1. More QUIZ REVIEW
1. A university wants to open application envelops to find TWO applicants with SAT scores over If scores have an average of 1500 with σ = 180, how many envelopes will they have to open on average. Simulate with 1 trials.
The population average score is 1500 (σ = 180). Assume Normality
(Round to the nearest whole number percent. )
Calculator - Seed 5->rand, and use randInt(0, 99)
First : Find P(X > 1800)
Normalcdf( , E99) = .047 = or 5%
Second: Assign:
Double digits: 00 – 04 = score over 1800.
05 – 99 = score under 1800.

2. More QUIZ REVIEW
2. Seven men and 3 women are being interviewed. If one is selected at random what is the probability it will be a women? Simulate using 20 runs (trials) using single digits and LINE 27. What is the Response Variable.?
Single digits: 0 – 6 = man
7 – 9 = woman
Line 27:
3/20 = .15
Response variable = If the selected person is a Women or NOT.

3. WARM – UP – QUIZ REVIEW
The population average mpg for SUV’s is mpg
(σ = 3.5mpg). (Assume Normality)
1. What is the probability that you will buy a random SUV that has more than 20 mpg?
First : Find P(X > 20)
Normalcdf(0.7723, E99) = or 22%

4. 3 out of 10 = 30% P(X > 20mpg) = 0.22 or 22%
2. Estimate the probability that after selecting 5 SUVs at least 2 of them get better than 20mpg. Use the same assignment from above but this time use the Calculator. (Seed 4->rand, and use randInt(0, 99,5) ) What constitutes a trial? Perform 10 trials.
P(X > 20mpg) = or 22%
Double digits: 00 – 21 = SUV gets better than 20 mpg.
22 – 99 = SUV NOT better than 20 mpg.
3 out of 10 = 30%

5. First : Find P(X > 20) Second: Assign:
The population average mpg for SUV’s is mpg (σ = 3.5mpg).
1. How many SUVs would you need to examine in order to find 4 with mpg greater than 20? Find this answer by finding the probability, Assigning digits, and Conducting a simulation by generating random digits using LINE 15 with one run. What is the Response variable?
First : Find P(X > 20)
Normalcdf(0.7723, E99) = or 22%
Second: Assign:
Double digits: 00 – 21 = SUV gets better than 20 mpg.
22 – 99 = SUV NOT better than 20 mpg.
Go to the Table of Random Digits line 15
Line 15:
It took 13 pair of double digits to reach 4 SUV’s with mpg > 20
The Response Variable is recording whether or not the SUV get 20 mpg.