MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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1) The mean and standard deviation of a population are 200 and 20, respectively.
The probability of selecting one data value less than 190 is ____ %. (Round answer to the nearest percent (whole number). Do not write the % sign.)

2) A. C. Neilsen reported that children between the ages of 2 and 5 watch an average of 25 hours of television per week. 
Assume the variable is normally distributed and the standard deviation is 3 hours.
If 20 children between the ages of 2 and 5 are randomly selected, 
the number of children in the sample who watch at least 25.2 hours of television is?

Give answer to the nearest whole number, not a percent.

3)  A. C. Neilsen reported that children between the ages of 2 and 5 watch an average of 25 hours of television per week. 
Assume the variable is normally distributed and the standard deviation is 3 hours.
If 20 children between the ages of 2 and 5 are randomly selected, 
the number of children in the sample who watch at most 22.5 hours of television is?
 .  Give nearest whole number, not a percent.

4). A. C. Neilsen reported that children between the ages of 2 and 5 watch an average of 25 hours of television per week. 
Assume the variable is normally distributed and the standard deviation is 3 hours.
If 20 children between the ages of 2 and 5 are randomly selected, ___ hours.

Round answer to three decimal places

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