What is the distribution of the sample variances

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Problem 1: Samples of size n = 240 are randomly selected from the population of numbers (0 through 20) produced by a random-number generator, and the variance is found for each sample. What is the distribution of the sample variances?

Option 1: normal (approximately)

Option 2: skewed to the left

Option 3: skewed to the right

Option 4: not enough information provided

Problem 2: If z is a standard normal variable, find the probability.

The probability that z is greater than -1.82

Option 1: 0.4656

Option 2: 0.0344

Option 3: -0.0344

Option 4: 0.9656

Reference no: EM132723020

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