Chapter 8: Q.3 (page 477)
Which distribution should you use for this problem?
The distribution is.
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In one complete sentence, explain what the interval means.
Using the same mean, standard deviation, and sample size, how would the error bound change if the confidence level were reduced to 90%? Why?
The data in the Table are the result of a random survey of 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 the number of colors on a national flag.
Construct a confidence interval for the true mean number of colors on national flags.
Calculate the following:
a. lower limit
b. upper limit
c. error bound
Suppose we have data from a sample. The sample mean is , and the error bound for the mean is . What is the confidence interval estimate for the population mean?
Which distribution should you use for this problem?
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