Question

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.

Answer #1

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p̂?
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20 women and 30 men between 18 to 60 years old and the
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20 women work hours weekly = 40, 24, 30, 31, 19, 10, 21,
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