9 (3.22) The proportion of observations from a standard Normal distribution that take values greater than...
9. (3.22) The proportion of observations from a standard Normal distribution that take values greater than 1.47 is about 0.001)
The proportion of observations from a standard Normal distribution that take values greater than 1.68 is about (±0.001)
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...
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
3.19 Suppose the length o human pregnancies from conception to birth varies according to a distribution that is approximately Normal with mean 272 days and standard deviation 16 days. 95% o a pregnances last between 240 and 304 days wans3[6] ans216) (3.20) According to a study, the scale of scores on an TQ test of adults is approximately Normal with mean 98 and standard deviation 16. The organization MENSA, which calls itself "the high-IQ society," requires an IQ score of...
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
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.
The proportion of the observation from a Standard Normal Distribution that take values ggreater than 1.15 is about(a) 0.1251(b) 0.8531(c) 0.8729(d) 0.8749(e) 0.8770
14. (3.28) Find the proportion of observations (±0.0001) from a standard Normal distribution that falls in each of the following regions. In each case, sketch a standard Normal curve and sha the area representing the region. (a)z -2.33: (b)-2.33 (c)z 1.55 (d)-2.33 <z<1.55:
Find zz such that the proportion of observations that are less than zz in a standard normal distribution is 0.34.. (Enter your answer rounded to two decimal places.) Find zz such that 34%34% of all observations from a standard normal distribution are greater than z.z. (Enter your answer rounded to two decimal places.)