this three questions 3.22 The proportion of observations from a standard Normal distribution that take values...

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3.22 The proportion of observations from a standard Normal distribution that take values greater than 1.78 is about (a) 0.9554. (b) 0.0446. (c) 0.0375. The proportion of observations from a standard Normal distribution that take values between 1 and 2 is about (a) 0.025. (b) 0.135. (c) 0.160. The scores of adults on an IQ test are approximately Normal with mean 100 and standard deviation 15 Alysha scores 135 on such a test. She scores higher than what percent of all adults? (a) About 5% (b) About 95% (c) About 99% 3.23 3.24

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3.2 2 > He have to find p(x > 1.78): using standard Norual table Px71.78)0.0375 e have to ind P(3 = 0577-0.812 using Shandardnimeltable 29) Let , X-The score ot adults on an JO tast. .napproximattly normal (AS 100, 3 52) Je have to ind 13S-100P 2 2:5332 0.91 sha Scores abou

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The proportion of observations from a standard Normal distribution that take values greater than 1.78 is...

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