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Body mass index (BMI) is a measure of the body fat based on height and weight. According to the document Dietary Guidelines for Americans, published by the U.S Department of Agriculture and the U.S Department of Health and Human Services, for adults, a BMI of greater than 25 indicates an above healthy weight(i.e., over-weight or obese). Of 750 randomly selected adults whose highest degree is bachelors, 386 have an above healthy weight; and of 500 randomly selected adults with a graduate degree, 237 have an above healthy weight.
(a). Find a 90% confidence interval for the difference interval for the difference of P1-P2 between the proportion of bachelor's degree holders and graduate degree holders.
(b). Find a 95% confidence interval for the difference interval for the difference of P1-P2 between the proportion of bachelors degree holders and graduate degree holders
(c). With reference to part (a) and part (b) which of them gives the best precision and why your choice between them.
When we take the sample of 100 of these average is $500 and SD is $100. (a) Determine statement to make about range $300 to $700?
Overall, the amount of work-hours involved in the festival preperation is normally distributed around 100 hours withn a standard deviation of 12 hours.
a computer system allows user ids that are three four or five characters long. repeated characters are allowed. the
How much difference does the choice of model make? Which forecasts do you trust the most, and why? (f) If you have access to Ward's Automotive Yearbook, check your forecasts.
What is the formula is for a population with a mean of u=60 and a standard deviation of sigma=24. Find the z score corresponding to the sample m=63 for a sample of n =16 scores,.
Found the sample mean to be 7.8 with a standard deviation of 1.8. Can you infer that in fact students watch less than 7 hours per week?
potholes occur on a major citys streets at a rate of 4.2 per mile. what is the probability that a quarter-mile stretch
Critically discuss the main differences between descriptive and inferential statistics? Provide an example of either type of statistics either from a recent study you heard about or a made up study you'd be interested in learning about.
Use the Standing data set to develop a point estimate of the number of minutes during an NFL game that players are standing around between plays. Round your answer to two decimal places. What is the sample standard deviation? Round your answer to ..
a dividend is a payment from a publicly traded company to its shareholders. the dividend yield of a stock is determined
a study concluded that among people with a certain virus 99.4 were tested correctly positive while people without the
This result prompts a test administrator to claim that standard deviation for eighth graders on examination is less than 29.At a = 0.10, is there sufficient evidence to support administrator's claim?
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