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Problem: A researcher tested two groups (females and males) of rats on memory performance. The following scores are for the number of correct choices they made on the task:
Females Males
9 8
7 6
7 8
8 6
9 7
9 9
9 6
Calculate the standard deviation for each group.
Which group shows more variability in their memory scores?
determine the point estimate of the population mean and margin of error for the confidence interval. lower bound is 16
Whizmo Toy Company is interested in creating an MRP schedule for the manufacture of a new toy car. It needs to set up this schedule for the toy car and the following components
If the average tax payer who makes $140,000 per year owes the government $18,200 with a standard deviation of $1500, and the IRS receives a 1040 tax documents from a customer who earned $140,000 that claims he only owes $12,000, should the IRS sus..
a) Find the probability that the next year's economy is weak and xyz declares a dividend.
It was believed that a certain university was discriminating against women in its admissions policy because 30 percent of aJ]
in constructing a confidence interval for a mean with unknown variance with a sample of 25 items bob used z instead of
Your budget allows you to spend 90,000 som. To the nearest day, how long can you afford to stay in Kyrgyzstan, on average?
Consider the following number of defective circuit boards produced by two different machines on seven randomly selected days. To three decimel places what is the mean of machine A?
Truck tire life is normally distributed with a mean of 60,000 miles and a standard deviation of 4,000 miles. You bought four tires. What is the probability that the average mileage of the four tires exceeds 66,000 miles?
At the 0.05 significance level, can we conclude that any of the regression coefficients are not equal to 0?
In a large metropolitan area, past records revealed that 30 percent of all the high school graduates go to college. Each student's choice to go to college is independent. From 20 graduates selected at random, what is the probability that exactly 8 wi..
Cullumber Company issues $370,000, 20-year, 7% bonds at 102. Prepare the journal entry to record the sale of these bonds on June 1, 2017.
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