STAT 1000 Final: STAT1000, Final
17 Sep 2018
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Unit 8 - confidence intervals for a population. Unit 5 - density curves and normal distributions. If x n ( , ), then to transform it to a standard normal visible x n (0, 1). , the numerator tells us how far x is from and the denominator divides that distance into standard deviations. So z is in fact a measure of how many standard deviations x is from . Z is the measure of how far we are from the: tve z score means that many above , -ve z score means that many below . Example 1. x = bread length x n ( = 30, = 2) Table = number of the outside is the z score number inside is the proportion/area to the left the table. Any z values less than 3. 49 0. Any z values greater than 3. 49 1.
