Quiz: Ch 12 Quiz: ChiSquare Procedure This quiz: 10 point(s) possible Question 9 of 10 This question: 1 point(s) possible Submit quiz According to a census company, T 1% of all babies bom 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 240 births for which the mother was 35 to 39 years old and found 26 low-birth-weight babies. Complete parts (a) through (c) below. (a) Ifthe proportion of low-birth-weight babies for mothers in this age group is 0.071 , compute the expected number of low-birth-weight births to 35- to 39-year-old mothers. What is the expected number of births to mothers 35 to 39 years old that are not low birth weight? The expected number of low-birth-weight births to 35- to 39-year-old mothers is The expected number of births to mothers 35 to 39 years old that are not low birth weight is (Type integers or decimals.) (b) Answer the obstetrician's question at the a = 0.06 level of significance using the chi-square goodness-of-fit test. State the null and altemative hypotheses for this test. 0_071 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.) State a conclusion for this test in the context of the obstetrician's question. Choose the correct answer below C) A. Reject the null hypothesis. There is not suffcient evidence to conclude that mothers between the ages of 3S and 39 years give birth to a higher percentage of low-birth-weight babies at the cr=0.05 level of significance. C) B. Do not reject the null hypothesis There is not 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=0.0S level of significance. C) C. Reject the null hypothesis. There is suffcient evidence to conclude that mothers between the ages of 3S and 39 years give birth to a higher percentage of low-birth-weight babies at the cr=0.05 level of significance. C) D. Do not 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=0.0S level of significance. (c) Answer the obstetrician's question at the (1 = 0.06 of significance using a z-test for a population proportion. State the null and alternative hypotheses for this test 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.) State a conclusion for this test in the context of the obstetrician's question. Choose the correct answer below Reject the null hypothesis. There is suffcient evidence to conclude that mothers between the ages of 3S and 39 years give birth to a higher percentage of low-birth-weight babies at the cr = 0.05 level of significance. Do not 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 = 0.06 level of significance. Do not reject the null hypothesis There is not 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 = 0.06 level of significance. Reject the null hypothesis. There is not suffcient evidence to conclude that mothers between the ages of 3S and 39 years give birth to a higher percentage of low-birth-weight babies at the cr = 0.05 level of significance.