An experiment was conducted to determine whether giving

Last updated: 1/6/2023

An experiment was conducted to determine whether giving candy to dining parties resulted in greater tips The mean tip percentages and standard deviations are given in the accompanying table along with the sample sizes Assume that the two samples are independent simple random samples selected from normally distributed populations and do not assume that the population standard deviations are equal Complete parts a and b State the conclusion for the test No candy H Two candies H2 40 21 15 2 34 n 40 X S 18 33 1 47 A Reject the null hypothesis There is sufficient evidence to support the claim that giving candy does result in greater tips OB Fail to reject the null hypothesis There is sufficient evidence to support the claim that giving candy does result in greater tips b Construct the confidence interval suitable for testing the claim in part a H H Round to two decimal places as needed n 4 OC Reject the null hypothesis There is not sufficient evidence to support the claim that giving candy does result in greater tips OD Fail to reject the null hypothesis There is not sufficient evidence to support the claim that giving candy does result in greater tips