A. No matter what M is, it will correspond to the squared version of 18m
Answer:
Step-by-step explanation:I divided 4 an 20 an I got 5
(1,1) because x + 2y <4
=1 + 2(1)
= 3 which is less than 4
Answer: D) 
Step-by-step explanation:
As per given , we have
Sample size : n= 15
sample mean : 
Sample standard deviation: s= $20
Since population standard deviation is unknown , so we use t-test.
Significance level for 95% confidence : 
Critical t-value :
[Using students' t-value table]
Required 95% Confidence interval :-

Hence, the required 95% confidence interval for the mean amount its credit card customers spent on their first visit to the chain's new store in the mall assuming that the amount spent follows a normal distribution.:
