8% or the proportion of 8 out of 100 are brown). ( 8 points) The data set below contains data from a simple random sample of 100 M&Ms, 8 of which are brown (i.e.
“Reject the Null Hypothesis” or “Fail to Reject the Null Hypothesis)? Why?ģ. ( 1 point) What is the result of the hypothesis test (i.e. ( 1 point) What is the area of the critical region? ( 1 point) What is the value of the test statistic? ( 1 point) Is this a two-tailed, left-tailed, or right-tailed test? Why?Į. ( 1 point) What is the sampling distribution of the sample statistic?ĭ. ( 1 point) Identify the null and alternative hypothesis.Ĭ. Assume that the data consists of 55 girls born in 100 births, so the sample statistic of 0.55 results in a z-score that is 1.00 standard deviation above 0.Ī. ( 10 points) A 0.05 significance level is used for a hypothesis test of the claim that when parents use the XSORT method of gender selection, the proportion of baby girls is different from 0.5. ( 1 point) Identify the null and alternative hypothesis.Ģ. ( 1 point) Express the original claim in symbolic form.ī. The latest results show that among 945 babies born to couples using the XSORT method of gender selection, 879 were girls.Ī. ( 2 points) A claim is made that when parents use the XSORT method of gender selection during in-vitro fertilization, the proportion of baby girls is greater than 0.5. Homework #5: Lesson 8, Sections 1-5 through Lesson 9, Sections 1-2ġ.
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