Suppose a random variable x is best described by a normal distribution with = 60 and o=4. Find the Z-score that corresponds to the value x = 64. 1 15 64

What is the SD of a distribution if the mean is 4.5 and a z score of 3.5 corresponds to a raw score of 15?

The distribution of sample variances tends to be a normal distribution. true or false?

The random variable X has a uniform distribution with values between 15 and 25. What is the mean and standard deviation of X?

What position in the distribution corresponds to a z-score of z = +2.00?​

a normal distribution has a mean of u=60 with o=15.  if one score is randomly selected from the distribution, what is the probability that the score will be greater than x=35

he average amount of time boys and girls  spend playing sports each week is believed to be the same. A sample of equal size n is taken from boys and girls , the mean of the boys is 29 hours  with standard deviation 4  hours and the mean of the girls  is 27 hours with standard deviation 3 hours Both populations have a normal distribution. The calculated value is  1.2       n =