1) Explain what is the difference between a point estimate and confidence Interval, Provide examples

Q: Generally speaking, what is the difference between a confidence interval and a prediction

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Q: margin of error for a 95% confidence interval is approximately 2 times the standard error.  True…

A: The standard error can be calculated as: SE=σnorSE=sn Here, σ  or s = Standard deviation n = Sample…

Q: "Calculating a confidence interval provides you with an indication of how reliable your sample mean…

A: The degree of confidence is the likelihood that the confidence interval will include the true mean…

Q: Explain when you would use the z value or the t-value to calculate a confidence interval

A: Z value: The z value is used for finding the confidence intervals for single population proportion,…

Q: Student 1 Student 2 Student 3 Student 4 Student 5 Student 6 Student 7 Student 8 Student 9 Height…

A: Given α=0.05nH=9nW=9 Define: X¯H=mean height of the sample of students X¯W=mean weight of the…

Q: how you recognize when an inferential statistics problem involves either a confidence interval…

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Q: What are two ways to get a narrower confidence interval for a proportion?

A: Two ways to get a narrower confidence interval for a proportion are:

Q: We wish to estimate what percent of adult residents in Ventura County like chocolate. Out of 400…

A: Sample size, n=400 No. of adults who like chocolate, x=315 CL=0.90

Q: The 95% confidence interval for the mean contains the sample mean with 95% certainty.TrueFalse

A: The confidence interval provides us a different range at different levels of significance. Since,…

Q: Pulse Rates Refer to Data Set 1 “Body Data” and construct a 95% confidence interval estimate of the…

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