a. according to the irs individuals filling federal income tax returns pror to march 31 received an average refund of $1,078 in 2018. consider the population of last- minutes files who mail their tax return during the last five days of income tax period (typically april 10 to april 15) b.for a sample of 400 individuals who filed a tax return between april 10 and 15 the sample mean fefund was $920 based on prior experience a population standard devition 1,800 what is p-value? c.using a= 0.05 can you conclude that population mean refund for last minutes filiters is less than the population mean refund for early filers?
a. according to the irs individuals filling federal income tax returns pror to march 31 received an average refund of $1,078 in 2018. consider the population of last- minutes files who mail their tax return during the last five days of income tax period (typically april 10 to april 15) b.for a sample of 400 individuals who filed a tax return between april 10 and 15 the sample mean fefund was $920 based on prior experience a population standard devition 1,800 what is p-value? c.using a= 0.05 can you conclude that population mean refund for last minutes filiters is less than the population mean refund for early filers?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 1GP
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a. according to the irs individuals filling federal income tax returns pror to march 31 received an average refund of $1,078 in 2018. consider the population of last- minutes files who mail their tax return during the last five days of income tax period (typically april 10 to april 15)
b.for a sample of 400 individuals who filed a tax return between april 10 and 15 the sample
c.using a= 0.05 can you conclude that population mean refund for last minutes filiters is less than the population mean refund for early filers?
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