The proportion of the observation from a Standard Normal Distribution that take...continues
The proportion of observations from a standard Normal distribution that take values greater than 1.15 is about(a) 0.1251(b) 0.8532(c) 0.8729(d) 0.8749(e) 0.8770
this three questions
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...
9 (3.22) The proportion of observations from a standard Normal distribution that take values greater than 1.58 is about 0.001) eBook 10 (3.22) The proportion of observations from a standard Normal distribution that take values less than-1.23 is about 0.0001) eBook
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. 2
The proportion of observations from a standard Normal distribution that take values greater than 1.68 is about (±0.001)
9. (3.22) The proportion of observations from a standard Normal distribution that take values greater than 1.47 is about 0.001)
3.23 The proportion of observations from a standard Nor- al distribution that take values between 1 and 2 is about (a) 0.025. (b) 0.135. (c) 0.160.
Standard Normal distribution.
With regards to a standard normal distribution complete the following: (a) Find P(Z > 0), the proportion of the standard normal distribution above the z-score of 0. (b) Find P(Z <-0.75), the proportion of the standard normal distribution below the Z-score of -0.75 (c) Find P(-1.15<z <2.04). (d) Find P(Z > -1.25). (e) Find the Z-score corresponding to Pso, the 90th percentile value.
21) (8 points) The Z-score for an observation from a Normal distribution is -0.4. For the following, choose the one answer that is most appropriate. a. The observation is Left of the mean Right of the mean Very close to the mean It cannot be determined without knowing the mean and standard deviation b. Observations smaller than this value comprise The majority of the distribution Slightly less than half of the values in the distribution Unusually large observations It cannot...
What is the approximate probability that in a normal distribution an observation is a) more than 2 standard deviations greater than the mean, b) more than 1 standard deviation below the mean, c) greater than 3 standard deviations away from the mean, d) and within 2 standard deviations of the mean?