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A Pew poll taken in 2010 surveyed 830 people aged 18-29 and found that 166 of...

A Pew poll taken in 2010 surveyed 830 people aged 18-29 and found that 166 of them had
one or more tattoos. Can you conclude that the percentage of people aged 18-29 who have a
tattoo is less than 25%?

a) What is the sample proportion?

b) Find the standard error.

c) Write the Hypothesis Test.

d) What kind of test?

e) Draw the bell curve relative to H 0 .

f) Find the z score for the answer you found in part (a).

g) Draw the p-value region on the standard bell curve.

h) Calculate the p-value.

i) What is the result using α = .01?
j) Describe in words the result of your study.

Math   Statistics-And-Probability   
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