Cookie calories. Lets say that the mean calories in a commercially - produced cookie is said to be 115 calories .To test this claim you randomly sampled 20 cookie brands at the local grocery store and found that the mean is 112 calories per cookie with a standard deviation of 8

1. What is the Parameter?
2. What are the sample statistics?
3. State then null and alternate hypotheses (equations and sentences)
4. What is the critical z values for 95%level of significance
5. Calculate the Zobs (hypothesis test of significance) show all your work.
6. Determine the P-value
7. Do you accept null hypothesis or reject null hypothesis and accept the alternative hypothesis.(draw the normal curve)