Answer:
Explained below.
Step-by-step explanation:
(a)
The mean of the random variable X is:

(b)
The standard deviation of the random variable X is:

(c)
Compute the probability that the average number of cherries in 36 cherry puffs will not be less than 5 as follows:
Since the sample size is large i.e. <em>n</em> > 30, the sampling distribution of sample mean will follow a normal distribution.

(d)
Assume that the two groups are independent.
Then:


Compute the probability that the difference in the average number of cherries will be more than 2 as follows:

Answer:
C. (12, 0)
Step-by-step explanation:
Try the choices:
A. 10 > -3 -7·10 . . . true
B. 10 > 0 -7·7 . . . . true
C. 10 > 12 -7·0 . . . false . . . this is your answer
D. 10 > 2 -7·10 . . . true
You just have to divide 1056 by 32. So the answer is 33. 33 schools participate in the science fair.
Perimeter add them all up. Area multiply