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According to a survey, 62% of murders committed last year were cleared by arrest or exceptional means. Fifty murders committed last year are randomly selected, and the number cleared by arrest or exceptional means is recorded.
(a) Find the probability that exactly 39 of the murders were cleared.
Identify the sampling distribution to be used: the standard normal distribution or the Student's t distribution. Find the critical value(s).
a researcher reports an f-ratio with df 3 36 from an independent-measures research study.a. how many treatment
Test at the .05 significance level the null hypothesis that the population proportions are equal against the two-tailed alternative.
What is the sample space for this process and evaluate the variance of the intelligence scores
locate a news article or report in a popular news source such as time newsweek or the wall street journal in which a
In 1851 there were 25,466 nurses in Great Britain. Find the probability that a British nurse selected at random in 1851 would be 60 years or older. (My guess is The sum of the percent of nurses 60 years are older are added equaling 36% or 1967.76/2..
Recall that the trash bag manufacturer has concluded that its new 30 gallon bag will be the strongest such bag on the market if its mean breaking strength is at least 50 pounds.
A recent national survey found that high school students watched an average (mean) of 7.5 DVDs per month with a population standard deviation of .60.
We suspect that automobile insurance premiums (in dollars) may be steadily decreasing with the driver's driving experience (in years), so we choose a random sample of drivers who have similar automobile insurance coverage and collect data about th..
Manual calculations.
The library is to be given 3 books as a gift. The books will be selected from a list of 18 titles. If each book selected must have a different title, how many possible selections are there?
Given that we have collected pairs of observations on two variables X and Y , we would consider fitting a straight line with X as an explanatory variable if:
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