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1) An experiment consists of making 80 telephone calls in order to sell a particular insurance policy.
a) What is the random variable?
b) What values can the random variable take?
c) Is the random variable discrete or continuous?
2) An experiment consists of determining the speed of automobiles on a highway by the use of radar equipment.
c) Is the random variable discretae or continuous?
A processor of carrots cuts green top off each carrot, washes the carrots, and inserts six to a package. Twenty packages are inserted in a box for shipment. To test weight of the boxes, a few were checked.
Determine the probability in big class that both sections are covered? Only one section? Neither section? Determine the expected number of sections covered?
If the computed value for this problem is +2.33, and the level of significance is 0.05, can we conclude that the recall proportions for the two commercials are same?
In a poll of 1,004 adults, 93% indicated that restaurants and bars should refuse service to patrons who have had too much to drink. Construct the 90% confidence interval for the proportion of all adults who feel the identical way.
A study sponsored by American Express Co. and the French government tourist office found that old American stereotypes about French unfriendliness weren't true.
The mean of a sample is 22.5. The mean of 1000 bootstrapped samples is 22.491. The bias of the bootstrap mean is
Given that both balls selected are white what is the probability that bowl 3 was selected?
Determine the distributions given below represent a probability distribution. Justify your answer.
He randomly samples 45 oil wells throughout the United States and determines the mean output to be 10.7 barrels per day with a standard deviation of 1.3 barrels. Test the researcher's claim at the .025 level of significance.
The study does not give sufficient evidence to support the claim that less than 75% of college students spend less than $250 per semester on textbooks.
If you have a statistical package that computes binomial probabilities, find the probability that at least five funds outperform the market in all 10 years.
You find that a random sample of five microwave ovens has a mean repair cost of $75 and a standard deviation of $12.50. At α = 0.01, do you have enough evidence to support the repairer's claim?
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