Alternate hypothesis for a one-sided test
It is claimed that in a bushel of peaches, less than ten percent are defective. A sample of 400 peaches is examined and 50 are found to be defective. What is the alternate hypothesis for a one-sided test?
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Each of four persons, named 1, 2, 3, 4 fires one shot at a target. Let Ak denote the event that person k hits the target, where k = 1, 2, 3, 4. Assume A1, A2, A3, A4 are independent events. If P(A1) = 0.7, P(A2) = 0.7, P(A3) = 0.9, P(A4) = 0.4, fi
Let x be the number of these parents who allow their children under age of 13 to stay home alone after school. Find the probability distribution of x.
The average age of the students in the sample was 23 with a standard deviation of 3.5. Determine whether or not the average age of the evening students is significantly different from 21 at the 1% significance level.
What is the lower limit of the confidence interval? What is the upper limit of the confidence interval?
A basketball player makes 80 percent of his foul shots per season. In a game where he takes 7 how many shots should he make and what is the standard deviation of the number of shots he should make?
A forgetful child tries to count the Skittles in a package, but he often loses his place and double-counts a Skittle. For each Skittle in the package, the child counts it and then, with probability p, counts it again. The exact number of Skittles
What is the probability that the space vehicle will have a successful launch? Given that the space vehicle had a successful launch, what is the probability that exactly two of the C-computers were functioning?
The time interval between two successive customers entering a store in a mall is exponentially distributed with a mean of 6.55 seconds. What is the probability that the time interval is more than 10 seconds?
A student in the concrete lab, places 6 low strength concrete test cylinders (3500 psi) with a batch of 9 high strength conrete test cylinders (8000 psi): (show all calculations)
The National Assessment of Educational Progress (NAEP) periodally administers tests on different subjects to high school students. In 2000, the grade 12 students in the sample average 301 on the mathematics test; the SD was 30. The likely size of
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