Answer:
-4
Step-by-step explanation:
We know the value has to be less than 0 since the answer is negative.
We also know that the value has to be greater than -13.
Now we can try the values -1 through -12
Just try each number and remember to add 11 to each value.
After doing this, you should have noticed that the number -4 had given the correct number. This means the answer is -4
The first standard deviation covers about 68% of the distribution in a normal curve. (34% higher, 34% lower than the mean). the second standard deviation covers 28% (14% between 1st and 2nd SD above the mean, 14% between 1st and 2nd SD below the mean). In our case
1 Standard deviation = 27 hours (we will approximate to 25 hours)
Mean = 2,000
This means that 34% of the distribution is between 1975 and 2000 hours (within 1 standard deviation below the mean)
2,000- 2,050 covers the range within 50 hours above the mean.
50 hours is roughly 2 standard deviations. The second standard deviation (standard deviation between 1 and 2) covers around 14% on each side of the distribution.
50 hours is roughly 2 standard deviations, which means we add 34% + 14% = 48%.
The range of 1,975 - 2,050 hours covers 34% of the distribution below the mean and 48% of the distribution above the mean.
This means that the probability that the light bulb will last somewhere within this range is 34% + 48% = 82%
The closest answer is 79%. The difference can be explained by the fact that, for simplicity, we approximated the standard deviation to be ~25 hours instead of the real standard deviation of 27 hours.
what shape is this? and yes i can change the answer so its not this hellooooooooooooooo whats the shape?
bro whats the shape
I CANNOT ANSWER THE QUESTION WITHOUT KNOWING THE SHAPE
The first quartile is the lowest end of the box, which is 8
