If the formula 8= x; is used to find the mean of the following sample, what is the value of n?
2, 63, 88, 10, 72,99
A. 6
B. 7

C. 8

D. 5

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?

Solve the equation. 2x - 8(x+1)= 6(2x - 3)