Answer:
Negative 66.5 or -66.5
Step-by-step explanation:
You need to put minus before the number branliest me
90-62=28
x=28
90-62=28
y=28
*right angle triangle is 90 degrees
Answer: 
Step-by-step explanation:
The confidence interval estimate for the population mean is given by :-
, where
is the sample mean and ME is the margin of error.
Given : Sample mean: 
The margin of error for a 98% confidence interval estimate for the population mean using the Student's t-distribution : 
Now, the confidence interval estimate for the population mean will be :-

Hence, the 98% confidence interval estimate for the population mean using the Student's t-distribution = 