Asample data set has a mean of 61.1 and a standard deviation of 7.8. find the minimum and maximum “usual” values of the data set. 45.5 and 76.7 53.3 and 68.9 51.3 and 70.9 37.7 and 84.5

Solution: We are given:

From the empirical rule of the normal distribution, we know that usual values of the data fall within 2 standard deviation from the mean.

Therefore, the minimum usual value is:

The maximum usual value is:

Therefore, the minimum and maximum “usual” values of the data set are:

45.5 and 76.7

493 would be the correct answer

step-by-step explanation:

hi,

the area of abcd is 245.

3*24=230

4*94=1039

2*12=24

add all of them up, you get 2450