3. A fitness center claims that its members lose an average of 12 pounds or more the first month after joining the center. An independent agency that wanted to check this claim took a sample of 45 members and found that they lost an average of 10 pounds within the first month with standard deviation of 3 pounds. Find the p-value for this test. What will your decision be if a =0.05?

A sandwich shop claims to sell subsandwiches that are 12 inches lona. An employee is alittle suspicious about this claim So over the course of the next week, he measures 45sandwiches at random. The mean and standard deviation for the 45 sandwiches is 12 18 inches

The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances that someone is earning more than $20 an hour?

You are performing a study about weekly per capita milk consumption. A previous study found weekly per capita milk consumption to be normally​ distributed, with a mean of 43.9 fluid ounces and a standard deviation of 10.8 fluid ounces. You randomly sample 30 people and record the weekly milk consumptions shown below. 34, 53, 30, 37, 39, 45, 27, 62, 33, 45, 41, 24, 37, 53, 40, 39, 39, 45, 46, 45, 33, 30, 21, 39, 61, 41, 47, 39, 53, 34 ​a) Using seven classes, draw a frequency histogram to display these data.  b) Find the mean of your sample. Find the standard deviation of your sample. c) Compare the mean and standard deviation of your sample with those of the previous study. Discuss the differences.