Answer:
simplest form is 7/8
Step-by-step explanation:
Double the side and subtract by 360
Answer: 0.0170
Step-by-step explanation:
Given : The mean amount purchased by a typical customer at Churchill’s Grocery Store is $23.50, with a standard deviation of $5.00.
i.e. 

We assume the distribution of amounts purchased follows the normal distribution.
Sample size : n=50
Let
be the sample mean.
Formula : 
Then, the probability that the sample mean is at least $25.00 will be :-

Hence, the likelihood the sample mean is at least $25.00= 0.0170
Answer:
( -0.5 , 6.5 )
Step-by-step explanation:
X= -4; f(x)= -15
X= 2; f(x)= 3
X=5; f(x)= 12