Question

explain the process thank you

13) 13) A study was conducted to determine lf the salaries of librarians hom two neighboring cities were equal. A sample of 15 lbrarians from each clty was randomly selected. The mean from the first clty was $28,900 wlth a standard devlation of $2300. The mean from the second city was $30,300 witha standard deviation of$2100. Construct a 95% conndence Interval for μ1- A) (-2054, 238) B) (-4081, 597) C) (-3125, 325) D) (-2871, 567) 14) The weight lost over a 12-month period was measured for participants of 3 different weight loss14 programs. An F test indicated that the program means differed and a 95% confidence interval for H3-H1 was found to be (3202, 43.90) where 1 represents the population average weight loss under program 1 and y3 the population average weight loss under program 3. Interpret this interval. A) We are 95% confident that the average weight loss for program 3 is between 32.02 and 43.9 pounds more than for program 1 B) We are 95% confident that the average weight loss for program 1 is between 32.02 and 43.9 pounds more than for program 3. cy The probablity that a person loses between 3202 and 43.9 pounds more on program 3 than on program 1 is 0.95 D) H3 -H1 Is between 32.02 and 43.90 E) The probability that 3-in is between 32.02 and 43.90 is 95%

Answer 1

사。. m-2 toy Sp R202 271555 nlt"--L 2.0484] : -3047.24613, 241.2 403