18 4 In the US adult male heights are normally distributed w

1-8

4. In the US, adult male heights are normally distributed with mean 70 inches and standard deviation 2.5 inches. James is a professional basketball player and his height is in the 98th percentile. Which of the following is his height to the nearest inch? A) 80 inches B) 73 inches C) 75 inches D) 82 inches 5. The proportion of registered voters that voted in the recent election was 55%. If samples of n = 200 registered voters are taken, what is the standard deviation of the sampling distribution of the sample proportion? A) 0.55 B) 3.89 C) 0.0 35 D) 0.00 1 6. Which of the following could be a null hypothesis for a hypothesis test of a mean? A) Mu = 41 B) x= 34.5 C) Mu > 76 D) x

Solution

1 C

2.D

3. B

4. C

5.C

6. A (bottom of CI should be 292, not 92)

7 A

8. A