Question

In: Statistics and Probability

1. A survey of 436 workers showed that 192 of them said that it was seriously...

1. A survey of 436 workers showed that 192 of them said that it was seriously unethical for employers to monitor employee emails without their knowledge. When a random sample of 121 senior-level executives were surveyed, 40% of them agreed with the employees, Use a 5% significance level to test the claim that the proportion of employees that feel that monitoring employee emails is seriously unethical is greater than the proportion of executives that share this view.

a. What is the point estimate for the population proportions?

b. Whatistheteststatistic?

c. Set up the “Ho” and “Ha” statements.

d. Draw the bell curve; find the critical values.

e. What is your conclusion? Explain.

2. Using the data from #1, and a 90% confidence level

a. What is the maximum error?

b. What is the point estimate?

c. Construct the 90% confidence interval for the difference between the population proportions.

Solutions

Expert Solution


Related Solutions

A survey of 460 workers showed that 154 said it was unethical to monitor employee e-mail....
A survey of 460 workers showed that 154 said it was unethical to monitor employee e-mail. When 130 senior-level bosses were surveyed, 4848 said it was unethical to monitor employee e-mail. At the 1 % significance level, do the data provide sufficient evidence to conclude that the proportion of workers that say monitoring employee e-mail is unethical is lessless than the proportion of bosses? Use the two-proportions z-test to conduct the required hypothesis test. Let population 1 be workers, and...
A survey of 410 workers showed that 172 said it was unethical to monitor employee e-mail....
A survey of 410 workers showed that 172 said it was unethical to monitor employee e-mail. When 135 senior-level bosses were surveyed, 37 said it was unethical to monitor employee e-mail. At the 1% significance level, do the data provide sufficient evidence to conclude that the proportion of workers that say monitoring employee e-mail is unethical is greater than the proportion of bosses? What is the Parameter of interest? What is the underlying Distribution?
A survey of 300 office-based workers asked whether they accessed Facebook during working hours. 192 of...
A survey of 300 office-based workers asked whether they accessed Facebook during working hours. 192 of the workers said that they did not access Facebook. a. Construct a 90% confidence interval of the proportion of office workers who do use Facebook. b. Interpret the confidence interval. c. If it is known that 30% of all office workers accessed Facebook during working hours last year, at the 1% level test whether there has been a significant change in the proportion of...
In a survey of 500 U.S. adults, 45% of them said that lounging at the beach...
In a survey of 500 U.S. adults, 45% of them said that lounging at the beach was their “dream vacation.’ Assuming this to be a simple random sample of U.S. adults, the lower confidence limit of the 95% confidence intervals for the proportion of U.S. adults who consider lounging at the beach to be their dream vacation would equal to;
A recent survey of 1000 adults between 18 and 40 showed that 34% said they had...
A recent survey of 1000 adults between 18 and 40 showed that 34% said they had no credit cards. Find the 99% confidence interval for the population proportion.
In a random survey of 2221 adults aged 18 and older 689 of them said that...
In a random survey of 2221 adults aged 18 and older 689 of them said that football is their favorite sport to watch on television. Construct a 94% Confidence Interval for the true proportion of adults aged 18 and older for whom football is their favorite sport to watch on television. A (.2909, .3295) B (.2918, .3287) C (.3185. .3401) D (.3102, .3214)
A) In​ 1997, a survey of 820 households showed that 137 of them use​ e-mail. Use...
A) In​ 1997, a survey of 820 households showed that 137 of them use​ e-mail. Use those sample results to test the claim that more than​ 15% of households use​ e-mail. Use a 0.05 significance level. Use this information to answer the following questions. What is the​ P-value? B) In a study of 420,149 cell phone​ users, 115 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that such cancers are affected...
In a recent survey of 4276 randomly selected households showed that 3549 of them had telephones....
In a recent survey of 4276 randomly selected households showed that 3549 of them had telephones. Using these results, construct a 99% confidence interval estimate of the true proportion of households with telephones. Use the PANIC acronym
In a survey, among 350 randomly selected single women, 77 of them said that they "definitely...
In a survey, among 350 randomly selected single women, 77 of them said that they "definitely want to get married." In the same survey, among 400 randomly selected single men, 112 of them gave that same response. Assume that these samples are independent. Use a 0.01 signifficant level and the P-value method to test the claim that the proportion of single women who definitely want to get married is less than the one of single men who definitely want to...
In? 1997, a survey of 840 households showed that 147 of them use? e-mail. Use those...
In? 1997, a survey of 840 households showed that 147 of them use? e-mail. Use those sample results to test the claim that more than? 15% of households use? e-mail. Use a 0.05 significance level. Use this information to answer the following questions. a. Which of the following is the hypothesis test to be? conducted? b. What is the test? statistic? c. What is the? P-value? d. What is the? conclusion? There is not sufficient evidence to support the claim...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT