Answer the following questions:
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Claim: A minorlty oi adults would erase all of their personal information onllne it They could. Asoware rm survey of 642 randomly selected adults showed that 42% of them would erase all of their personal lniormation online if they could. Complete parts (a) and (b) below. a. Express the original clalm in symbolic torm. Let the parameter represent the adults that would erase their personal information Y Y (Type an integer or a decimal. Do not round.) b. Idenlity the null and alternative hypotheses HDVV H'VV (Type irllegers or decimals Do not round ) \fClaim: The standard deviation of pulse rates of adult males is less than 10 bpm. For a random sample of 134 adult males, the pulse rates have a standard deviation of 8.7 bpm. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. bpm (Type an integer or a decimal. Do not round.) b. Identify the null and alternative hypotheses. Ho: bpm H1 : bpm (Type integers or decimals. Do not round.)Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 581 randomly selected adults showed that 60% of them would erase all of their personal information online if they could. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)The test statistic of z = 2.22 is obtained when testing the claim that p > 0.3. a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. b. Find the P-value. c. Using a significance level of a = 0.10, should we reject Ho or should we fail to reject Ho? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. a. This is a test. b. P-value = (Round to three decimal places as needed.) c. Choose the correct conclusion below. O A. Reject Ho. There is sufficient evidence to support the claim that p > 0.3. O B. Fail to reject Ho. There is sufficient evidence to support the claim that p > 0.3. O C. Reject Ho. There is not sufficient evidence to support the claim that p > 0.3. O D. Fail to reject Ho. There is not sufficient evidence to support the claim that p > 0.3.In a certain survey. 523 people chose to respond to this question: "Should passwords be replaced with biometric security (ngerprints. etc)?" Among the respondents. 51% said "yes "We wantto test the claim that more than half of the population believes that passwords should be replaced with biometric security. Complete parts (a) through (d) below. a. Are any of the three requirements violated? Can a test about a population proportion using the normal approximation method be used? 0 A. The sample observations are not a random sample, so a tem about a population proportion using the normal approximating method cannot be used. 0 B. All of the conditions for testing a daim about a population proportion using the normal approximation method are satised, so the method can be used 0 C. The conditions up 2 5 and no 2 5 are not satisfied, so a test about a population proportion using the normal approximation method cannot be used. 0 D. One of the conditions for a binomial distribution are not satised. so a test about a population proportion using the normal approximating method cannot be used. b. It was mated that we can easily remember how to interpret Pavalucs with this: tthe P is low, the null must go." What does this mean? 0 A. This statement means that ii the Pavalue is very low. the alternative hypothesis should be rejected 0 B. This statement means that ii the Pavalue is very low. the null hypothesis should be rejected. 0 C. This statement means that ii the Pavalue is very low. the null hypothesis should be accepted. 0 D. This statement means that ii the Pavalue is not very low, the null hypothesis should be rejected c. Another memory trick commonly used i5 this: "If the P is high. the null will y." Given that a hypothais test never results in a conclusion of proving or supporting a null hypothesis. how is this memory trick misleading? O A. This statement seems to suggest that with a low Pvalue. the null hypothesis has been proven or is supported but this conclusion cannot be made. 0 B. This statement seems to suggest that with a high Pvalue' the null hypothesis has been proven or is supported. but this conclusion cannot. be made 0 C. This statement seems to suggest that with a high Pavalue' the alternative hypothesis has been rejected, but this conclusion cannot be made. 0 D. This statement seems to suggest that with a high Psvalue' the alternative hypothesis has been proven or is supported. but this conclusion cannot be made. d. Common signicance levels are 0 Di and l] 05 Why would it be unwise to use a signicance level with a number like 0 0483'? O A. Choosing a more specic signicance level will make it more difcult to reject the null hypothesis. 0 B. Signicance levels must always end in a 1 or a 5 O C. Asignicance level with more lhan 2 decimal places has no meaning. 0 D. Choosing this specic of a signicance level could give the impression that the sign'riicance level was chosen specically to reach a desired conclusion. \fDecide whether to reject the null hypothesis. Choose the correct answer below. O A. Reject the null hypothesis because the P-value is greater than the significance level, a. O B. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a. O C. Reject the null hypothesis because the P-value is less than or equal to the significance level, a. O D. Fail to reject the null hypothesis because the P-value is greater than the significance level, a. e. What is the final conclusion? O A. There is sufficient evidence to warrant rejection of the claim that less than 12% of treated subjects experienced headaches. O B. There is sufficient evidence to support the claim that less than 12% of treated subjects experienced headaches. O C. There is not sufficient evidence to warrant rejection of the claim that less than 12% of treated subjects experienced headaches. O D. There is not sufficient evidence to support the claim that less than 12% of treated subjects experienced headaches.d. What is the null hypothesis, and what do you conclude about it? Identify the null hypothesis. O A. Ho: p = 0.12 O B. Ho : p# 0.12 O C. Ho: p >0.12 O D. Ho: p 0.93 O C. Ho: p = 0.93 O D. Ho: p#0.93Choose the correct answer below. O A. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a. O B. Reject the null hypothesis because the P-value is greater than the significance level, o. O C. Reject the null hypothesis because the P-value is less than or equal to the significance level, a. O D. Fail to reject the null hypothesis because the P-value is greater than the significance level, a. e. What is the final conclusion? O A. There is sufficient evidence to support the claim that 93% of adults own a cell phone. O B. There is sufficient evidence to warrant rejection of the claim that 93% of adults own a cell phone. O C. There is not sufficient evidence to support the claim that 93% of adults own a cell phone. O D. There is not sufficient evidence to warrant rejection of the claim that 93% of adults own a cell phone
