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e) Question 11Your answer is CORRECT.A random sample of 100 observations produced a sample proportion of 0.4. An approximate 95% confidenceinterval for the population proportion pis betweena) 0.276 and 0.524b) 0.304 and 0.496c) 0.319 and 0.481d) 0.351 and 0.449e) 0.304 and 0.481Question 12Your answer is CORRECT.Data for gas mileage (in mpg) for different vehicles was entered into a software package and part of the ANOVAtable is shown below: Source DF SS Vehicle 6 440 220.00 Error7 210 30.00 Total13 650 Determine the p-value for the data. MS Question 13Your answer is CORRECT.If the P-value is larger than the level of significance α, then the researcher should __________ at level α.00
12/15/2017Print Test6/80Question 14Your answer is CORRECT.The one-sample t statistic for a test of H0: μ = 12 vs. Ha: μ < 12 based on n= 19 observations has the test statisticvalue of t= −1.65. What is the p-value for this test?Question 15Your answer is CORRECT.This is a written question, worth 10 points. DO NOT place the problem code on the answer sheet. Aproctor will fill this out after exam submission. Show all steps (work) on your answer sheet for full credit.Problem Code: 1583A study of iron deficiency in infants compared samples of infants whose mothers chose different ways of feedingthem. One group contained breast-fed infants. The children in another group were fed a standard baby formulawithout any iron supplements. Her are summary results on blood hemoglobin levels at 12 months of age:GroupnxsBreast-fed 25 15.4 Formula32 17.1 1.9 Part a: We want to see if the mean hemoglobin level is greater among formula-fed babies. State the hypothesesand perform the significance test on your hypothesis. Report the test statistic and p-value. State your conclusionin terms of the issue.Part b: Give a 95% confidence interval for the mean difference in hemoglobin level between the two populationsof infants. 2.2 a) I have placed my work and my answer on my answer sheet.b) I want to have points deducted from my test for not working this problem.