What requirements are necessary for a normal probability distribution to be a standard normal probability distribution? choose the correct answer below. a. the mean and standard deviation have the values of mu equals 0 and sigma equals 1. b. the mean and standard deviation have the values of mu equals 1 and sigma equals 1. c. the mean and standard deviation have the values of mu equals 0 and sigma equals 0. d. the mean and standard deviation have the values of mu equals 1 and sigma equals 0?

A standard normal distribution has a mean of zero; half the bell curve is to the left of zero and half to the right.

A standard normal distribution has a standard deviation of 1 and follows the 68-95-99.7 rule; e.g. 99.7% of the probability is between -3 and +3.

Choice a

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;