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A panel of 11 jurors needs to be selected from a group of 25 people. How many different juries can be selected?
In a race with eight swimmers, how many different orders of finish are possible for the first four positions?
Build a scatter plot, Find the value of the linear correlation coefficient r, and find the critical value of r using α=0.05. Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables.
What is the problem or opportunity that this study is seeking to address? Why is this study important and to whom and what was the methodology used to select your sample of participants for the study.
the following data represent the breaking strengths of samples of 20 gauge insulated copper wire from three different
Consider the following statement and discuss its implications. 'It is possible for a statistically significant result to be of no particular practical significance, depending on the context of the analysis.'
Find that the mean consumption of tea is 7.8 gallons per year with a standard deviation of 2.67 gallons.At α=0.07 can you support the society's claim?
Estimate the cdf F (x). Compute and plot a 95 percent con?dence envelope for F (as described in the appendix). Find an approximate 95 percent con?dence interval for F (4.9) - F (4.3).
For a simple random sample of ten patients who have recently had knee surgery, the scores are as follows: 101, 92, 94, 88, 52, 93, 76, 84, 72, and 98. Construct and interpret the 90% and 95% confidence intervals for the population mean.
a maker of a certain brand of low fat cereal bars claims the average saturated fat content is 0.5 grams. to check the
Sstandard deviation of the test scores are 74 and 2, respectively, and the distribution of scores is bell-shaped and symmetric. Suppose the trainee in question received a score of 69. Compute the trainee's z-score.
Show that under the assumption of small percentage tolerances there is a simple formula for the approximate percentage tolerance of the product of two intervals in terms of the tolerances of the factors.
Can you think of other cases where the expected probabilities do not quite agree with the empirical values based on relative frequency?
Misses the dart board with probability 0:02, what is the probability that seven throws will result in no bull's-eyes, no triples, a double twice, and a complete miss once?
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