Answer:
The margin of error is of 0.7123 hours.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
Find the margin of error for a confidence interval for the population mean with a 90% confidence level.
We have that 
. So
The margin of error is of 0.7123 hours.
Answer:
1 out of 5, 20%
Step-by-step explanation:
since the spinner has 5 sections and your looking for how many times it would land on it the fraction or probability of landing the spinner on blue would be 1/5. So you would have the probability of 1 out 5.
The greatest spread is set c
-2x • 3x = -6x2 (the 2 is an exponent)
4y • -7y = -28y2 (the 2 is an exponent)
-2x • -7y = 14xy
4y • 3x = 12xy
14xy + 12xy = 26xy
—> -6x2(expo) - 28y2(expo) + 26xy
Check the answer again just to be sure, it’s been a while since I’ve had algebra!
Answer:
$35.00
Step-by-step explanation:
I just did it rn
