Calculate an estimate for p find an exact 90 ci for p find

Reference no: EM13604265

1. A random survey of airline passengers were asked if they had ever flown before. Their responses were as follows: Y Y N Y N Y Y N Y Y N N Y Y Y Y Y N (12 "Y" and 6 "N")

Let p represent the truth proportion of all airline passengers that are first time flyers.

a. Calculate an estimate for "p"

b. Find an exact 90% CI for "p"

c. Find a large sample approximate 90% CI for "p". Is this CI Valid? Explain.

**Note: (c) asks you to use the Wilson Score C.I. formula. Round to 4 decimal places when necessary.

d. Which of the CI's above do you feel is more credible? Explain

Reference no: EM13604265

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