1-/2.77 Points) DETAILS BBUNDERSTAT12 7.2.016, NOTES ASK YOUR TEAC Do you want to your own candyor? Wowl with me interest in running your own business centered, you can probably out bank loan onartup costs for such as Candy Thomps, and dy Mountain Chocolate Factory Startup costs in thousands of stars) for a random sample of candy stores web. Amma that the population of values has an emately normal die 15 104 110 100 (a) Une a calculator with mean and sample standard deviation keys to find the same dard deviation (und your store del pace) thousand dollars b) Find a confidence interval for the population were out for any reaches to your answers to decimal place) lower limit thousand dollars thousand dollars 27 -2.77 Points DETAS BSUNDERSTAT127.2022. I ? 625 14 14 0 1) L. 211 + 00 340 at Ce a decentrale upper the yers compare to the population O Player www. Puth as the yer is above average Paper Cover or approximal De were to me to previous parle According to the According to the M. According to According to the and are of the wore on Docence interval for you to deal place) upper Gavinterpretation of the meaning of the concerva you have found W15dent that the true proportion of judges who are in the above interval We are at the true properties who troverthin the interval www.cadent that the true proportion of where trovets Guide We are one that the true proportions where within the Do you think the con and are said this prop be an important conditions are noted. This important because Yes, the conditions are said. This is important cows approximately O the radio anted. This means th Yes, the conditions and this is important because it allows that are 2.77 Points) DETAILS BBUNDERSTAT127026 MYNOIS AS YOU TEACHER of this problem resto digits after the decat in your way around he National Council of Business interested in the proportion of Char 11 years may be there to state the proti romance e proportion of all business at dered Chapter 1 bankruptcy last year. (a) no preliminary sample is taken to how are a sample near to be sure that a point wc fpt Hound your wer up to the whole number) small business se trata peste () is a preliminary random sample of the sound that the show the from ? (Round your answer up to the man whole number more sms Briefly answer the following questions. (a) What is a null hypothesis Ho? O A working hypothesis making a claim about the population parameter in question. Any hypothesis that differs from the original claim being made. O A specific hypothesis where the claim is that the population parameter does not equal o. O A specific hypothesis where the claim is that the population parameter is equal to 0. (b) What is an alternate hypothesis H,? A specific hypothesis where the claim is that the population parameter does not equal o. Any hypothesis that differs from the original claim being made. O A specific hypothesis where the claim is that the population parameter is equal to 0. O A working hypothesis making a claim about the population parameter in question. (c) What is a type I error? Type I error is rejecting the null hypothesis when it is false. Type I error is failing to reject the null hypothesis when it is false. Type I error is rejecting the null hypothesis when it is true. O Type I error is failing to reject the null hypothesis when it is true. What is a type II error? Type II error is rejecting the null hypothesis when it is false. Type II error is failing to reject the null hypothesis when it is false. Type II error is rejecting the null hypothesis when it is true. Type II error is failing to reject the null hypothesis when it is true. (d) What is the level of significance of a test? O The probability of a type I error. The probability of a type II error. What is the probability of a type II error? 01-a OB O 1-8 31. (-/2.77 Points! DETAILS BBUNDERSTAT128.1.019. Lety be a random variable representing dividend yield of bank stocks. We may assume that has a normal dutrition with a random sample of 10 bank stocks are the following is in percent) 5.7 4.8 6.0 4.9 4.0 3.4 6.5 7.1 5.3 6.1 The sample mean is 5.3. Suppose that for the entire stock market, the mean dividend yield is 41. De these data indicate that the dividendid of bank teks is Nigher than 117Use a 0.01 (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? Mix 4.14 N: > 4.1%; tailed OH > 414 4.1%; right-tailed O MO - 4.1%; MIR 4.1%; two-tailed OH 4.1%; H 4.15;left talled (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution The standard normal, since we assume that has a normal distribution with known The standard normal, since we assume that has a normal distribution with unknown The Student'st, since we assume that has a normal distribution with known a The Student'st, since n is large with unknown Compute the value of the sample test statistic (Round your answer to two decimal places) (c) Find (or estimate the P-value. (Round your answer to four decimal places.) Sketch the sampling distribution and show the area corresponding to the P-value. 0- 3 At the sweet the land and the rest the 0.01 level we fail to reject the other Ce pour conclusion in the context of There is widence There indien de the code that 32. 1-/2.77 Points DETAILS BBUNDERSTATI2 1.024 Total blood one per body weight in a portant in medical research for the red seve Blood and thered Wood we were as follows 14 3110 be and table that represents hoger's red blood volume moral what is the level of cance! Rate the date potheeswigheted, or two-taldet? O Mole 28 mik: Mimo tailed OH = 25, 20 lilled OM! 278m/weled M2 / 2 9 b) whatsampling tribution will you use they The standardnem since we assume that aldi The Students since we sume that has a normal distribution to The student's since is large with one UTSTYCE W US TOTIVT OTTO WICT HOW The Student's t since n is large with unknown The standard normal, since we assume that has a normal distribution with known Compute the value of the sample test statistic (Round your answer to two decimal places.) (c) Find (or estimate the P-value. (Round your answer to four decimal places.) Sketch the sampling distribution and show the area corresponding to the P-value. P-value O-3 -2 -1 0 1 3 -1 1 0-3 2 P-value P-value -2 O-3 -1 1 0 2 3 3 O-3 -2 2 0 (d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level a? O At the a- 0.01 level, we reject the null hypothesis and conclude the data are statistically significant. O At the - 0.01 level, we reject the null hypothesis and conclude the data are not statistically significant O At the & -0.01 level, we fail to reject the null hypothesis and conclude the data are statistically significant. O At the a - 0.01 level, we fail to reject the null hypothesis and conclude the data are not statistically significant (e) State your conclusion in the context of the application. There is sufficient evidence at the 0.01 level to condude that Roger's average red cell volume differs from the average for healthy adults. is insufficient evidence at the 0.01 level to conclude that Roger's average red cell volume differs from the average for healthy adults. 1-/2.77 Points) DETAILS BBUNDERSTAT12 7.2.016, NOTES ASK YOUR TEAC Do you want to your own candyor? Wowl with me interest in running your own business centered, you can probably out bank loan onartup costs for such as Candy Thomps, and dy Mountain Chocolate Factory Startup costs in thousands of stars) for a random sample of candy stores web. Amma that the population of values has an emately normal die 15 104 110 100 (a) Une a calculator with mean and sample standard deviation keys to find the same dard deviation (und your store del pace) thousand dollars b) Find a confidence interval for the population were out for any reaches to your answers to decimal place) lower limit thousand dollars thousand dollars 27 -2.77 Points DETAS BSUNDERSTAT127.2022. I ? 625 14 14 0 1) L. 211 + 00 340 at Ce a decentrale upper the yers compare to the population O Player www. Puth as the yer is above average Paper Cover or approximal De were to me to previous parle According to the According to the M. According to According to the and are of the wore on Docence interval for you to deal place) upper Gavinterpretation of the meaning of the concerva you have found W15dent that the true proportion of judges who are in the above interval We are at the true properties who troverthin the interval www.cadent that the true proportion of where trovets Guide We are one that the true proportions where within the Do you think the con and are said this prop be an important conditions are noted. This important because Yes, the conditions are said. This is important cows approximately O the radio anted. This means th Yes, the conditions and this is important because it allows that are 2.77 Points) DETAILS BBUNDERSTAT127026 MYNOIS AS YOU TEACHER of this problem resto digits after the decat in your way around he National Council of Business interested in the proportion of Char 11 years may be there to state the proti romance e proportion of all business at dered Chapter 1 bankruptcy last year. (a) no preliminary sample is taken to how are a sample near to be sure that a point wc fpt Hound your wer up to the whole number) small business se trata peste () is a preliminary random sample of the sound that the show the from ? (Round your answer up to the man whole number more sms Briefly answer the following questions. (a) What is a null hypothesis Ho? O A working hypothesis making a claim about the population parameter in question. Any hypothesis that differs from the original claim being made. O A specific hypothesis where the claim is that the population parameter does not equal o. O A specific hypothesis where the claim is that the population parameter is equal to 0. (b) What is an alternate hypothesis H,? A specific hypothesis where the claim is that the population parameter does not equal o. Any hypothesis that differs from the original claim being made. O A specific hypothesis where the claim is that the population parameter is equal to 0. O A working hypothesis making a claim about the population parameter in question. (c) What is a type I error? Type I error is rejecting the null hypothesis when it is false. Type I error is failing to reject the null hypothesis when it is false. Type I error is rejecting the null hypothesis when it is true. O Type I error is failing to reject the null hypothesis when it is true. What is a type II error? Type II error is rejecting the null hypothesis when it is false. Type II error is failing to reject the null hypothesis when it is false. Type II error is rejecting the null hypothesis when it is true. Type II error is failing to reject the null hypothesis when it is true. (d) What is the level of significance of a test? O The probability of a type I error. The probability of a type II error. What is the probability of a type II error? 01-a OB O 1-8 31. (-/2.77 Points! DETAILS BBUNDERSTAT128.1.019. Lety be a random variable representing dividend yield of bank stocks. We may assume that has a normal dutrition with a random sample of 10 bank stocks are the following is in percent) 5.7 4.8 6.0 4.9 4.0 3.4 6.5 7.1 5.3 6.1 The sample mean is 5.3. Suppose that for the entire stock market, the mean dividend yield is 41. De these data indicate that the dividendid of bank teks is Nigher than 117Use a 0.01 (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? Mix 4.14 N: > 4.1%; tailed OH > 414 4.1%; right-tailed O MO - 4.1%; MIR 4.1%; two-tailed OH 4.1%; H 4.15;left talled (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution The standard normal, since we assume that has a normal distribution with known The standard normal, since we assume that has a normal distribution with unknown The Student'st, since we assume that has a normal distribution with known a The Student'st, since n is large with unknown Compute the value of the sample test statistic (Round your answer to two decimal places) (c) Find (or estimate the P-value. (Round your answer to four decimal places.) Sketch the sampling distribution and show the area corresponding to the P-value. 0- 3 At the sweet the land and the rest the 0.01 level we fail to reject the other Ce pour conclusion in the context of There is widence There indien de the code that 32. 1-/2.77 Points DETAILS BBUNDERSTATI2 1.024 Total blood one per body weight in a portant in medical research for the red seve Blood and thered Wood we were as follows 14 3110 be and table that represents hoger's red blood volume moral what is the level of cance! Rate the date potheeswigheted, or two-taldet? O Mole 28 mik: Mimo tailed OH = 25, 20 lilled OM! 278m/weled M2 / 2 9 b) whatsampling tribution will you use they The standardnem since we assume that aldi The Students since we sume that has a normal distribution to The student's since is large with one UTSTYCE W US TOTIVT OTTO WICT HOW The Student's t since n is large with unknown The standard normal, since we assume that has a normal distribution with known Compute the value of the sample test statistic (Round your answer to two decimal places.) (c) Find (or estimate the P-value. (Round your answer to four decimal places.) Sketch the sampling distribution and show the area corresponding to the P-value. P-value O-3 -2 -1 0 1 3 -1 1 0-3 2 P-value P-value -2 O-3 -1 1 0 2 3 3 O-3 -2 2 0 (d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level a? O At the a- 0.01 level, we reject the null hypothesis and conclude the data are statistically significant. O At the - 0.01 level, we reject the null hypothesis and conclude the data are not statistically significant O At the & -0.01 level, we fail to reject the null hypothesis and conclude the data are statistically significant. O At the a - 0.01 level, we fail to reject the null hypothesis and conclude the data are not statistically significant (e) State your conclusion in the context of the application. There is sufficient evidence at the 0.01 level to condude that Roger's average red cell volume differs from the average for healthy adults. is insufficient evidence at the 0.01 level to conclude that Roger's average red cell volume differs from the average for healthy adults