1. We want to see if there is a difference in the average delivery time of two local pizza restaurants. To check this, we ordered pizza 6 different times from both restaurants, controlling for time of...

1. We want to see if there is a difference in the average delivery time of two local pizza restaurants. To check this, we ordered pizza 6 different times from both restaurants, controlling for time of day, weather, and traffic. The average delivery time for pizza place A was 29.1 minutes with a standard deviation of 1 minute, and for place B it was 26.5 minutes with a standard deviation of 1.2 minutes.
a) Estimate the difference in delivery times with a 95% confidence interval. Round to 4 decimal
places.
b) Write a real world interpretation of this problem.
2. Suppose Netflix conducts a nation-wide survey to assess viewer habits regarding the show Ozark. Using a simple random sample, they select 8,000 men and 6,500 women to participate in the study. 7,102 of the men say that they watch Ozark, compared to 4,817 of the women.
a)  Estimate the difference in viewing habits of Ozark using a 95% confidence interval.
b)  Write a real world interpretation of this problem.