252 = 2^2*3^2*7
√252 = 6√7
Answer:
-6
Step-by-step explanation:
Answer:
Step-by-step explanation:
Hello!
You have sample of n=7 with mean X[bar]= 1403 and standard deviation S=27 and are required to estimate the mean with a 95%CI.
Asuming this sample comes from a normal population I'll use a stuent t to estimate the interval (a sample of 7 units is too small for the standard normal to be accurate for the estimation):
[X[bar]±
*
]

[1403±2.365*
]
[1378.87;1427.13]
The margin of error is the semiamplitude of the interval and you can calculate it as:

With a confidence level of 95% you'd expect that the real value of the mean is contained by the interval [1378.87;1427.13], the best estimate of the mean value is expected to be ± 24.13 of 1403.
I hope it helps!
Yes it is possible for 15,000 people to ride the thrill ride in 1 day....
Answer:
A: Speedy Rentals is $100 cheaper if you only rent a car for 4 months
B: If you rented a car for 5 months then both places woulb be the same amount
Step-by-step explanation: