(a) Find ?z such that the proportion of observations that are less than ?z in a...

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(a) Find ?z such that the proportion of observations that are less than ?z in a...

(a) Find ?z such that the proportion of observations that are less than ?z in a standard normal distribution is 0.39.0.39. (Enter your answer rounded to two decimal places.)

Z=

(b) Find ?z such that 39%39% of all observations from a standard normal distribution are greater than ?.z. (Enter your answer rounded to two decimal places.)

Z=

math Statistics-And-Probability

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Answer 1

Answer #1

(a) Standard normal distribution table can be used to find out the value specified

The Z score below which proportion of observations is 0.39 = -0.28

(b) The Z score above which 39% of observations lie = The Z score below which (100 - 39) = 61% of observations lie

= The Z score below which proportion of observations is 0.61 = 0.28

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Answer 2

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(a) Find ?z such that the proportion of observations that are less than ?z in a...

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