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She randomly selects 150 pregnant mothers and finds that 2 of them smoked 21 or more cigarettes during pregnancy. Test th cance. se npo (1- Po) = a to one decimal place as needed.) 10, the normal model be used to approximate the P-value.

She randomly selects 150 pregnant mothers and finds that 2 of them smoked 21 or more cigarettes during pregnancy. Test th cance. se npo (1- Po) = a to one decimal place as needed.) 10, the normal model be used to approximate the P-value.

Mathematics For Machine Technology
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter23: Basic Calculations Of Percentages, Percents, And Rates
Section: Chapter Questions
Problem 14A
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Previously, 5% of mothers smoked more than 21 cigarettes during their pregnancy. An obstetrician believes that the percentage of mothers who smoke 21 cigarettes or more is less than 5% today. She randomly selects 150 pregnant mothers and finds that 2 of them smoked 21 or more cigarettes during pregnancy. Test the researcher's statement at the a = 0.05 level of significance. Because npo (1- Po) =L V 10, the normal model V be used to approximate the P-value. (Round to one decimal place as needed.)
Transcribed Image Text:Previously, 5% of mothers smoked more than 21 cigarettes during their pregnancy. An obstetrician believes that the percentage of mothers who smoke 21 cigarettes or more is less than 5% today. She randomly selects 150 pregnant mothers and finds that 2 of them smoked 21 or more cigarettes during pregnancy. Test the researcher's statement at the a = 0.05 level of significance. Because npo (1- Po) =L V 10, the normal model V be used to approximate the P-value. (Round to one decimal place as needed.)
Find the P-value. P-value = (Round to three decimal places as needed.)
Transcribed Image Text:Find the P-value. P-value = (Round to three decimal places as needed.)
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