Answer:
B
Step-by-step explanation:
Answer:
A. 28.27
B. 6ft
C. 18.85
Step-by-step explanation:
:)
Answer:
Minimum percentage = 88.89%
Step-by-step explanation:
We are given the following in the question:
Mean, μ = 95 dB
Standard Deviation, σ = 8 dB
Chebyshev's rule:
- According to this rule atleast percent of data lies within k standard deviation of mean.
We have to find the minimum percent of data lying within 3 standard deviations of the mean.
Putting values, we get,
Thus, minimum 88.895 of data lies within 3 standard deviations of the mean.
There's a 1/10 chance of drawing the yellow card once. Putting it back in the deck doesn't change this probability on the second draw. So the probability of drawing it twice is (1/10)(1/10) = 1/100