Answer:
1. About 68% of the data lie within one standard deviation of the mean.
2. About 95% of the data lie within two standard deviation of the mean.
3. About 99,7% of the data lie within three standard deviation of the mean.
Step-by-step explanation:
1. 34 + 34 = 68
2. 68 + 13,5 + 13,5 = 95
3. 95 + 2,35 + 2,35 = 99,7
It must be B.
There are two possibilities; in the first, the first digit is below 5, in the second, it is above. The probability of the first possibility is 3/8, because there are 3 possible digits below 5 and 8 total digits. In this scenario, the chance of the second digit being below 5 is 2/7, because one of the digits is taken. In the other possibility, which has a chance of 5/8, the probability of choosing a number below 5 is 3/7, since all of them are still available. Doing the arithmetic, you find that the total probability is 2/7. Hope this helps!
i believe the answer is 4.47, hope this helps
Answer:
y= -x
Step-by-step explanation:
I'm not sure if this helped, but here!!