The Gallup Organization® classifies Americans as very religious if they say religion is an important part of their daily lives and that they attend religious services every week or al-most every week. In 2013, 175 thousand American adults were surveyed about whether they are very religious. A histogram of the percentages of those surveyed who are very religious is shown in Fig. 88 for the 50 states.

a. Describe the shape of the distribution.
b. Estimate the number of states where at least 50% of those surveyed are very religious.
c. Mississippi and Utah have the highest percentage of those surveyed who say they are very religious. Estimate the percentage for each of those two states.
d. Identify the class that contains the 50th percentile, which is a measure of the center. Are the observations in the class typical values? Explain.
e. Why might your result from part (d) be a poor measurement of the center of the distribution for all residents in the United States. What type of bias in sampling is that?

Transcribed Image Text:

Very Religious, by State 10 4 2 20 25 30 35 40 45 50 55 60 65 Percent