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Find the margin of error for the 95% confidence interval used to estimate the population proportion.
In a clinical test with 2349 subjects, 1232 showed improved from the treatment.
A) 0.0273
B) 0.0226
C) 0.0172
D) 00202
Assume that the number of left-handers is a binomial random variable. (Refer to the formula for mean and standard deviation for binomial prob. Distribution)
Difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
Discuss possible study designs. Which of the designs would we use to test our research hypothesis?
Assume the population standard deviation is 1.2 hours. The standard error of the mean is:
Decide if the events A and B are mutually exclusive or not mutually exclusive. A card is drawn from standard deck of 52 playing cards.
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
A random sample of students is selected, and each one is asked to try first brand A and then brand B, or vice versa with the order determined at random.
prevent coronary artery vasoconstriction and the attendant reduction in blood flow to the heart and mechanical function.
Does this result support original claim, or is population percentage considerably less than 45%. Use alpha=.05 for level of significance.
Explain the effect outliers can have on the analysis of the center of this data set. Based on the box-plot and histogram you created for problem 1, do there appear to be any outliers?
How likely is it that the store owner will make at least $7,000 if she implements your suggestion?
At.01 significance level is it sensible to conclude that modification decreased the number of traffic accidents?
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