<span>In a normal distribution 68.27% of the values are within one standard deviation from the mean, 95.5% of the values are within two standard deviations from the mean, and 99.7 % of the values are within three standard deviations of the mean
With that you have the answer to the three questions:
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<span>a. significantly high (or at least 2 standard deviations above the mean).
99.5% of the values are within 2 standard deviations from the mean, half of 100% - 95.5% = 4.5% / 2 = 2.25% are above the mean, so the answer is 2.25%
b. significantly low (or at least 2 standard deviations below the mean).
The other half are below 2 standard deviations, so the answer is 2.25%
c. not significant (or less than 2 standard deviations away from the mean).
As said, 95.5% are within the band of two standard deviations from the mean, so the answer is 95.5%.
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Answer:
{x,y}={5,-3}
Step-by-step explanation:
B= number of beakers which there are 450
t= number of test tubes
the answer is 1.46
It’s 10 points not 20
Explanation
Answer:
9.6 km.
Step-by-step explanation:
The dimensions of the rectangular plot of land are given by 0.7 km by 0.5 km.
Therefore, the length of the rectangle is 0.7 km and its width is 0.5 km.
Therefore, the perimeter of the plot is 2(L + W) = 2(0.7 + 0.5) = 2.4 km
Now, we have to fence the plot with a 4 row wire.
Hence, the total length of the wire that will be required will be (4 × 2.4) = 9.6 km. (Answer)
