ALL ABOUT STATS

You are testing whether students at your school are overweight. You sample 25 students and measure how much more they weigh than the average weight for their height. The mean of your sample is 5 Ibs with a standard deviation of 3 Ibs. Find the following: 1. 90% confidence interval and interpret the result 2. 95% confidence interval and interpret the result 3. 99% confidence interval and interpret the resultA new sneaker claims that it can make male athletes jump higher. A sample of 25 male athletes is asked to jump once with their own sneakers on and once wearing the new sneakers. The average jump increased by 1.5 inches with the new sneakers with a standard deviation of 1 inch. Find the following: 1. 90% confidence interval and interpret the result 2. 95% confidence interval and interpret the result 3. 99% confidence interval and interpret the result