0 Question 7 B 011 pt '0 3 8 98 G Details Testing: Hoip = 0.52 H12? 7/5 0.52 Your sample consists of 146 subjects, with 73 successes. Calculate the test statistic, rounded to 2 decimal places Question Help: Q Written Example Submit Question 0 Question 8 B 0.2/1 pt '0 0-3 :3 99 6) Details Score on last try: 0.2 of 1 pts. See Details for more. 23 Get a similar question You can retry this question below You wish to test the following claim (Ha) at a significance level of a = 0.005. Ho:p = 0.76 Hagp > 0.76 You obtain a sample of size n = 533 in which there are 421 successful observations. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = C] What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = C] 0 Question 9 B 0/1 pt '0 3 8 99 (9 Details Test the claim that the proportion of people who own cats is smaller than 70% at the 0.10 significance level. The null and alternative hypothesis would be: H02=p 0.7Ho2=p 07 H0 [107 H0 \"=07 H0:p=07 Ho:[.=0.7 H:.:.:.ap707Hap>07Hap707Ha: u0.7 O O O O O O The test is: left-tailed two-tailed right-tailed O O 0 Based on a sample of 500 people, 64% owned cats The test statistic is: :] (to 2 decimals) The p-value is: :] (to 2 decimals) Based on this we: 0 Fail to reject the null hypothesis 0 Reject the null hypothesis 0 Question 11 IE 0/1 pt '0 3 8 99 6) Details You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly more than 0.76. Thus you are performing a right-tailed test. Your sample data produce the test statistic z = 2.573. Find the p-value accurate to 4 decimal places. Question Help: Q Written Example Submit Question 0 Question 12 IE 011 pt '0 3 8 99 6) Details You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly more than 22%. With HA : p > 22% you obtain a test statistic of z = 1.186. Find the p-value accurate to 4 decimal places. Question Help: Q Written Example Submit Question 0 Question 13 B 0.2/1 pt '0 3 8 97 (9 Details You are conducting a study to see if the probability of catching the flu this year is significantly more than 0.54. You use a significance level of a = 0.002. H011) = 0.54 H1:p > 0.54 You obtain a sample of size n = 520 in which there are 311 successes. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = C] What is the p-value for this sample? (Report answer accurate to four decimal places.) The p-value is... 0 less than (or equal to) a O greater than a This test statistic leads to a decision to... O reject the null O accept the null O fail to reject the null As such, the final conclusion is that... 0 There is sufficient evidence to warrant rejection of the claim that the probability of catching the flu this year is more than 0.54. 0 There is not sufficient evidence to warrant rejection of the claim that the probability of catching the flu this year is more than 0.54. O The sample data support the claim that the probability of catching the flu this year is more than 0.54. 0 There is not sufficient sample evidence to support the claim that the probability of catching the flu this year is more than 0.54. Question 14 0/1 pt 9 3 2 99 0 Details Test the claim that the proportion of people who own cats is significantly different than 90% at the 0.01 significance level. The null and alternative hypothesis would be: Ho:p = 0.9 Ho:u = 0.9 Ho:p = 0.9 Ho:p = 0.9 Ho : M = 0.9 Ho:M = 0.9 H1 :p > 0.9 H1 :u > 0.9 Hi :p / 0.9 H1 :p 0.46 Calculate the test statistic, rounded to 3 decimal places 2 = :i Submit Question 0 Question 18 B 0/1 pt '0 3 23 99 (D Details According to a University Center for Logistics Management, 11% of all merchandise sold in the United States gets returned. A Seattle department store sampled 88 items sold in January and found that 8 of the items were returned. If you have the following null and alternative hypotheses for a test you are running: Hozp = 0.11 Ha:p7': 0.11 Calculate the test statistic, rounded to 3 decimal places 2' = :] Submit Question Question 19 0.4/1 pt 9 3 98 0 Details A well-known brokerage firm executive claimed that 30% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample of 600 people, 21% of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is smaller than 30% at the 0. 10 significance level. The null and alternative hypothesis would be: Ho:u =0.3 Ho:p =0.3 Ho:u =0.3 Ho:p = 0.3 Ho:p = 0.3 Ho: M = 0.3 Hi:u + 0.3 H1 :p> 0.3 Hi:u 0.3 The test is: two-tailed right-tailed left-tailed The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals) Based on this we: O Reject the null hypothesis O Fail to reject the null hypothesis0 Question 20 B 0.3/1 pt '01-3 2:3 98 (D Details Score on last try: 0.3 of 1 pts. See Details for more. 8 Get a similar question You can retry this question below Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day. A sample of 70 stocks traded on the NYSE that day showed that 33 went up. You are conducting a study to see if the proportion of stocks that went up is significantly more than 0.3. You use a significance level of a = 0.001. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = C] What is the p-value for this sample? (Report answer accurate to four decimal places.)