One assumption that applies to any statistical tests is that the sample must be ______.

Group of answer choices

Uniform

Random

Large

Continuous

What type of display allows us to assess normality?

Group of answer choices

QQ Plot

Pie chart

Bar graph

Contingency table

We're trying to show that the true average exit velocity of batted balls in Major League Baseball is greater than 97 mph. What would our alternative hypothesis be?

Group of answer choices

Ha:>97

Ha: P >97%

Ha:<97

Ha:97

If we fail to reject the null, but the null is actually false, we've

Group of answer choices

Proved what we wanted to prove

Made a type I error

Found evidence that supports the alternative

Made a type II error

We can have equality in the alternative hypothesis

Group of answer choices

True

False

We're trying to show that the true average commute time for workers in the city of Chicago is less than 80 minutes. What would our alternative hypothesis be?

Group of answer choices

Ha:<80

Ha:P <80%

Ha:>80

Ha:80

The alternative hypothesis is

Group of answer choices

What we assume to be true

What we are trying to prove

What other research suggests

Always not equal to some value

We're trying to show that the true percent of Americans who recycle is greater than 45%. What would our alterative hypothesis be?

Group of answer choices

Ha: P >45%

Ha:P<45%

Ha:>45%

Ha: P45%

What is the relationship between the confidence level and the significance level?

Group of answer choices

There is no relationship

The confidence level is the significance level plus one

The significance level is the confidence level minus one

The confidence level is one minus the significance level

Sample size doesn't affect a confidence interval?

Group of answer choices

True

False