1. Starting salaries of a sample of five management majors along with their gend
ID: 3311546 • Letter: 1
Question
1. Starting salaries of a sample of five management majors along with their genders are shown beloW Emplovee Gender Salary ($1000s 30 28 4 26 19 A. What is the point estimate for the starting salaries of all management majors? B. Determine the point estimate for the variance of the population C. Determine the point estimate for the proportion of male employees Consider a population of five weights identical in appearance but weighing 1, 3, 5, 7, and 9 ounces A. Determine the mean and the variance of the population B. Sampling without replacement from the above population with a sample size of 2 produces 2. ten possible samples. Using the ten sample mean values, determine the mean of the population and the variance ofX C. Compute the standard error of the mean The average weekly earnings of bus drivers in a city are $950 (that is deviation of $45 (that is ). Assume that we select a random sample of 81 bus drivers A. Assume the number of bus drivers in the city is large compared to the sample size. Compute 3. with a standard the standard error of the mean What is the probability that the sample mean will be greater than $960? If the population of bus drivers consisted of 400 drivers, what would be the standard error of the mean? B. C. percent of the items produced by a machine are defective. A random sample of 100 items is selected and checked for defects 4. A. B. C. Determine the standard error of the proportion what is the probability that the sample will contain more than 2.5% defective units? what is the probability that the sample will contain more than 13% defective units?Explanation / Answer
(1)
(a) what is the point estimate for the starting salaries of all management majors?
Sol:P^=125/5
=25(thousands)
the point estimate for the starting salaries of all management majors is 25(thousands)
(b) Determine the point estimate the variance of the population
Sol:20(thousand)
(c) Determine the point estimate for the proportion of male employees
Sol:= 28+19/125
=0.4
the point estimate for the proportion of male employees is 0.4
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