Answer:
The confidence interval for this case would be (216.589, 223.411)
Step-by-step explanation:
Information given
represent the sample mean
population mean
s=12 represent the sample standard deviation
n=50 represent the sample size
Confidence interval
The confidence interval for the mean is given by the following formula:
(1)
The degrees of freedom are given by:
The Confidence level is 0.95 or 95%, the significance is 
and 
, the critical value for this case is 
And replacing we got:
The confidence interval for this case would be (216.589, 223.411)
Answer: 95/144
Explanation:
There are 12 light bulbs.
There are 5 defective bulbs.
There are 7 not defective bulbs.
P (at least one defective) = first one defective or second one defective or both defective.
P (at least one defective) = (5/12)(7/12) + (7/12)(5/12) + (5/12)(5/12) = 95/144
Assuming both angles indicate a point on the unit circle in quadrant 1, which is described in polar coordinates as having a range of 0 to pi/2 or 0 to 90 degrees, the cosine of a value decreases as angle increases. Naturally, since cos t = 0.45 and cos w = 0.89, cos t < cos w, therefore t > w.
Answer:
S is the correct answer If it needs to be in alphabetical order.
Step-by-step explanation:
(If not then it could be either S or V)
