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Provide an example of a null and alternative hypothesis for a hypothetical research problem of interest to you. Specify if the test of significance would be a one-tailed or two-tailed test and the rationale why the test of significance is one-tailed or two-tailed
suppose a secondary outcome is recorded in the trial described in problem 10 reflecting asthma symptom severity
weakly earnings on a certain import venture are approximately normally distributed with a known mean of 219 and unknown
NY is and the standard deviation is , then according to Chebyshev's theorem, the percentage of averages low temperatures in Rochester, NY between and is _____%>?
Suppose you had flipped a fair coin 19 times and "tails" had come up each time. The probability of now tossing a "head" on the 20th flip would then be:
you play two games against an opponent. the probability you win the first game is 0.7. if you win the first game the
Four hundred people apply for three jobs. 110 of the applicants are women. (a) If three persons are selected at random, what is the probability that all are women?
the number of gallons of paint that home depot sells in a given day is normally distributed with a mean of 230 gallons
there are c different types of coupon and each time you obtain a coupon it is equally likely to be any of the c types.
Determine the test statistic. At 95% confidence, test to determine if more than 21% of the population will like the new soft drink.
breaking strength in kg of the front part of a new vehicle is normally distributed. in 10 trials the breaking strengths
A company is interested in knowing which are the potential sales next year if you use $ 20,000 in advertising expenses. The company uses the information from previous years to make its sales forecast.
Toss ten unbiased coins once at the same time, what is the probability that seven heads showing up? Use Binomial Distribution to calculate the probability.
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