The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is $2000 and the standard deviation is $115. What is the approximate percentage of buyers who paid less than $1770? % What is the approximate percentage of buyers who paid between $2000 and $2115? % What is the approximate percentage of buyers who paid between $1885 and $2115? % What is the approximate percentage of buyers who paid more than $2345? % What is the approximate percentage of buyers who paid between $2000 and $2230? % What is the approximate percentage of buyers who paid between $1655 and $2000? %
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The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is $1800 and the standard deviation is $135. 1395 1530 1665 1800 1935 2070 2205 Distribution of Prices What is the approximate percentage of buyers who paid between $1800 and $1935? What is the approximate percentage of buyers who paid between $1665 and $1935? What is the approximate percentage of buyers who paid more than $2070? What is the approximate percentage of buyers who paid between $1530 and $1800? What is the approximate percentage of buyers who paid between $1800 and $2205? What is the approximate percentage of buyers who paid more than $2205?
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The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is $1800 and the standard deviation is $130. 1410 1540 1670 1800 1930 2060 2190 Distribution of Prices What is the approximate percentage of buyers who paid between $1800 and $1930? What is the approximate percentage of buyers who paid less than $1540? What is the approximate percentage of buyers who paid between $1540 and $1800? What is the approximate percentage of buyers who paid between $1410 and $1800? What is the approximate percentage of buyers who paid more than $2190? What is the approximate percentage of buyers who paid between $1670 and $1930?
Supreeta N.
Find the range, variance, and standard deviation for the given sample data. Include appropriate units (such as "minutes") in your results. (The same data were used in Section 3-I, where we found measures of center. Here we find measures of variation.) Then answer the given questions. Listed below are selling prices in dollars of TVs that are 60 inches or larger and rated as a "best buy" by Consumer Reports magazine. Are the measures of variation likely to be typical for all TVs that are 60 inches or larger? $$\begin{array}{rrrrrrrrrr} 1800 & 1500 & 1200 & 1500 & 1400 & 1600 & 1500 & 950 & 1600 & 1150 & 1500 & 1750 \end{array}$$
Describing, Exploring, and Comparing Data
Measures of Variation
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