_____ 45. Interpret the confidence interval (7.569, 9.325) for another sample fr

Question

_____ 45. Interpret the confidence interval (7.569, 9.325) for another sample from Blue Stem
Orchards, a neighboring orchard.
a. 95% of all oranges from Blue Stem Orchards weigh between 7.569 ounces and
9.325 ounces.
b. I am 95% confident that the mean weight of an orange from Blue Stem Orchards
this season is between 7.569 ounces and 9.325 ounces.
c. I am 95% confident that a randomly selected orange from Blue Stem Orchards this
season is between 7.569 ounces and 9.325 ounces.
d. 95% of all samples from Blue Stem Orchards will have mean weight between 7.569
ounces and 9.325 ounces.

_____ 46. The distribution of salaries of television news broadcasters is skewed to the right. Which
is true according to the Central Limit Theorem?
a. The distribution of all the salaries of the broadcasters can be described by a Normal
model.
b. The spread of the sampling distribution of sample means would be smaller for small
samples than for larger samples.
c. The sampling distribution of means for large random samples of these salaries can
be approximated by a Normal model.
d. The standard deviation of the sampling distribution of means for large random
samples of these salaries is equal to
ˆˆpq
n
.

Explanation / Answer

45)

We are 95% confident that the mean weight of an orange from blue stem orchards this season is between 7.569 tob9.325

46)

The spread of the sampling distribution of sample means would be smaller for small samples than for larger samples.

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