In a normal distribution, it is ______________ to observe a standard score at or

ID: 2947920 • Letter: I

Question

In a normal distribution, it is ______________ to observe a standard score at or near __________.

very likely; -6

very unlikely; -9

very likely; 0

relatively unlikely; -3

If the standard deviation of variable y equals 7.81 and the standard error of the estimate equals 0.09, which of the following is most likely:

r = -0.97

r = 2.43

r = -1.7

r = 0.14

If 6 items were selected from a set of 12 items, there would be 924 possible combinations. How many permutations would there be?

924 divided by 12!

To use the binomial distribution, the probabilities of each possible outcome must

be greater than 10.

less than 10

The magnitude of the correlation coefficient is indexed by its:

absolute value

When the population standard deviation is unknown, the ____________ can be used instead.

population variance

Which of the following is an unbiased estimator of the population variance?

The sampling distribution of the mean can be generated by drawing random samples of _____________ and forming a frequency distribution of all means.

very unlikely; 0

Answer 1

we know that using z normal distribution, approximately 99.9% values falls within 4 standard deviations of the mean,

so, getting a score of -9 is very unlikely

option C is correct

In a normal distribution, it is ______unlikely ________ to observe a standard score at or near ___-9_______.

Score of 0 mean, so we can neglect option a and d

option b is telling us about score -6 which very unlikely, but option b is saying likely for -6, thats why it is incorrect option

option e is saying relatively unlikely for a score of -3, which is likely because we can easily observe standard deviation within 3 deviations.

so, option e is also incorrect

Thus, option C is only possible correct answer

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