Answer:
Step-by-step explanation:
Answer:
Now we just take square root on both sides of the interval and we got:
And the best option would be:
A. 2.2 < σ < 2.8
Step-by-step explanation:
Information provided
represent the sample mean
population mean
s=2.4 represent the sample standard deviation
n=83 represent the sample size
Confidence interval
The confidence interval for the population variance is given by the following formula:
The degrees of freedom are given by:
The Confidence is given by 0.90 or 90%, the value of
and
, the critical values for this case are:
And replacing into the formula for the interval we got:
Now we just take square root on both sides of the interval and we got:
And the best option would be:
A. 2.2 < σ < 2.8
Hello there!
<span>Find the volume of the cone. Use 3.14 as an approximation for pi. Round the answer to two decimal places.
A cone with radius of circular base of 6 centimeters and a height of 7 centimeters.
</span><span>C. 263.76cm3
</span>
I'd say it is A but I think you have made a tpyo
It should be 2*PI*radius^2 + 2*PI*radius*height
Answer:
z = 21
Step-by-step explanation:
z-6=15
z = 15 + 6
z = 21
hope it helps!