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If two random samples of size 400 are drawn from two populations that have standard deviations of $60 and $8 respectively, the relevant sample distribution, to test the difference in the two population means, has a standard deviation of what?'
Please show work.
mathew r. is conducting a study on the dollar value of orders placed with various suppliers. a sample of 10 orders
seventy percent of the bicycles sold by a certain store are mountain bikes. among 100 randomly selected bike purchases
Formulate null and alternative hypotheses about the slope of the true regression line. State a two-sided alternative, and perform a significance test.
children gender. a certain couple is equally likely to have either a boy child or a girl child. if the family has four
Brief description of the real-world situation or problem you selected to address, the independent and dependent variables you would study
heights of women have a bell-shaped distribution with a mean of 156 cm and a standard deviation of 8cm using the
Normal distribution with a mean of 8.1 minutes and a standard deviation of 1.9 minutes. For a randomly received emergency call, find the following probabilities. The response time is between 5 and 10 minutes
a simple random sample of fico credit rating score is obtained and the score are listed below. as of this writing the
What is the Standard Deviation of the Probability Distribution that would list the number of students (from 0 to 84) and the probability of each.
Sun Microsystems has approximately 50% of the high-end Unix machines market with its closest competitor being IBM. Suppose that 15 firms were in the market to purchase a high-end Unix machine. Assume that these firms listened to sales pitches by a..
At a state political rally, a spaker announced "we should raise test scores so that the students are above the state median". How would you analyze this statement?
What is the probability of making a Type II error if the population mean is 24,000 miles?
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