you would like to know how long american scuba-divers can stay underwater. you heard that the average number of minutes american scuba-divers can dive without coming to the surface equals 65 minutes. you do not believe that is true and decide to conduct a test. your null hypothesis is that the population mean equals 65. your alternative hypothesis is that the population mean differs from 65. you question 40 randomly selected american scuba-divers and discover that they can stay underwater for only 64 minutes. the standard deviation is 5 minutes. assume a = significance level = 0.05. (a) find test statistic. (b) do you reject your null hypothesis? (c) interpret your results
you would like to know how long american scuba-divers can stay underwater. you heard that the average number of minutes american scuba-divers can dive without coming to the surface equals 65 minutes. you do not believe that is true and decide to conduct a test. your null hypothesis is that the population mean equals 65. your alternative hypothesis is that the population mean differs from 65. you question 40 randomly selected american scuba-divers and discover that they can stay underwater for only 64 minutes. the standard deviation is 5 minutes. assume a = significance level = 0.05. (a) find test statistic. (b) do you reject your null hypothesis? (c) interpret your results
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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you would like to know how long american scuba-divers can stay underwater. you heard that the average number of minutes american scuba-divers can dive without coming to the surface equals 65 minutes. you do not believe that is true and decide to conduct a test. your null hypothesis is that the population mean equals 65. your alternative hypothesis is that the population mean differs from 65. you question 40 randomly selected american scuba-divers and discover that they can stay underwater for only 64 minutes. the standard deviation is 5 minutes. assume a = significance level = 0.05. (a) find test statistic. (b) do you reject your null hypothesis? (c) interpret your results
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