Independent random samples were selected from two quantitative populations, with sample sizes, means, and standard deviations given below. n1 = n2 = 80, x1 = 125.3, x2 = 123.6, s1 = 5.7, s2 = 6.7
Construct a 95% confidence interval for the difference in the population means (μ1 − μ2). (Round your answers to two decimal places.)
Find a point estimate for the difference in the population means.
Calculate the margin of error. (Round your answer to two decimal places.)
The statistical software output for this problem is:
95% confidence interval will be:
Point estimate = Sample diff = 1.7
Margin of error = (3.64 + 0.24)/2 = 1.94
Get Answers For Free
Most questions answered within 1 hours.