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1) The alternative hypothesis is a < You want to test decide whether to reject Ho if the level of significance is a = 0.1. What is the Zc value that defines the boundary of the reject region? 2) The alternative hypothesis is a > You want to test decide whether to reject Ho if the level of significance is a = 0.05. What is the Zc value that defines the boundary of the reject region?
Standard deviation was 8.2 hours. What is the 95% confidence interval for the mean number of hours worked per week for the population of u.s men?
use the following sample data to test whether the GPA are different at the 0.05 level of significance.
The bank credit card department of Carolina Bank knows from experience that 5 percent of the card holders have had some high school, 15 percent have completed high school, 25 percent have had some college
Assume adults have IQ scores that are normally distributed with a mean of 105 and a standard dviation 20. Find the probability that a rondomly selected adult has an IQ betwwen 93 and 117.
a psychological test used to measure the level of hostility is known to produce scores which are normally distributed
Determine the probability that: a) Exactly 3 will have this mild side effect.
A firm engaged in manufacturing undergarments for gents employs 100 male and 144 female workers. The average production per day of a male worker is 60 items with a variance of 15 items, and that of a female workers is 65 items with a variance of 1..
Suppose that 12 people must travel in 3 cars containing 4 people each from LA to New York. How many different arrangements are there?
Suppose four heads appeared face up on four tosses of a coin. what is the probability that a head will appear face up in the next toss of the coin?
What is the probability that in two randomly select open heart operations at least one will be successful? Draw a tree diagram.
What can one conclude about the librarian's hypothesis at a level of significance of .05?
Compare the percentage found in b) to percentage given by Empirical Rule and Chebyshev's Rule. (Make a table 3 x 3).
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