Chapter 11.1, Problem 13E

For Exercises 5 through 18, perform these steps.

a. State the hypotheses and identify the claim.

b. Find the critical value.

c. Compute the test value.

d. Make the decision.

e. Summarize the results.

13. Firearms Deaths According to the National Safety Council, 10% of the annual deaths from firearms were victims from birth through 19 years of age. Half of the deaths from firearms were victims aged 20 through 44 years, and 40% of victims were aged 45 years and over. A random sample of 100 deaths by firearms in a particular state indicated the following: 13 were victims from birth through 19 years, 62 were aged 20 through 44 years, and the rest were 45 years old and older. At the 0.05 level of significance, are the results different from those cited by the National Safety Council?

Source: World Almanac.