We are interested in assessing the number of ropes a person can jump rope. We have a random sample of 38 people and find that the average person can jump rope 6.9 times with a standard deviation of...

Extracted text: We are interested in assessing the number of ropes a person can jump rope. We have a random sample of 38 people and find that the average person can jump rope 6.9 times with a standard deviation of 2.3. What is the 95% confidence interval for the actiial averae number of ropes a person can jump? Enter your answers accurate to one decimal place. Can we conclude that the actual average number of ropes a person can jump is at most 7.6? Beyond representative sampling, what assumptions are needed to satisfy the requirements for this confidence interval? X ~ normal and n > 30 X ~ normal or n > 30 X ~ binomial, np > 5 and nq > 5 X ~ binomial and at least 5 successes and failures