B, 2 5/8.
2 and 5/8 times itself is 5 1/4, meaning its half of 5 1/4.
The value will be positive
since the slope is going upwards
Answer:
321
Step-by-step explanation:
0.05m + 3.95 = 20
0.05m = 16.05
m = 321
Answer: (14.18, 15.08)
Step-by-step explanation:
Given : Sample size : n= 64
Sample mean : 
Standard deviation : 
Significance level : 
Critical value : 
The confidence interval for population mean is given by :-

Hence, the 90% confidence interval for the population mean of waiting times is (14.18, 15.08).