Video A population has a mean of 200 and a standard deviation of 90. Suppose a sample of size 100 is selected and 2 is used to estimate u. Use z-table. a. What is the probabity that the sample mean will be within +/- 6 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.) b. What is the probability that the sample mean will be within +/-14 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.)

Q: Suppose a variable x has population mean µ = 38.23 and standard deviation o = 2.78. Determine the…

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A: given that  n=86 mean=90

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A: According to the provided information, Sample size (n) = 225 Probability (p) = 0.73

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A: The sample variance of data is given by:

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