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A men's clothing store has ordered 36 shirts with various patterns. Inventory records show 20 different styles of ties currently in stock. How many different arrangements of shirt and tie can be offered? 5) A) 3,080 B) 1,540 C) 720 D) 56 E) none of the above
Suppose the population standard deviation is 350 kilowatt hours. Determine the standard error of the mean. With a .95 probability, determine the margin of error.
Determine the probability that among 6 companies surveyed at random, number that provide employees 4 weeks of vacation after 15 years of employment.
At 0.01 level of significance, is there evidence that mean price is higher at Whole Foods Market than at Fairyway supermarket? Interpret the meaning of p-value in (i).
Compute the coefficient of determination, r 2 , and interpret its meaning.
If the researchers test 95- newborns for the presence of this gene, would it be unlikely for them to find fewer than 25 children with the gene?
The total profit (in dollars) for sales of x rowing machines is given by P(x) = -0.2x^2 + 300x - 200. What is the profit if 500 are sold? For what value of x will the profit be at a maximum?
In a standard test for reaction time, female candidates for flight school are found to have times that are normally distributed with a mean of 0.65 seconds and a standard deviation of 0.15 seconds.
What is the expected value (expected profit) of producing an all weather tire? Of producing a high performance tire?
a man and a woman make an appointment to meet between 5 p.m and 6 p.m at a certain location and they agree that
can you reject the auto maker's claim that the mean gas mileage of its sports utility vehicle is 20 miles per gallon? Assume the population is normally distributed.
Explain the difference between a left-tailed, two-tailed, and right-tailed test. When would we choose a two-tailed test? How can we tell the direction of the test by looking at a pair of hypothesis?
145 out of 165 people who lost luggage on that airline were reunited with the missing items by the next day. Does this cast doubt on the airlines claim?
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