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.)
1) The mean and standard deviation of a population are 200 and 20, respectively.
The
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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