Question 21 0 / 6 pts A manager believes that the average delivery time exceeds 30 minutes. The manager has randomly selected 19 customers and delivered to their homes with the mean of 33 minutes and standard deviation of 5.8 minutes. Given that a=0.05. What is the correct conclusion? O There is not sufficient evidence to indicate that the average delivery time exceeds 30 minutes. Correct Answer O There is sufficient evidence to indicate that the average delivery time exceeds 30 minutes. You Answered O There is sufficient evidence to indicate that the average delivery time differs from 30 minutes. O There is not sufficient evidence to indicate that the average delivery time differs from 30 minutes.Question 28 0 / 7 pts A researcher claims that a person uses less than 65 tissues during a cold. Suppose a sample of 50 people was selected with a mean of 60 tissues and standard deviation of 16 tissues during a cold. Given that a=0.05. Is there sufficient evidence to indicate that a person uses less than 65 tissues during a cold? You Answered O No Correct Answer O YesQuestion 30 0 / 7 pts There is a claim that the average weight of 10-years-old girls is different from 70.5 lb. A sample of 20 10-years-old girls were selected with the mean 68.4 lb and standard deviation of 4.8 lb. Given that o=0.10. What is the the correct conclusion? You Answered O There is not sufficient evidence to indicate that the average weight of 10-years- old girls is different from 70.5 lb. O There is not sufficient evidence to indicate that the average weight of 10-years- old girls is lower than 70.5 lb. Correct Answer O There is sufficient evidence to indicate that the average weight of 10-years-old girls is different from 70.5 lb. O There is sufficient evidence to indicate that the average weight of 10-years-old girls is lower than 70.5 lb.Question 31 0 I 7 pts There is a claim that the average weight of 10-years-old girls is different from 70.5 lb. A sample of 20 10-years-0Id girls were selected with the mean 68.4 lb and standard deviation of 4.8 lb. Given that a=0.10. What is the test statistic? Correct Answer 49 6 .)'_-_