Additional Information and Full Hypothesis Test Examples · Exercise 29

For each of the word problems, use a solution sheet to do the hypothesis test. The solution sheet is found in. Please feel free to make copies of the solution sheets. For the online version of the book, it is suggested that you copy the.doc or the.pdf files.

"The Problem with Angels," by Cyndy Dowling
Although this problem is wholly mine,
The catalyst came from the magazine, Time.
On the magazine cover I did find
The realm of angels tickling my mind.

Inside, 69% I found to be
In angels, Americans do believe.

Then, it was time to rise to the task,
Ninety-five high school and college students I did ask.
Viewing all as one group,
Random sampling to get the scoop.

So, I asked each to be true,
"Do you believe in angels?" Tell me, do!

Hypothesizing at the start,
Totally believing in my heart
That the proportion who said yes
Would be equal on this test.

Lo and behold, seventy-three did arrive,
Out of the sample of ninety-five.
Now your job has just begun,
Solve this problem and have some fun.

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Introductory Statistics 2e · §9.5 Additional Information and Full Hypothesis Test Examples · Exercise 29