Question
In: Statistics and Probability
A student researcher compares the heights of American students and non-American students from the student body...
A student researcher compares the heights of American students and non-American students from the student body of a certain college in order to estimate the difference in their mean heights. A random sample of 17 American students had a mean height of 70 inches with a standard deviation of 1.73 inches. A random sample of 12 non-American students had a mean height of 66 inches with a standard deviation of 2.23 inches. Determine the 90% confidence interval for the true mean difference between the mean height of the American students and the mean height of the non-American students. Assume that the population variances are equal and that the two populations are normally distributed.
Step 1 of 3: Find the point estimate that should be used in constructing the confidence interval.
Step 2 of 3: Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places.
Step 3 of 3: Construct the 90% confidence interval. Round your answers to two decimal places.
Solutions
orchestra answered 2 years agoRelated Solutions
A student researcher compares the heights of American students and non-American students from the student body...
A student researcher compares the heights of American students
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college in order to estimate the difference in their mean heights.
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Determine the 90%90% confidence interval for the true...
A student researcher compares the heights of American students and non-American students from the student body...
A student researcher compares the heights of American students
and non-American students from the student body of a certain
college in order to estimate the difference in their mean heights.
A random sample of 12 American students had a mean height of 67.7
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A student researcher compares the heights of American students and non-American students from the student body...
A student researcher compares the heights of American students
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college in order to estimate the difference in their mean heights.
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A student researcher compares the heights of American students and non-american students from the student body...
A student researcher compares the heights of American
students and non-american students from the student body of a
certain college in order to estimate the difference in their mean
heights. A random sample of 18 American students had a mean height
of 70 inches with a standard deviation of 3.03 inches. A
random
sample of 12 non-american students had a mean height of 66.1 inches
with a standard deviation of 2.35 inches. Determine the 99%
confidence interval for the true...
A student researcher compares the heights of American students and non-American students from the student body...
A student researcher compares the heights of American students
and non-American students from the student body of a certain
college in order to estimate the difference in their mean heights.
A random sample of 17 American students had a mean height of 70.8
inches with a standard deviation of 1.99 inches. A random sample of
12 non-American students had a mean height of 63.3 inches with a
standard deviation of 2.63 inches. Determine the 90% confidence
interval for the true...
A student researcher compares the heights of American students and non-American students from the student body...
A student researcher compares the heights of American students
and non-American students from the student body of a certain
college in order to estimate the difference in their mean heights.
A random sample of 17 American students had a mean height of 70
inches with a standard deviation of 2.87 inches. A random sample of
12 non-American students had a mean height of 65.1 inches with a
standard deviation of 2.68 inches. Determine the 90% confidence
interval for the true...
A student researcher compares the heights of men and women from the student body of a...
A student researcher compares the heights of men and women from
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difference in their mean heights. A random sample of 10 men had a
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confidence interval for the true mean difference between the...
A student researcher compares the heights of men and women from the student body of a...
A student researcher compares the heights of men and women from
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difference in their mean heights. A random sample of 18 men had a
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Assume that the population standard deviation for cars owned by
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cars owned by faculty is 2.46 years. Determine the...
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