Answer:
B
Look at drawing and that will walk you through it
please guys help me pzl
1 answer:
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For a sample size of 20 players, 68% of the sample means fall within 19.32 and 20.98
<h3>What is a sample size?</h3>The sample size is a term used in market research for defining the number of subjects included in a sample size. By sample size, we understand a group of subjects that are selected from the general population and is considered a representative of the real population for that specific study.
Empirical rule states that for a normal distribution, 68% of the values are within one standard deviation from the mean, 95% of the values are within two standard deviation from the mean and 99.7% of the values are within three standard deviation from the mean.
For a population mean of 20.15 and a standard deviation of 3.7
68% are within μ ± σ/√n,
hence,
68% = 20.15 ± 3.7/√20 = (19.32, 20.98)
For a sample size of 20 players, 68% of the sample means fall within 19.32 and 20.98.
To learn more about sample size from the given link:
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Answer:
Computing the 6-Point DFT of x(n), where X = 0,1,2,3,4,5
x(0) = 11
x(1) = 21/8 -j13/8
x(2) = 27/8 + j33/32
x(3) = 1139/256 + j91/256
x(4) = 4389/1024
x(5) = 4.14685 - j1379/8192
Step-by-step explanation:
See the picture for workings.
Given X(n) = { 4, -1, 2, 5, -2, 3}
Six point DFT implies that N = 6
Step 1 = write out equation X(k)
Step 2 = substitute "Wn" in the equation X(k) to give a new equation
Step 3 = when N=6, substitute for "N" in the new equation and simplify the new X(k) equation.
Step 4 = use 0, 1, 2, 3, 4, 5 in finding the DFT
