Given:
Sample mean = 65.4
Standard deviation = 1.2
Sample size = 45
Confidence level = 99%
To find:
The confidence interval.
Solution:
The formula for confidence interval is
where, 
is sample mean, z* is confidence value, s is standard deviation and n is sample size.
Confidence value or z-value at 99% = 2.58
Putting the given in the above formula, we get
Therefore, the correct option is D.
Answer:
2nd
Step-by-step explanation:
9.3 × 107 would be the scientific notation
Step-by-step explanation:
1/6 divided by 3=1/2.
I think this is the answer
Answer:
What do you need help with? Answer and I will tell you anything you need.
Step-by-step explanation:
