men Poo l #1 Pool #2 Pol # 3 Sunscreen 8. 13 wearers non Sunscreen wearers 31 27 19 Women Pool #1 Pool # 2 Pool #3 Sunscrcen 23 39 13 wearers non Sunscreen wearers 17 2. Claim: women are more likely to wear SPF than men. I went to three different pools over the course of one week and aSKed men and women if they were wearing Sun screen and the se were the results I got. Identify the null and altcrnative hypothesis. Find the test Statistic using the 2-distribuition formula Zニ • identify the p-value Spă + P ē Calculate 3 interpret the Confidence interval Con Clude reject or fail to reject the null hyPothesis * use o.05 % levei 6ff Significance

) For each problem below, Decide whether it describes a confidence interval for a proportion or a confidence interval for a mean. Apply the correct formula to calculate the confidence interval in the format of an estimate + margin of error. During the 2016 season, Mark Williams played in 18 golf matches and used his driver club 126 times, hitting his drives an average of 278 yards per drive, with a standard deviation of 15 yards per drive. Calculate a 95% confidence interval for the distance he was able to hit his driver club in that season.

A magazine publisher wishes to determine what proportion of current subscribes will renew. The publisher selects a random sample of 200 subscribers and finds that 108 plan to renew. Assume you have the 99% confidence interval for this. Interpert the confidence interval

If we increase our sample size the width of the confidence interval will

2

Use the given confidence interval to find the margin of error and the sample mean.   ​(12.6​,22.0​) The sample mean is   ​(Type an integer or a​ decimal.)

Find the critical value for a 98% confidence interval. Then calculate the interval.

Use the given confidence interval to find the margin of error and the sample mean. (6.05,10.81) The sample mean is (Type an integer or a decimal.) The margin of error is. (Type an integer or a decimal.)

What is a confidence interval

What does a confidence interval for m indicate? When do we compute a confidence interval?