2 pts Question 7 Jeffrey, as an eight year old, established amean time of 16.53 seconds for swimming the 25-yard freestyle, with a standard deviation of 0.7 seconds. His dad, Frank, thought that Jeffrey could swim the 25-yard freestyle faster using gopgles. Frank bought Jeffrey a new pair of expensive goggles and timed Jeffreyfor 20 25-yard freestyle swims. For the 20 swims, Jeffrey's mean time was 16.2 seconds. Frank thought that the goggles helped Jeffrey to swim faster than the 16.53 seconds. Conduct a hypothesis test using a preset a-0.05. Assume that the swim times for the 25-yard freestyle are normal. This from the example Ch9 pg 514 use zTest Wk7Hw_1smplhi OAt the 5% significance level, we cannot reject the null hypotheses that the samplemean is not statistically ditferent to 16.53 OAt the 5% significance level, we can reject the null hypotheses that the sample mean is not statistically different to 16.53 and conclude that there is surficlent evidence that Jeffrey's mean time with the goggles is less than 16.53 seconds. Ouetien