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Suppose a committee of 3 people is to be selected at random from a group consisting of 6 men adn 4 women. What is the probability that all three people selected are men?
Show that there is no rational number b/a whose square is 2, as follows: if b^2 = 2a^2, then b is even, so b = 2c, so, substituting and cancelling 2, 2c^2 = a^2.
How large random sample of potential voters will be required to evaluate result with 95% confidence and with margin of error of plus and minus 3%?
Use a 0.05 significance level to test the claim that these credit rating are from a population with a mean that is equal to 700.
If you wanted to determine which of the two learning programs made the bigger difference in the participant's knowledge and skills, what statistical tests would you perform? What assumptions would the test have to meet before you proceed? How would y..
a web based software company is interested in estimating the proportion of individuals who use the firefox browser. in
Why are you no longer directly comparing sample means? How does using the F test - the analysis of variance (ANOVA) reduce your Type I error rate? What is the difference between a within-groups and a between-groups variance?
a normal population has a mean of 60 and a standard deviation of 11. you select a random sample of 9. compute the
The local operations manager for the IRS must decide whether to hire 1, 2, or 3 temporary workers. He estimates that net revenues will vary with how well taxpayers comply with the new tax code.
in june an investor purchased 250 shares of oracle an information technology company stock at 20 per share. in august
Assuming that the data is normally distributed and the sample size is greater than 30, calculate the critical values for a two tailed and a one-tailed test when alpha = 0.05
Classifcation Which of the following are continuous variables and which are discrete?
1.in the table below we examine the relationship between final grade and the reported hours per week each student said
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