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500 trials where each trial consists of tossing four coins and counting the number of heads. Find the number of cases in which exactly 3 heads turned up. Based on that result, what is the empirical probability of getting exactly three heads in four tosses of the coin?
The pooled variance of two samples is:
The mathematics SAT scores of the seven students in a mathematics seminar are 533, 553, 578, 586, 619, 626, and 633. Suppose that the student with the score of 533 drops the seminar and is replaced by a student with a score of 765.
the boiling point of each of 16 samples of a certain brand of hydrogenated vegetable oil used in a fryer was determined
a consumer advocacy group recorded several variables on 140 models of cars. the resulting information was used to
statistical probability is most closely associated with which of the following types of statistics?descriptive
If 36 women are selected at random, find the mean, and standard deviation, of the population of sample means. Suppose that the sampling is done without replacement and use a finite population correction factor.
the average length of stay at a local hospital is 4.9 days. assuming a population standard deviation of 3.5 days what
question kelson sporting equipment inc. makes two different types of baseball gloves a regular model and a catchers
each computer chip made in a certain plant will independently be defective with probability .25. if a sample of 1000
you take a trip by air that involves three independent flights. if there is an 82 percent chance each specific leg of
Solve manually and then by mega stat. Indicate your decision rule, your hypotheses and your statistical and management conclusions."
A vending machine is configured to accept only those quarters with weights between 5.550 g and 5.790 g. If 280 different quarters are inserted into the vending machine, what is the expected number of rejected quarters?
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