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teddybear8728
04.02.2020 •
Mathematics
Aset of data has a normal distribution with a mean of 49 and a standard deviation of 8. find the percent of data within the following interval. from 33 to 65.
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Ответ:
95 percent
Step-by-step explanation:
The empirical rule states that approximately 95% of observations will fall within 2 standard deviations of the mean if the population is approximately symmetrical(normal) in distribution.
The interval from 33 to 65 falls within 2 standard deviations of the mean;
49-2(8) = 33
49+2(8) = 65
Thus, 95 percent of data will fall within the interval from 33 to 65
Ответ:
If the length is 9 in centimeters, it will be 9 times 4/3 to change it to feet
9*4/3= 12 feet in length