Mathematics, 23.04.2021 22:30, kidus24
In order to determine whether or not there is a significant difference between the hourly wages of two companies, the following data have been accumulated.
Company A Company B
Sample size 48 64
Sample mean $16.75 $16.20
Population standard deviation $1.20 $0.80
To perform a test of hypothesis to see whether or not there is a significant difference between the hourly wages of companies A and B, the problem should be formulated as a one-tailed test (lower-tail). What is the 95% confidence interval estimate of the difference between the population means for the two populations?
Answers: 2
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