Ascientist calculated the mean and standard deviation of a data set to be mean = 120 and standard deviation = 9. she then found that she was missing one data value from the set. she knows that the missing data value was exactly 3 standard deviations away from the mean. what was the missing data value?

a. 129
b. 147
c. 360
d. 369

The missing data value is 147

Step-by-step explanation:

If a point lies 3 standard deviations away from the mean, then the data point can be determined by simplifying the expression; μ±3σ. Where μ is the mean and σ the standard deviation. In this case this would be; 120±3(9)

step-by-step explanation:

which of the following statements correctly describes the expression below based on its degree and number of terms?

314 - 7x2 + 11

43

step-by-step explanation: