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Get Full Access to Statistical Techniques In Business And Economics - 15 Edition - Chapter Chapter 13 - Problem 3
Get Full Access to Statistical Techniques In Business And Economics - 15 Edition - Chapter Chapter 13 - Problem 3

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# Bi-lo Appliance Super-Store has outlets in several large metropolitan areas in New

ISBN: 9780073401805 480

## Solution for problem 3 Chapter Chapter 13

Statistical Techniques in Business and Economics | 15th Edition

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Statistical Techniques in Business and Economics | 15th Edition

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Problem 3

Bi-lo Appliance Super-Store has outlets in several large metropolitan areas in New England. The general sales manager aired a commercial for a digital camera on selected local TV stations prior to a sale starting on Saturday and ending Sunday. She obtained the information for SaturdaySunday digital camera sales at the various outlets and paired it with the number of times the advertisement was shown on the local TV stations. The purpose is to find whether there is any relationship between the number of times the advertisement was aired and digital camera sales. The pairings are: Location of Number of SaturdaySunday Sales TV Station Airings (\$ thousands) Providence 4 15 Springfield 2 8 New Haven 5 21 Boston 6 24 Hartford 3 17 One-Hour Number of Production Assemblers (units) 2 15 4 25 1 10 5 40 3 30 a. What is the dependent variable? b. Draw a scatter diagram. c. Determine the correlation coefficient. d. Interpret these statistical measures.

Step-by-Step Solution:
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Intro to Stats Chapter 6 The Normal Distribution  Normally distributed variable- shape of normal curve  Z scores have mean of 0 and standard deviation of 1  The standard version of normally distributed variable x, has the standard normal distribution 6.2 areas under the standard normal curve  Basic properties of standard normal curve 1. total area under curve is 1 2. never touches horizontal axis 3. left side mirror of right 4. almost all the data is between -3 and 3 ***figure 6.18 – every problem for the rest of the semester can come back to 1 of the 3 pictures***  easy – area to the left of z  tricky- 1- area to the left of z 

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