I have not received my text book yet please help. The Normal Probability Distrib
ID: 3020946 • Letter: I
Question
I have not received my text book yet please help.
The Normal Probability Distribution:
In §6.2 we are introduced to the Normal Probability Distribution and the special case of the Normal Probability Distribution, the Standard Normal Probability Distribution, which is a Normal Probability Distribution with mean (u) zero and variance (2) one.
One way to find probabilities from a Standard Normal Distribution is to use probability tables, which are located inside the front cover of your textbook.
According to the table, what is the probability when z -1.75? The probability when z 1.75?
What properties of probability distributions and specifically the Normal Probability Distribution do you notice from the two probabilities that you have found in the table?
Explanation / Answer
I am not using the table specified in the text book, but i used the same z tables , there is not much difference in numbers except the rounded off margin.
The probability when z 1.75 is 0.9599
What properties of probability distributions and specifically the Normal Probability Distribution do you notice from the two probabilities that you have found in the table?
Normal probabilities are symmetrical. i.e Probability of a value less than x
Probability increases from - 3 to to 0 and start decreasing to +3
The mean is at the middle and it divides its into two halves.