A research company desires to know the main consumption of meat per week among males over 43. They believe that the meat consumption has a mean of 3.2 pounds and want to construct a 99% confidence interval with a maximum error of 0.09 pounds. Assuming a standard deviation of 1.3 pounds what is the minimum number of males over age 43 they must include in their sample round your answer up to the next integer

Some college graduates employed full-time work more than 40 hours per week, and some work fewer than 40 hours per week. We suspect that the mean number of hours worked per week by college graduates, µ, is less than 40 hours and wish to do a statistical test. We select a random sample of college graduates employed full-time and find that the mean of the sample is 37 hours and that the standard deviation is 3 hours. Based on this information, answer the questions below. What are the null hypothesis (H,) and the alternative hypothesis (H ,) that should be used for the test? H:u is 7 In the context of this test, what is a Type I error? АТурe I error is 7 fact, u is 7 | the hypothesis that µ is ? when, in Suppose that we decide not to reject the null hypothesis. What sort of error might we be making? ?

A research company desires to know the mean consumption of meat per week among males over age 43. They believe that the meat consumption has a mean of 3.2 pounds, and want to construct a 99% confidence interval with a maximum error of 0.09 pounds. Assuming a standard deviation of 1.3 pounds, what is the minimum number of males over age 43 they must include in their sample? Round your answer up to the next integer.

Sam is the manager of a used clothing store.  He wants to estimate the average amount a customer spends per visit.  A random sample of 70 customers’ receipts gave a mean of = $7.10 with a standard deviation s = $2.30.  Find a 99% confidence interval for the average amount spent by all customers. Interpret your findings.

In a random sample of 2500 men being treated for obesity, the mean total cholesterol level is 175 with a standard deviation of 25.       Construct a 95% confidence interval around the mean and interpret it. Use the context of the question please.

Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 41 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 5.1 and a standard deviation of 1.2. What is the 98% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Enter your answers accurate to one decimal place (because the sample statistics are reported accurate to one decimal place). < μμ <

Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 79 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 12.1 and a standard deviation of 1.4. What is the 95% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Enter your answers accurate to one decimal place (because the sample statistics are reported accurate to one decimal place). <μ<

A random sample of 64 shoppers showed that they spend an average of $27.31 per visit at the Sunday Mornings Bookstore. The standard deviation of the population is $2.14. Find the 90% confidence interval of the true mean. Please include all work showing how you found your answer.

Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 63 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 9 and a standard deviation of 2. What is the 95% confidence interval for the number of chocolate chips per cookie for Big Chip cookies?

A recent survey of 25 students showed that they spent an average of $18.53 on petrol eachweek. The standard deviation of the sample was $3.00. Find the 99% confidence intervalfor the true mean (average over all students).