Use the following information to answer the next 13 exercises: The data In Table 8.10 are the result of a random survey of 39 national flags (with replacement between picks) from various countries. We are interested in finding a confidence interval for the true mean number of colors on a national flag. Let X = the number of colors on a national flag.
X | Freq. |
1 | 1 |
2 | 7 |
3 | 18 |
4 | 7 |
5 | 6 |
Table 8.10
Construct a 95% confidence interval for the true mean number of colors on national flags.
How much area is in both tails (combined)?
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