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Average heart rate for Americans is 72 beats/minute. A group of 18 individuals participated in an aerobics fitness program at American Kickboxing of New York to lower their heart rate. After six months, there was evaluation conducted on the group to identify if the program had significantly slowed their heart. The mean heart rate for the group was 69 beats/minute with a standard deviation of 6.5. You need to construct a 95% confidence interval for the mean of all such heart rate levels to determine if the aerobics program was effective in lowering heart rate. What is the margin of error?
we draw a ball from a bag that contains four red balls and eleven white balls. we replace the ball and draw another
What are the advantages and disadvantages of using figures, tables, and text to report the results of experiments in the research report?
ten trials are conducted in a bernoulli process in which the probability of success in a given trial is 0.3. if x
How many Kleenex should the Kimberly Clark Corporation package of tissues contain?
If her AGI is $63,000, how much IRA contribution can she deduct for tax purpose?
a) Use the normal model to approximate the binomial to determine the probability of at least 235 passengers showing up?
as a commercial buyer for a private supermarket brand suppose you take a random sample of 12 cans of beans packed at a
Good musicians can detect an unacceptable bow weight, i.e., a weight that differs from the mean by more than two standard deviations. What is the probability that a bow weight is unacceptable?
Describe the assumptions of normality and homogeneity of variance. When these assumptions are violated, what are your options? Are there cases in which the assumptions may technically be violated, yet have no impact on your intended analyses? Expl..
Suppose your prior on θ isuniform on [0, 1] and that she then makes two shots in a row. Assume that the outcomes of thetwo shots are independent.
What does a sampling distribution have to do with a confidence interval? What measures are used to calculate confidence intervals?
Random samples of size 64 are taken from a large population whose mean is 160 and whose standard deviation is 25. What is the mean of the sampling distribution of the sample mean?
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