Answer:
(25.53, 37.87): 95% CI
(23.59, 39.81): 99% CI
Step-by-step explanation:
The margin of error of a confidence interval is given by:
In which 
is the standard deviation of the population and n is the size of the sample.
z is related to the confidence level. The higher the confidence level, the higher the values of z, and thus, we wider the confidence interval is.
In this question:
The narrower C.I. is the 95%, and the wider is the 99%. So
(25.53, 37.87): 95% CI
(23.59, 39.81): 99% CI
I got the answer isa D mate
Answer:
Step-by-step explanation:
you multiply it with 100
0.23 x 100 = 23%
<h3>
Answer: 2</h3>
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Explanation:
The greek letters mu and sigma represent the population mean and population standard deviation respectively.
mu = 104
sigma = 6
x = 116 is the raw score we want to convert to a z score
z = z score
z = (x-mu)/(sigma)
z = (116-104)/(6)
z = 12/6
z = 2
The positive z score tells us the raw score is above the mean.
