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According to a census company, 7.1% of all babies born are of low birth weight. An obstetrician wanted to know whether mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies. She randomly selected 280 births for which the mother was 35 to 39 years old and found 30 low-birth-weight babies. Complete parts (a) through (c) below. D. Reject the null hypothesis. There is sufficient evidence to conclude that mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies at the a= 0.05 level of significance. (c) Answer the obstetrician's question at the a= 0.05 level of significance using a z-test for a population proportion. State the null and alternative hypotheses for this test. Ho: p 0.071 H: p 0.071 Use technology to compute the P-value for this test. Use the Tech Help button for further assistance. P-value = (Round to three decimal places as needed.)

According to a census company, 7.1% of all babies born are of low birth weight. An obstetrician wanted to know whether mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies. She randomly selected 280 births for which the mother was 35 to 39 years old and found 30 low-birth-weight babies. Complete parts (a) through (c) below. D. Reject the null hypothesis. There is sufficient evidence to conclude that mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies at the a= 0.05 level of significance. (c) Answer the obstetrician's question at the a= 0.05 level of significance using a z-test for a population proportion. State the null and alternative hypotheses for this test. Ho: p 0.071 H: p 0.071 Use technology to compute the P-value for this test. Use the Tech Help button for further assistance. P-value = (Round to three decimal places as needed.)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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
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According to a census company, 7.1% of all babies born are of low birth weight. An obstetrician wanted to know whether mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies. She randomly selected 280 births for which the mother was 35 to 39 years old and found 30 low-birth-weight babies. Complete parts (a) through (c) below. D. Reject the null hypothesis. There is sufficient evidence to conclude that mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies at the a= 0.05 level of significance. (c) Answer the obstetrician's question at the a= 0.05 level of significance using a z-test for a population proportion. State the null and alternative hypotheses for this test. Ho: p = 0.071 %D H1: p > 0.071 Use technology to compute the P-value for this test. Use the Tech Help button for further assistance. P-value =D (Round to three decimal places as needed.)
Transcribed Image Text:According to a census company, 7.1% of all babies born are of low birth weight. An obstetrician wanted to know whether mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies. She randomly selected 280 births for which the mother was 35 to 39 years old and found 30 low-birth-weight babies. Complete parts (a) through (c) below. D. Reject the null hypothesis. There is sufficient evidence to conclude that mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies at the a= 0.05 level of significance. (c) Answer the obstetrician's question at the a= 0.05 level of significance using a z-test for a population proportion. State the null and alternative hypotheses for this test. Ho: p = 0.071 %D H1: p > 0.071 Use technology to compute the P-value for this test. Use the Tech Help button for further assistance. P-value =D (Round to three decimal places as needed.)
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