H Stats Units 5-9 Review (for 3rd 6 weeks test review)

Front

What is the estimated probability that Anthony makes par on his next hole if he made par or better on 32 out of 80 holes?

Back

0.40

Front

In a Venn diagram showing students who own cats and/or dogs, how do you calculate the probability that a randomly selected student owns neither?

Back

Subtract the probability of owning a cat or dog from 1.

Front

What is the difference between a parameter and a statistic?

Back

A parameter is a numerical value summarizing a characteristic of a population, while a statistic is a numerical value summarizing a characteristic of a sample.

Front

If a table shows the number of cell phones per household, how do you find the probability that a randomly selected household does NOT have 4 cell phones?

Back

Calculate 1 minus the probability of having 4 cell phones.

Front

What does a P-value of 0.04 indicate in hypothesis testing at α = 0.05?

Back

It indicates that there is sufficient evidence to reject the null hypothesis.

Front

Define 'probability'.

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is a null hypothesis (H0)?

Back

A null hypothesis is a statement that there is no effect or no difference, and it serves as the default assumption in hypothesis testing.

Front

What is an alternative hypothesis (Ha)?

Back

An alternative hypothesis is a statement that indicates the presence of an effect or a difference, opposing the null hypothesis.

Front

How do you interpret a sample mean in the context of a population?

Back

The sample mean provides an estimate of the population mean based on the data collected from a sample.

Front

What is the significance level (α) in hypothesis testing?

Back

The significance level is the threshold for determining whether to reject the null hypothesis, commonly set at 0.05.