Question

1 (rport What are the critical values 2 30? and 2 that correspond to a 99% confidence level and a sample size of 13.121, 52.336 O13.787,53.672 O14.257,49.588 O 19.768, 39.087 2. A simple random sample of 8 reaction times of NASCAR drivers is selected. The reaction times have a(4 point) normal distribution. The sample mean is 1.24 sec with a standard deviation of 0.12 sec. Construct a 99% confidence interval for the population standard deviation. O 0.20 < σ < 0.92 O0.73<0<3.30 0 0.08-o-o.22 0 0.07 Ơ < 0.32 3. 83 random samples were selected from a normally distributed population and were found to have a (point) mean of 32.1 and a standard deviation of 2.4. Construct a 90% confidence interval for the population standard deviation. 2.2 《 σ < 2.8 28.8 < σ < 37.4 4. The values listed are waiting times tin minutes) of customers at the Jefferson Bank, where customers poin enter a single waiting line that feeds three teller windows. Find the critical values zł and z corresponding to a 95e6 confidence level. 6.5 6.6 6.7 6.8 7.1 7.3 74 7.7 7.7 7.7 3.325, 16.919 2.700, 19.023 3.247, 20.483 1.237, 14449

Answer 1

My dear student you posted multiple questions as per HOMEWORKLIB RULES I have solved the first three questions.thank you.please like it.