A
B
C
D
Random Trivia!
100
In a null hypothesis, the sign of the statement is always________.
=
100
When the P-Value is small enough, we say that________ to reject the null hypothesis.
we have evidence
100
We never _______ a null hypothesis; we either do or do not have evidence to reject it.
Accept
100

Always give your conclusion in ________.

context
100

Greta Gerwig's Barbie and Christopher Nolan's Oppenheimer both opened in theaters on July 21, 2023. What was the name of the meme that emerged in the weeks leading up to their release?

Barbenheimer

200
The probability of obtaining a sample statistic as extreme as the one obtained if the null hypothesis is assumed to be true is the ______.
P-Value
200
The alternative hypothesis is ___________ if there is interest in deviations from the null hypothesis in only one direction.
One-sided
200

What are the degrees of freedom for a test involving β?

df = n-2

200
Hypotheses are always about the _________, never about the sample.
population
200

What does "www" on a website link stand for?

World Wide Web

300

State all the model assumptions/conditions for a hypothesis test/confidence interval in linear regression.

Linearity, Independence, Normal Errors, Equal Variance

300

Given x = price and y = demand for a good, how would you describe Ho: β1 = 0 in words?

Price is not a significant useful predictor of demand for a good.

300

When performing a one-sided hypothesis test for β1, what do we do to the p-value provided in the JMP output?

Divide it by 2

300

A researcher wants to test whether there is a positive linear association between daily calorie intake and mile pace (in minutes) for athlete runners. What would be the null and alternative hypotheses for a test the researcher should do?

Ho: β1 = 0

Ha: β1 > 0

300

Why were the words "eras" and "renaissance" particularly relevant in 2023?

Taylor Swift and Beyonce (name of their tours)

400

Interpret the β1 = 0.1 for a situation wherein x = # of hours of sleep per day and y = GPA.

The true increase in mean GPA associated with a 1 hour increase in the number of hours of sleep per day is 0.1.

400

Interpret a β0 = 2 for a situation in which the researcher calculates a regression equation that involves caffeine intake (in mg) and the number of bathroom breaks in a day.

The true mean number of bathroom breaks in a day with a caffeine intake of 0 mg is 2.

400

Draw a diagram describing Ho: β1 = 0 and Ha: β1 > 0

-

400

Write down (on the board) the equations for the true regression model and the idealized regression line.

true regression model: y = β0 + β1x + ε

idealized regression line: μ y|x = β0 + β1x

400

How much more acute is a dog's sense of smell compared to humans? (will accept if you number is in the right range)

10,000 - 100,000 times!

500

Define the true regression coefficient β0.

The true mean of the response variable for individuals with a value of 0 for the explanatory variable.

500

Define t-score in words in the context of a hypothesis test for β1.

The approximate number of standard deviations that b1 is from 0 (the hypothesized value of β1).

500
What is the difference between the true regression model and the idealized regression line?

The true regression model is the model from which we can get multiple possible regression lines that attempt to explain the population. The idealized regression line is the average of all those lines.

500
One of the conditions/assumptions is Normal Errors. Draw a diagram on the board to explain and give us a mini lecture on what this means.
At any given value of x (explanatory var.), values of y (response var.) are normally distributed. 


(draw plot showing Normal curve for y-values at every x)

500

The unicorn is the national animal of which country?

Scotland!

M
e
n
u