A random sample of 40 adult males was taken, and their red blood cell counts were measured million cells per microliter). The mean was 4.932, with a standard deviation of .504.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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12. A random sample of 40 adult males was taken, and their red blood cell counts were measured
(in million cells per microliter). The mean was 4.932, with a standard deviation of .504.
a.) At a = .05, is there enough evidence to show that the true mean red blood cell count in the
population differs from 5 (million cells per microliter)? Please fill in the steps on the answer
sheet.
Please fill in the steps on the answer sheet.
b.) Calculate a 99% confidence interval for the true mean red blood cell count, and interpret your
answer. Please fill in on the answer sheet.
Transcribed Image Text:12. A random sample of 40 adult males was taken, and their red blood cell counts were measured (in million cells per microliter). The mean was 4.932, with a standard deviation of .504. a.) At a = .05, is there enough evidence to show that the true mean red blood cell count in the population differs from 5 (million cells per microliter)? Please fill in the steps on the answer sheet. Please fill in the steps on the answer sheet. b.) Calculate a 99% confidence interval for the true mean red blood cell count, and interpret your answer. Please fill in on the answer sheet.
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