Answer:
4.8 feet
Step-by-step explanation:
Answer:
b. remains unchanged
Step-by-step explanation:
Formula for standard error of mean is;
SE = σ/√n
From the above, we can see that the standard error of mean is independent of the confidence coefficient as it doesn't affect the SE.
Now, we are given that;
random sample; n = 100
Standard deviation; σ = 1
Thus;
SE = 1/√100
SE = 1/10
Now, even if the confidence coefficient is reduced, we can see that it has no impact on the standard error of mean.
Thus, SE remains unchanged.
Answer:
24π
Step-by-step explanation:
Area of circle= πr²= 12²π= 144π
Shaded area= 144π*60/360= 144π/6= 24π
