Refer to the accompanying data set of mean​ drive-through service times at dinner in seconds at two fast food restaurants. Construct a   90​% confidence interval estimate of the mean​ drive-through service time for Restaurant X at​ dinner; then do the same for Restaurant Y. Compare the results. LOADING... Click the icon to view the data on​ drive-through service times. Construct a   90​% confidence interval of the mean​ drive-through service times at dinner for Restaurant X

Treating the 2015 Tobacco rate data as a sample, construct a 95% confidence interval for the mean tobacco rate for males and for females. Interpret each interval. Does it appear that males use tobacco at a higher rate than females? Justify your answer, using the confidence intervals in your explanation. Construct the same confidence interval for males at the 99% confidence level. Compare to the male 95% confidence interval from the previous question. What happened to the interval when the confidence level increased? Explain why. Prevalence of smoking any tobacco product among persons aged >= 15 years Male 2015 Prevalence of smoking any tobacco product among persons aged >= 15 years Female 2015 51.2 7.6     37.2 27.8         29.5 18.4 52.3 1.5 16.7 13.1 35.5 34.8 46.5 0.4     48.8 7.6 39.8 0.7 13.1 0.9 46.2 10.6 26.5 20     17.7 1     30.5 17.1 47.2 30     19.3 11.3 29.3 3.1 42.4 28.2 36 4.5         22.2 3.5 44.1 2.8…

A survey was conducted that asked 1016 people how many books they had read in the past year. Results indicated that x=12.5 books and s=16.6 books. Construct a 99​% confidence interval for the mean number of books people read. Interpret the interval.   LOADING... Click the icon to view the table of critical​ t-values. Construct a 99​% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice. ​(Use ascending order. Round to two decimal places as​ needed.)   A. If repeated samples are​ taken, 99​% of them will have a sample mean between nothingand   nothing.   B. There is 99​% confidence that the population mean number of books read is between   nothing and   nothing.   C. There is a 99​% probability that the true mean number of books read is between   nothing and   nothing.   Pick answer and fill in blank pls

mean. Interpret the results and compare the widths of the confidence intervals. If​ convenient, use technology to construct the confidence intervals.   A random sample of 40 home theater systems has a mean price of ​$138.00. Assume the population standard deviation is ​$17.80. Construct a​ 90% confidence interval for the population mean.