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Assume that your county's population is similar to the American population in age distribution. What are the mean and standard deviation of the sample proportion who are at least 75 years of age in samples of 250 respondents?
a) Do a test to see if workers attitudes on this matter have changed using a 90% alpha. b) Explain to management what your findings are and what this suggests about future decisions vs work options.
Probability of a flush. Poker player holds flush when all 5 cards in hand belong to same suit (clubs, diamonds, hearts, or spades).
Describe the difference between sample and a sampling distribution. Your reply must be in complete sentences and you may use sketches to help you.
The Swansons are planning to fly to Hawaii from Toronto with a stopover in Los Angeles. There are five flights they can take between Toronto and Los Angeles and ten flights between Los Angeles and Hawaii.
Assume your statistics professor reports test grades as z-scores, and you got a score of 2.20 on the midterm exam. Write down a sentence explaining what that means.
A study is conducted to compare mean cholesterol levels for individuals following a low carbohydrate diet for at least 6 months to individuals following a conventional (low fat, low calorie )diet for at least 6 months.
Plot a scatter diagram of the results with Depth of Water as the independent variable.
Calculate the t-test statistic by hand. I don't understand steps to solve this problem. If you could provide me with a step by step narrative it would be appreciated.
How do you find the z-score corresponding to a score of X = 100 for the distributions given below? How do you know what direction they are going?
Calculate the expected value of this undertaking (make sure to take into account the thief's initial wealth).
the probability that it gets by the first inspector is 0.1. Of those that get past the first inspector, the second inspector will miss 5 out of 10. What fraction of the defective items gets by both inspectors?
If there are repeated independent trials and there are only two outcomes, what distribution should be used?
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