I really need help with question 3 and 4. Thanks!

A.Perform hypothesis testing withfor each of the four hypothesis statements: alpha = 0.05

1.Mean sales per week exceed 42.5 per salesperson:

2.Proportion receiving online training is less than 55%:.To find p-hat, the sample proportion, you need to count how many of online, then divide it by the total.

3.Mean calls made among those with no training is at least 145:

4.Mean time per call is 14.7 minutes:.This is a two-tailed test here, you need to split thein half for each side of the curve.

Sample Calls mean = 158.44, sample standard deviation = 19.28, n= 100

Sample Time mean = 15.23, sample standard deviation = 2.61, n = 100