# According to a census, 7.1% of all babies born are of low birth weight. An obstetrician...

###### Question:

according to a census, 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 yesrs 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 28 low- birth - weight babies complete parts a-c
(a) If the proportion of low bwh weight babies for mothers in this age group is 0.071.compute the expected number of low birth weight births to 35-40 39-year-old mothers. What is the expected number of birth to mothers 35 to 39 years old that are not low bith weight? The expected number of our bith weight bittes to 35-16 39 year old mothers is The expected number of birth to mothers 35 to 39 years old that are not low birth weight is (Type integers or decimals) Answer the chutian's question at the 2016 kvel el significance using the chi square goodness of the State the null and alumnative hypotheses for this tout Hy 10071 WOT Use technology to complete for this test Use the Tech button for further (Round to be decimal places as needed)
State a conclusion for this test in the context of the obstetrician's question. Choose the correct answer below O A 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=0.10 level of significance OB. Do not reject the mul hypothesis. There is not suficient evidence to condude that mothers between the ages of 35 and 39 years give birth to a higher percentage of low birth weight babies at the a = 0.10 level of significance OC. Reject the ruil hypothesis. There is not sufficient evidence to conclude that mothers between the ages od 35 and 39 years give bath to a higher percentage of low birth weight babies at the a 0.10 level of significance OD. Do not reject the null hypothesis. There is sufficient evidence to condude that mothers between the age of 35 and 39 years give birth to a higher percentage of low-bit) Weight babies at the 0.10 level of significance te) Answer the obstetrician's question at the 0.10 level of significance using a test for a population proportion State the nail and alternative hypotheses for this test Ho 0071 H, Use technology to compute the value for this test Use the Tech Help button for further assistance P.valuecond to three decimal places as needed) 10.071
State a conclusion for this test in the context of the obstetrician's question. Choose the correct answer below. OA Do not reject the null hypothesis. There is not sufficient evidence to conclude that mothers between the age of 36 and 39 years give birth to a higher percentage of low-birth weight babies at the = 0.10 level of significance OB. Reject the null hypothesis. There is sufficient evidence to conclude that mothers between the age of 35 and 39 years give birth to a higher percentage of low-birth-weight babies at the e=0.10 level of significance OC. Do not reject the null hypothesis. There is sufficient evidence to condude that mothers between the age of 35 and 39 years give birth to a higher percentage of low-birth-weight babies at the a=0 10 level of significance OD. Reject the mall 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 - 0.10 level of significance Click to select your answers)

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