Question: Is there sufficient evidence to conclude that American families with
Is there sufficient evidence to conclude that American families with children have on average less than two children (CHILDS)?
Answer to relevant QuestionsEstimate with 95% confidence the average amount of television watched per day (TVHOURS).Estimate with 95% confidence the average American total family annual income (TFINCOME).a. The sample variance of a random sample of 50 observations from a normal population was found to be s2 = 80. Can we infer at the 1% significance level that σ2 is less than 100?b. Repeat part (a) increasing the sample size ...The job placement service at a university observed the not unexpected result of the variance in marks and work experience of the university’s graduates: Some graduates received numerous offers whereas others received far ...Suppose that you used the sample size calculated in Exercise 12.89 and found p̂ = .5.a. Estimate the population proportion with 90% confidence.b. Is this the result you expected? Explain.c. If you were hired to conduct this ...
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