Supposexhas a distribution with=12and=10

Why should you expect the probability of part (b) to be higher than that of part (a)? (Hint: Consider the standard deviations in parts (a) and (b).)

The standard deviation of part (b) is

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larger than

smaller than

the same as

part (a) because of the

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smaller

same

larger

sample size. Therefore, the distribution about_xis

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wider

narrower

the same

.