First of all, ur not stupid, ur brain is just tired.
9.
9.37
9.3
9.219
9.129
11.
5.312
5.231
5.132
5.123
Answer:
(96.91, 101.09)
Step-by-step explanation:
To calculate the interval, you require the Z value at 95% confidence interval. The Z value is 1.96. The formula to calculate the confidence interval:

Where X is the mean and s is the standard deviation and x the sample size:

The interval is (96.91, 101.09)
Answer:
What?
Step-by-step explanation:
Answer:
the first one is true:)
Step-by-step explanation: