Z = (x - mean) / SD
Z = -1.8
Or, (x - mean) / SD = -1.8
Or, (x - 5) / 2.2 = -1.8
Or, x = 1.04
suppose x~N(5,2.1). what x- value is 1.8 standard deviations to the left of the mean? round...
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Suppose that the mean value of interpupillary distance (the distance between the pupils of the left and right eyes) for adult males is 65 mm and that the population standard deviation is 5 mm. (a) If the distribution of interpupillary distance is normal and a random sample of n = 25 adult males is to be selected, what is the probability that the sample mean distance x for these 25 will be between 64 and 66 mm? (Round all your...
Suppose that the mean value of interpupillary distance (the distance between the pupils of the left and right eyes) for adult males is 65 mm and that the population standard deviation is 5 mm. (a) If the distribution of interpupillary distance is normal and a random sample of n = 25 adult males is to be selected, what is the probability that the sample mean distance x for these 25 will be between 64 and 67 mm? (Round all your...
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