Find the P-value. P-value = (Round to three decimal places as needed.)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Previously, 4% 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 4% today. She randomly selects 135 pregnant mothers and finds that 4 of them smoked 21 or more cigarettes during pregnancy. Test the
researcher's statement at the a = 0.1 level of significance.
What are the null and alternative hypotheses?
= 0.04 versus H1: p
< 0,04
Но: р
(Type integers or decimals. Do not round.)
Because npo (1- Po) = 5.2 < 10, the normal model may not 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:Previously, 4% 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 4% today. She randomly selects 135 pregnant mothers and finds that 4 of them smoked 21 or more cigarettes during pregnancy. Test the researcher's statement at the a = 0.1 level of significance. What are the null and alternative hypotheses? = 0.04 versus H1: p < 0,04 Но: р (Type integers or decimals. Do not round.) Because npo (1- Po) = 5.2 < 10, the normal model may not 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.)
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