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9 Sep 2020
1. a) Other things being equal, as the confidence level for a
confidence interval increases, the width of the interval
Increases, Decreases, Stays the same, or none of the above.
b) The ________________ confidence interval, the more useful
information it gives us.
Wider, narrower, neither.
c) The midpoint of the confidence interval for the proportion
is
population proportion, sample proportion, a confidence level,
none of the above.
d) What does the confidence interval for the mean depend on?
sample, mean, standard deviation, sample size, confidence level.
Can be more than one.
1. a) Other things being equal, as the confidence level for a
confidence interval increases, the width of the interval
Increases, Decreases, Stays the same, or none of the above.
b) The ________________ confidence interval, the more useful
information it gives us.
Wider, narrower, neither.
c) The midpoint of the confidence interval for the proportion
is
population proportion, sample proportion, a confidence level,
none of the above.
d) What does the confidence interval for the mean depend on?
sample, mean, standard deviation, sample size, confidence level.
Can be more than one.
15 Jun 2022
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Related questions
Choose the best answer.
Suppose you collect a sample that has a mean of 37 with a 99% confidence interval of [32,42], and you are interested in the hypothesis test below at the α=0.05 level.
| H0: μ=43 |
| Ha: μ≠43 |
a) You should ask for more information because the sample size and standard deviation are needed for a hypothesis test of this kind.
b) You should fail to reject the null hypothesis because the p-value is greater than 0.05.
c) You should ask for more information because the confidence interval does not match the αα level.
d) You should reject the null hypothesis because the p-value is less than 0.05.
