Data from the Center for Disease Control estimates that abou…
Data from the Center for Disease Control estimates that about 20% (0.2) of incoming freshman at American universities were overweight in 2008. A professor in public health at a major university wants to determine at a 1% significance level whether the proportion has changed since 2008. He samples 100 randomly selected incoming freshman at universities around the country. Using the body mass index (BMI) measurements, he finds that 30 were overweight. Select the correct options. Note: Failure to select correct options or selecting incorrect ones will deduct points.
Read DetailsYou have calculated a 99% confidence interval for the mean n…
You have calculated a 99% confidence interval for the mean number of hours volunteers work each week for a large charity. For each adjustment described below, if all else stayed the same, do your best match whether the confidence interval would become wider, narrower, or neither one.
Read DetailsThe following two questions on this exam (#21 and #22) relat…
The following two questions on this exam (#21 and #22) relate to Project Management (#21) and Inventory Management (#22). Please only respond to ONE of these two questions, answering all parts of the question. You will only be graded on the Project Management question (#21) if both questions are answered. Choose just one of the two. Total points will be 16 points for the one question you answer. Please select which of the two questions you will respond to:
Read DetailsThere are one hundred towns in a state, and each contains ex…
There are one hundred towns in a state, and each contains exactly one thousand citizens. A statistician in the state chooses a town at random and takes all its citizens as their sample. Is this a simple random sample from the population of citizens in the state?
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