The mean ( average ) is given as 1200 hours.
The standard deviation is 200, sample size is 100.
Find the standard error:
√(200^2 / 100) = 20
Now calculate the confidence interval. For 95% the Z number is 1.96
Multiply Z by the standard error:
1.96 x 20 =39.2
Now find the range that the mean should be within:
1200 - 39.2 = 1160.8
1200 + 39.2 = 1239.2
The samples should be between 1160.8 and 1239.2 for a 95% confidence interval.
Since the average was 1050, which is below 1160.8 the bulbs are not in compliance.
Answer:
I think it a for sure isn't 1 a little bit closer
You would have to divide by three and then you would get ____cal per bar
Answer:
Answer : 42
Step-by-step explanation:
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Hope this help :)</h2>
The first thing you would do is add all the numbers to get the total budget : $1500
Next you would calculate the present to get : 24.2% or just 24% if your rounding
