A schoolteacher is worried that the concentration of dangerous, cancer-causing radon gas in her dassroom is greater than the safe level of 4pCi/L. The school samples the air for 36 days and finds an average concentration of 4.4pCi/L with a standard deviation of 1pCi/L. At a 5% significance level, the decision is to A. reject Ho; we can condlude that the mean concentration of radon gas is greater than the safe level B. reject Ho; we cannot condude that the mean concentration of radon gas is greater than the safe level C. not reject Ho; we can conclude that the mean concentration of radon gas is greater than the safe level D. not reject Ho; we cannot conclude that the mean concentration of radon gas is greater than the safe level
A schoolteacher is worried that the concentration of dangerous, cancer-causing radon gas in her dassroom is greater than the safe level of 4pCi/L. The school samples the air for 36 days and finds an average concentration of 4.4pCi/L with a standard deviation of 1pCi/L. At a 5% significance level, the decision is to A. reject Ho; we can condlude that the mean concentration of radon gas is greater than the safe level B. reject Ho; we cannot condude that the mean concentration of radon gas is greater than the safe level C. not reject Ho; we can conclude that the mean concentration of radon gas is greater than the safe level D. not reject Ho; we cannot conclude that the mean concentration of radon gas is greater than the safe level
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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