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There is a 0.81 probability that MATH 106 students will correctly follow all instructions on the Final Exam. What is the probability that exactly 81 of the 100 students taking MATH 106 in a particular term correctly follow all Final Exam instructions? Round answer to the nearest ten thousandth (four places after decimal).
age at onset of dementia was determined for a sample of adults between the ages of 60 and 75. for 15 subjects m 67.2
Quality-control checks on wood paneling involve counting the number of surface flaws on each panel. On a given 2 × 8 ft panel, let X be the number of surface flaws due to uneven application of the final coat of finishing material, and let Y be the..
If appropriate, determine which methods differ in mean yields. At the 0.05 level of significance, is there evidence of a difference in the variation in yields among the different methods?
A researcher claims that the average age of people who buy lottery tickets is 70. A sample of 30 is selected and their ages are recorded as shown below. The standard deviation is 16. At alpha = 0.05 is there enough evidence to reject the researche..
Assume that the time between application of a stimulus and detection of a response in a chemistry lab which is defined as the reaction time is normally.
30% of households say they would feel secure if they had $50,000 in savings. you randomly select 8 households and ask them if they would feel secure if they had $50,000 in savings. find the probability that the number that say they would feel secu..
A single plant operates three galvanizing lines that are assumed to operate independently. What is the probability that none of the lines experiences a surface finish problem in 40 hours of operation.
suppose you want to test the claim that mu!=3.5 with standard deviation unknown. Given a sample size of n = 40 and a level of significance of alpha=.05, when should you reject H0.
As the numbers of observations increase the shape of a frequency polygon: (a) remains the same
assuming ship berthing follows a poisson distribution at jaxport. if a fuel spill occurs for 5 of all berthings. what
If the true population mean has shifted to μ = 11.9, determine the value of β corresponding to each of the rejection regions obtained in (i) and hence the power of each test. Comment on the effect that lowering α has on the corresponding values of ..
4. Why is a 99% confidence interval wider than a 95% confidence interval?
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