CP Stats Quiz Normal Model Cohort A Name: Make sure to list the values and the percentages in the model below:
I
2. The Postmaster of a city's Post Office believes that a Normal model is useful in projecting the
number of letters which will be mailed during the day. They use a mean of 20,000 letters and a
standard deviation of 250 letters. Draw and clearly label this model.
From the Model in #1, what percent of days would you expect to be:
2. Below 19,500 letters
3. Between 20,000 and 20,750
4. Above 20,250 letters
5. Use Z-Scores to determine the solution:

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

the answer is ! ?

answer: #1 ads up by 8 and i don't know #2