Questions from Statistical Techniques


Q: Using the concepts of sample and population, describe how a presidential

Using the concepts of sample and population, describe how a presidential election is unlike an “exit” poll of the electorate.

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Q: A large pharmaceutical company hires business administration graduates to sell its products

A large pharmaceutical company hires business administration graduates to sell its products. The company is growing rapidly and dedicates only 1 day of sales training for new salespeople. The company’...

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Q: The following chart reports the number of cell phones sold at a

The following chart reports the number of cell phones sold at a big-box retail store for the last 26 days. a. What are the maximum and the minimum numbers of cell phones sold in a day? b. What is a...

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Q: The third row of a stem-and-leaf chart appears

The third row of a stem-and-leaf chart appears as follows: 21 | 0 1 3 5 7 9. Assume whole number values. a. What is the “possible range” of the values in this row? b. How many data values are in this...

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Q: AVX Home Entertainment, Inc., recently began a “no-

AVX Home Entertainment, Inc., recently began a “no-hassles” return policy. A sample of 500 customers who recently returned items showed 400 thought the policy was fair, 32 thought it took too long to...

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Q: The following chart shows the number of patients admitted daily to Memorial

The following chart shows the number of patients admitted daily to Memorial Hospital through the emergency room. a. What is the midpoint of the 2 up to 4 class? b. How many days were 2 up to 4 patie...

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Q: The following are the ages of the 10 people in the Java

The following are the ages of the 10 people in the Java Coffee Shop at the Southwyck Shopping Mall at 10 a.m. Determine the (a) Mean, (b) Median, and (c) Mode.

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Q: The following chart depicts the average amounts spent by consumers on holiday

The following chart depicts the average amounts spent by consumers on holiday gifts. Write a brief report summarizing the amounts spent during the holidays. Be sure to include the total amount spent...

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Q: An investor buys 100 shares of AT&T stock and

An investor buys 100 shares of AT&T stock and records its price change daily. a. List several possible events for this experiment. b. Which concept of probability did you use in (a)?

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Q: The events X and Y are mutually exclusive. Suppose P(

The events X and Y are mutually exclusive. Suppose P(X) = .05 and P(Y) = .02. What is the probability of either X or Y occurring? What is the probability that neither X nor Y will happen?

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