Show:
Introduction to Normal Distribution and Standard Normal Distribution
Normal Distributions: Finding Probabilities
Normal Distribution: Finding Values
Sampling Distributions and the Central Limit Theorem
Potpourri
100

Find the area to the left of z = 1.56

.9406

100

This is the process that standardizes data to make it easy to find probabilities.

What is find a z-score

100

Use the standard normal table to find the z-score that corresponds to a cumulative area of 0.94

What is 1.55 or 1.56

100
What is a probability distribution of a statistic obtained through a large number of samples drawn from a specific population?
What is Sampling Distribution
100

This ocean is south of Australia

What is the Southern Ocean

200

The mean of the standard normal distribution is this.

What is 0

200

A W.H.O. study in Canada found systolic blood pressure readings to be normally distributed with a mean of 121 & std. dev. of 16. High blood pressure is a reading above 140. This is the z-score at 140.

What is 1.19

200

This z score corresponds to P27

What is -0.61

200
What is a statistical measure that quantifies the distance (measured in standard deviations) a data point is from the mean of a data set?
What is z-score
200

Name the governor of Massachusetts

Who is Charlie Baker

300
Find the indicated area under the standard normal curve to the right of z= 1.28
What is 0.1003
300
In 1999, the murder rates (per 100,000 residents) for the 50 states and D.C. had a mean of 5.9 and std. dev. of 6.3. D.C. had a murder rate pf 46.4. Find the z-score.
What is 6.43
300
Find the z-score that has 11.9% of the distributions are to it's right.
What is 1.18
300

What is the standard deviation of the sampling distribution?

standard error  or SD/-\/N

300

Name a country in South America

Vary
400
Find the indicated area under the standard normal curve between z=-1.96 and z=1.96
What is 0.95
400

Birth weights of babies in the US are normally distributed with a mean of 7.47 pounds and a SD of 1.21 pound. This is the probability a randomly chosen newborn weighs 9 pounds or more.

What is .1038 or .1030

400

10.56% of flights from New York to LA arrive "early". Flight times are normally distributed with a mean time of 6 hours and 25 minutes and SD of 15 minutes. What is the cutoff time for a flight to be considered "early"?

(Answer in terms of hours and minutes)

What is 6 hours and 6 minutes.

400

Sample sizes of 30 or more and this satisfy the central limit theorem for normal sampling distributions

What is a normal population

400

What teacher used to teach in this very classroom

Who is Gibeau

500

When analyzing a normal distribution, these points are always one standard deviation away from the mean.

What are inflection points.

500

Heights of NBA players are normally distributed with a mean of 6'7" and a standard deviation of 3.8". This is the probability a player is between 6' and 6'6".

What is .3635

500

When selecting cheerleaders for mat, the coach unfairly and automatically eliminates girls who are in the top and bottom 25% of heights, according to her team's normally distributed heights. The mean height of girls on the team is 5'3" (63 inches) and SD is 2.5 inches. What should be coaches cutoff heights? (Round to the nearest tenth of an inch)

61.3" and 64.7"   or    5'1.3" and 5'4.7"

500

Speeds on route 24 are normally distributed with a mean of 74 mph and SD or 4.5 mph. If samples of 40 cars are taken, what is the probability that the mean speed will be greater than 75 mph 

.0799

500

What did I have for breakfast this morning? Name anything...

Vary