Nothing to See here... Everything is Normal
Pythagoreas Was Right!
Potent Potables
A Test of the Emergency Cram System
Bi- Bi- Love
100
It's the z-score for an elephant that weighs 7256 kg taken from the population of all African Elephants that have a mean of 9500 kg and a standard deviation of 1500 kg.
What is z = -1.50?
100
Foster Farms Chickens have weights normally distributed with a mean of 1.9 lb and a standard deviation of 0.4 lb. Tyson Chickens have weights also normally distributed with a mean of 2.1 lb and a standard deviation of 0.3 lb. It's the variance when one Foster Farms Chicken and one Tyson chicken are pulled at random.
What is 0.25 square pounds?
100
We are trying to estimate the proportion of people who prefer Pepsi products over Coke products. We sample 70 people and find that 32 preferred the Pepsi product. It is the interval that estimates the true proportion of people who prefer Pepsi to 90% confidence.
What is (0.35921 , 0.55508)?
100
It's the test statistic for a one-sample proportion hypothesis test of Ho: p = 0.43 vs. Ha: p < 0.43 with a test sample p-hat of 36/100.
What is z = -1.414?
100
It is the solution to the following binomial distribution
What is 0.324135?
200
A standardized test has scores that follow a Normal distribution with a mean of 500 and a standard deviation of 100. It's the proportion of students that score less than 630.
What is 0.9032?
200
Box 1 has a standard deviation of 4.3 oz
Box 2 has a standard deviation of 5.4 oz
It is the total standard deviation of the two boxes combined.
What is approximately 6.90 oz?
200
An economist models the relationship between the number of years since a city implemented a new housing policy (x) and the median monthly rent (in hundreds of dollars) using the least squares regression line:
ŷ = 9.5 + 0.6x
In one city, x = 10 years, and the residual is -0.2.
This is the actual median monthly rent (in hundreds of dollars) in that city?
What is 15.3 (or $1530)?
200
It’s the p-value for a paired t-test with H₀: μ_d = 0 vs. Hₐ: μ_d ≠ 0. A sample of 10 students had a mean score difference of −2.4 points (after − before), with a standard deviation of 3.1.
What is p = 0.0369?
200
It's the probability of selecting exactly 12 out of 20 MHS Seniors that have a Job if the probability of Senior having a job is 0.45.
What is 0.0727?
300
The diameter of a bolt produced in a factory is Normally distributed with a mean of 1.20 cm and a standard deviation of 0.05 cm.
It is the probability that a randomly selected bolt has a diameter greater than 1.27 cm.
What is 0.0808?
300
MHS men have a mean height of 70 inches and a standard deviation of 4 inches. MHS women have a mean height of 66 inches and a standard deviation of 3 inches. 2 Men and 2 Women are grabbed at random. It is the total standard deviation of the four MHS students combined.
What is approximately 7.07 inches?
300
A blood donation center receives donations from two sources:
65% of donations come from walk-in donors, and 35% come from scheduled appointments.
6% of walk-in donations are rejected due to screening issues.
2% of scheduled donations are rejected due to screening issues.
A donation is selected at random from the day's records.
This is the probability it came from a walk-in donor, If the donation was rejected.
What is 0.8478?
300
It’s the test statistic for a one-sample t-test with H₀: μ = 120 vs. Hₐ: μ > 120, based on a sample of n = 10, x̄ = 125, and s = 5.8.
What is t = 2.7261?
300
It's the probability of selecting 8 or less people out of a group of 10 who are right handed when the probability of a person selected at random who is right handed is 0.90.
What is 0.2639?
400
IQ Scores are Normally Distributed with a mean of 100 and a standard deviation of 15. It's the proportion of people have IQ scores between 92 and 102.
What is 0.2561?
400
If the following is true:
Eggs have a mean of 60 grams and a standard deviation of 5 grams
Canadian Bacon has a mean of 15 grams and a standard deviation of 2 grams
English Muffin has a mean of 50 grams and a standard deviation of 3 grams
It is the mean and standard deviation of an Egg McMuffin (One of each).
What is a mean of 125 grams and a sandard deviation of approximately 6.16 grams?
400
The Associated Press wants to ask people who they prefer for the next upcoming national election to a margin of error of 3.9% to 95% confidence. It's how many people must they survey?
What is 632 people?
400
It’s the p-value for a two-sample t-test to determine if students who sleep at least 8 hours perform better on a memory test than students who sleep less than 6 hours. In a random sample, the 8-hour group (n = 18) had an average score of 25.1 with a standard deviation of 4.6, while the <6-hour group (n = 20) had an average score of 22.5 with a standard deviation of 4.9.
What is p = 0.0502?
400
It is the solution of the following problem.
What is 0.3222?
500
It's the z-scores that will grab the middle 72% of your data.
What is z* = +/- 1.08?
500
The standard deviation of two cantaloupes pulled from the same population of cantaloupes has a total standard deviation of 6.4 ounces. It is the standard deviation of an individual cantaloupe.
What is 4.525 oz?
500
Jim and Tim play darts to 501 total points. Jim typically will score an average of 450 points with a standard deviation of 12 points. Tim will score an average of 440 points with a standard deviation of 16 points. It's the probability that Tim outscores Jim in a random game.
What is 0.3085?
500
It’s the p-value for a two-proportion z-test with H₀: p₁ = p₂ vs. Hₐ: p₁ ≠ p₂, based on independent samples where group 1 has 56 successes out of 120 and group 2 has 64 successes out of 140.
What is p= 0.8770?
500
The probability of selecting a person at random and they like the Major League Baseball is 0.3. It is the probability that you will select 1 or more people out of 5 that like the professional baseball.
What is 0.83193?