Suppose a normal distribution has a mean of 16 and a standard deviation of 4. a value of 26 is how many standard deviations away from the mean? −2.5 −1.5 1.5 2.5

To calculate the number of standard deviations away from the mean, we first subtract the actual score from the mean, then divide the difference by the standard deviation. In this case, our actual score is 26, so we subtract from the mean of 16, then divide by the SD of 4
(26 - 16) / 4 = 2.5

A) for the n row: 22+(n-1)×6therefore,b) 100-22=78that means (n-1)×6=7878÷6=1313+1=1414th row has 100 seats