Mathematics, 02.10.2020 09:01 johny144
A random sample of size n = 85 is taken from a finite population of size N = 479 with mean μ = 253 and variance σ2 = 436. [You may find it useful to reference the z table.]
a-1. Is it necessary to apply the finite population correction factor?
Yes
No
a-2. Calculate the expected value and the standard error of the sample mean.(Round “expected value” to a whole number and "standard error" to 4 decimal places.)
b. What is the probability that the sample mean is less than 241? (Round “z” value to 2 decimal places, and final answer to 4 decimal places.)
c. What is the probability that the sample mean lies between 246 and 262? (Use rounded standard deviation. Round "z" value to 2 decimal places and final answer to 4 decimal places.)
Answers: 2
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A random sample of size n = 85 is taken from a finite population of size N = 479 with mean μ = 253 a...
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