Statistics for Management and Economics (Book Only)
11th Edition
ISBN: 9781337296946
Author: Gerald Keller
Publisher: Cengage Learning
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Chapter 5.3, Problem 14E
To determine
Stratified random sample:
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A political pollster wants to ensure that their poll on attitudes toward separation of church and state gets responses from all major religious groups. What kind of sampling method should be used?
A random sample of 1-gallon cartons of milk is selected from the automatic filling machine. The contents are precisely measured. The measurements are shown to the right. The measurements are in ounces (1 gallon = 128 oz.)
127.46
129.83
129.51
129.75
128.45
127.34
129.18
127.29
127.28
128.46
127.7
130.87
128.04
125.76
127.77
126.72
127.58
128.5
127.37
128.08
127.51
127.66
129.78
128.42
126.35
126.34
128.53
128.48
15
The sum of the fill of the sample containers is,
a
3586.01
b
3481.56
c
3380.16
d
3281.71
Chapter 5 Solutions
Statistics for Management and Economics (Book Only)
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- A random sample of 1-gallon cartons of milk is selected from the automatic filling machine. The contents are precisely measured. The measurements are shown to the right. The measurements are in ounces (1 gallon = 128 oz.) 127.46 129.83 129.51 129.75 128.45 127.34 129.18 127.29 127.28 128.46 127.7 130.87 128.04 125.76 127.77 126.72 127.58 128.5 127.37 128.08 127.51 127.66 129.78 128.42 126.35 126.34 128.53 128.48 16 The mean fill of the sample of containers is, a 131.95 b 130.65 c 129.35 d 128.07arrow_forwardPlease answer all parts Not a previously submitted questionarrow_forwardAlejandro is selling HDMI cables on eBay, and is trying to determine the best price to sell at. For the last 10 weeks, he has adjusted his price slightly each week and tracked the number of cables he sold. He plotted the results, and drew a line he feels fits the data well. Price ($) 3, 3.25, 3.5, 3.75, 4, 4.25, 4.5, 4.75, 5 Quantity Sold - 50, 100, 150, 200, 250 a) The line of best fit passes through the points (3.50, 230) and (4.75, 210). Find an equation for the line. Use variables: p for price in dollars, and Q for quantity of cables sold. b) Using this model, predict the number of cables Alejandro would sell at a price of $3.65, to the nearest whole cable. cablesarrow_forward
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