Stats 10 Final Review

The mean height for all NBA players is an example of which of the following?

P value is the prob of obtaining a t-statistic as extreme or more extreme than the observed t-stat, given H0 is false

Degree of freedoms is calculated as n-2

What is margin of error important for?

Is the following variable discrete or continuous: The number of "A"s Stats 10 students received

My null hypothesis is p = 0.1, my significant level is 0.03, my p value is 0.025. What conclusion should I make?

p in the formula below is...

How to make the interval narrower?

For a two sided test divide p-value by 2

The sample proportion is a biased estimator of the population proportion in a valid sample.

Accuracy measures how close the estimates are to one another. Precision measures how close center is from true parameter

The significance level is the probability that we made a...

What does the character represent

A normal distribution is

Is the following variable discrete or continuous: The temperature of Westwood this month

I failed to reject the null hypothesis when it was false. I made a....

A statistic is a numerical summary of a population

Standard deviation is a measure of precision

Simple Random Sampling ensures

This character represents population proportion

Z-score

Bias is a measure of an outcome not the process

bias can come from...

What test statistic should we use for hypothesis testing of proportions?

If we survey a subset in the population then we have a census

This formula is for calculating...

Hypotheses are statements about population parameter not about a statistic

28% of UCLA Students like Subway is a....

Which is true about a 90% confidence interval for a population proportion based on a given random sample?

This formula is used for...

What is not held true in a binomial model

The difference between CLT for hypothesis and mean is which condition?

If you convert all values to standard units, the mean will be 0 and the standard deviation 1.

Bias is a measure of the accuracy

Confidence intervals are about statistics not population parameters

If someone is in the pth percentile, then the relative proportion of people _________ to them is p