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Confidence interval for the difference between the means of the two populations
Salary information for a random sample of male and female employees of a large company is shown below.
Male
Female
Sample Size
64
36
Sample Mean Salary (in $1,000)
44
41
Sample Variance
128
72
A) The point estimate of the difference between the means of the two populations is
B) The standard error for the difference between the two means is
C) The 95% confidence interval for the difference between the means of the two populations is
a. 0 to 6.92
b. -2 to 2
c. -1.96 to 1.96
d. -0.92 to 6.92
What statistical procedure was used to analyze data in study B?
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