Concept explainers
In your opinion, how safe is the food you buy? CBS News polled 1048 U.S. adults and asked them the question below.
Overall, how confident are you that the food you buy is safe to eat: very confident, somewhat confident, not too confident, not at all confident?
The pie chart shows the responses to the question. You conduct a survey using the same question. The
How Confident Are You That the Food You But is Safe to Eat?
Gender | ||
Response | Female | Male |
Very confident | 96 | 160 |
Somewhat confident | 232 | 180 |
Not too confident | 56 | 52 |
Not at all confident | 12 | 4 |
In Exercises 4 and 5, perform a chi-square goodness-of fit test to compare the distribution of responses shown in the pie chart with the distribution of your survey results for each gender. Use the distribution shown in the pie chart as the expected distribution. Use α = 0.05.
14. Compare the distribution of responses by females with the expected distribution. What can you conclude?
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Check out a sample textbook solutionChapter 10 Solutions
Elementary Statistics: Picturing the World (6th Edition)
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