# Question

According to Time magazine (December 5, 2011), 18% of adult Americans suffer from an anxiety disorder. Suppose a test of 300 random college students showed that 50 suffered from an anxiety disorder.

a. How many out of 300 would you expect to have an anxiety disorder if the 18% is correct?

b. Suppose you are testing the hypothesis that the population proportion of college students suffering from an anxiety disorder is not 0.18 at the 0.05 significance level. Choose the correct figure and interpret the p-value.

a. How many out of 300 would you expect to have an anxiety disorder if the 18% is correct?

b. Suppose you are testing the hypothesis that the population proportion of college students suffering from an anxiety disorder is not 0.18 at the 0.05 significance level. Choose the correct figure and interpret the p-value.

## Answer to relevant Questions

According to Time magazine (May 28, 2012), 33% of people in the United States have sleep-walked at least once in their lives. Suppose a random sample of 200 people showed that 42 reported sleepwalking. Carry out the first ...Historically, the percentage of U.S. residents who support stricter gun control laws has been 52%. A recent Gallup Poll of 1011 people showed 495 in favor of stricter gun control laws. Assume the poll was given to a random ...Samuel Morse determined that the percentage of a’s in the English language in the 1800s was 8%. A random sample of 600 letters from a current newspaper contained 60 a’s. Using the 0.10 level of significance, test the ...If we do not reject the null hypothesis, is it valid to say that we accept the null hypothesis? Why or why not? Refer to the study discussed in Exercise 8.69. The accompanying table shows the results of the study for different age groups. a. For each age group, find the percentage who were smiling. b. Treat this as a random sample of ...Post your question

0