Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

As seen in the previous test, the average income of DBA graduates who did well i

ID: 3357199 • Letter: A

Question

As seen in the previous test, the average income of DBA graduates who did well in econometrics is US$961,000 per year. A recent study has shown that the mean income of DBA students who focus on other subjects in their studies (leadership, finance etc) and neglect econometrics, is TT $36,000 per year, and the standard deviation of annual incomes for this group is TT$480. Find the mean and standard deviation of the sampling distribution of the mean income for a random sample of 144 DBA graduates who neglected econometrics

Explanation / Answer

= 36000

= 480

n = 144

Mean of sampling distribution = = 36000

standard deviation of the sampling distribution = /sqrt(n) = 480 / sqrt(144) = 40

Related Questions

As purchasing agent for Woolsey Enterprises in Golden, Colorado, you ask your bu
Question #419258
As quality control chief for Blotto Brewery, Inc., you wish to determine the ave
Question #3355193
As real GDP falls, A. money demand falls, so the interest rate falls. B. money d
Question #1215872
As reported by a recent survey, the mean height of females 20 to 29 years old is
Question #3201875
As reported by a recent survey, the mean height of females 20 to 29 years old is
Question #3277127
As reported by a recent survey, the mean height of females 20 to 29 years old is
Question #3303742
As reported by a recent survey, the mean height of females 20 to 29 years old is
Question #3311626
As reported by the College Entrance Examination Board the score on the scholasti
Question #3200317

Navigate

Previous
As seen in the figure, a thin horizontal bar AB of negligible weight and length
Next
As seen in this recent XKCD strip and this recent blog post from Peter Norvig (a

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.