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A shipment of 20 hd television sets is received by a retailer. To protect herself against a bad shipment, she will inspect 5 sets and accept the entire lot if she observes either 0 or 1 defective. Suppose there are actually 7 defective sets in the shipment. What is the probability that she accepts the entire shipment?
A vending machine that dispenses coffee into cups must fill the cups with 7.8oz of liquid. Before selling the vending machine to a college or business, the company tests the machine to be sure it is dispensing an average amount of 7.8oz of coffee.
What roles did slavery play in the empires of the fifteenth century? Please reply in a one page essay using three outside sources besides your textbook. Please do not cite Wikipedia.
A study shows that employees that begin their work day at 9:00 a.m. vary their times of arrival uniformly from 8:40 a.m. to 9:30 a.m. The probability that a randomly chosen employee reports to work between 9:00 and 9:10 is?
Write a correct null and alternative hypothesis for testing the claim that the mean life of a battery for a cell phone is at least 115 hours.
Of the 500 students who responded to a survey about recycling on campus, 350 said they recycle on a regular basis. The sample proportion is ??
In a stepwise regression analysis, which variable would enter the equation first? Why?- Can you tell which variable will enter the equation second? Why or why not?
What is the Spearman coefficient of rank correlation, what range of values can it have, and how is its numerical value interpreted?
For the chil- dren, x = 90 and s = 5; for the young adults, x = 82 and s = 11; and for the older people, x = 88 and s = 6. Give a 95% con?dence interval for the population average rating for the new chocolate.
employment data at a large company reveal that 68 of the workers are married event a and that 52 of the workers are
a production process is set to manufacture bolts with a diameter of 0.5 inches. if production is meeting these
These data give ten characteristics of 324 firms. What issues do you see if these ten char- acteristics are to be used as explanatory variables in a model that describes the salary of the CEO?
fifteen tobacco plants of the same age and genetic strain were randomly assigned to three groups of five plants each.
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