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A box contains 4 bolts. Two of them, labeled #1 and #2, are 5 mm in diameter, and two of them, labeled #3 and #4, are 7 mm in diameter. Bolts are randomly selected until a 5 mm bolt is obtained. The outcomes are the sequences of bolts that can be selected. So one outcome is 1, and the other is 342.
a.) list the equally likely outcomes.b.) what is the probability that both sides are 7mm?c.) what is the probability that one bolt is 5mm and the other is 7mm?
In determining automobile mileage ratings, it was found that the mpg in the city (x) for a certain model is normally distributed, with a mean of 24 mpg and a standard deviation of 1.0 mpg. Find the following:
What is the probability trading volume will be less than 400 million shares?
The heights and shoe sizes of the starting lineup of a tournament baseball team are listed below. Use a calculator to determine the correlation coefficient.
In the graphical method, how do you know when a problem is infeasible, unbounded, or when it has multiple optimal solutions? What are the essential ingredients of an LP model? Why is it helpful to understand the characteristics of LP models?
At the .01 significance level, can the manufacturer conclude that the price reduction resulted in an increase in sales?
They would like the margin of error of the 95% confidence interval for the proportion to be 0.05 or less. Use the guessed value p = 0.25 to find the required sample size.
A researcher wants to see if there is a relationship between birth order and personality. A sample of n = 100 people is obtained, all of whom grew up in 3-child families.
A fair die is rolled nine times. What is the probability that an odd number (1,3 or 5) will occur less than 3 times?
Which are likely to be independent events? For those you think are not, suggest reasons why.
Compute the value of z and state your decision regarding the null hypothesis.
A sociologist wishes to conduct a poll to estimate the percentage of Americans who favor affirmative action programs for women and minorities for admissions to colleges and universities.
Single group post-test and internal validity threats - Answer the question either by writing the design name or by describing the design using standard notation
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