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Chapter 8: Q.8.6 (page 455)
Suppose we know that a confidence interval is (). Find the error bound and the sample mean.
The error bound and the sample mean are:
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During the 2013 regular NBA season, DeAndre Jordan of the Los Angeles Clippers had the highest field goal completion rate in the league. DeAndre scored with 61.3% of his shots. Suppose you choose a random sample of 80 shots made by DeAndre during the 2013 season. Let X = the number of shots that scored points.
a. What is the probability distribution for X?
b. Using the formulas, calculate the (i) mean and (ii) standard deviation of X.
c. Use your calculator to find the probability that DeAndre scored with 60 of these shots.
d. Find the probability that DeAndre scored with more than 50 of these shots
Which distribution should you use for this problem?
In words, define the random variables and .
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.
Calculate the following:
(a)
(b)
(c)
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.
What is estimating?
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