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 1 company 2 n1 = 80 n2 = 60 xì„1 = $10.80 xì„2 = $10.00 ïƒ1 = $2.00 ïƒ2 = $1.50 refer to exhibit 10-13. the point estimate of the difference between the means (company 1 – company 2) is

a. 8
b. –20
c. 50
d. 20

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000