(a) Recollect: In "old age sticks," what actions do old age and youth take? (b) Differentiate: Discuss the differences Cummings points out between youth and old age.

Define simple random sampling.

What is the fundamental purpose of sampling?

Determine whether the statement is true or false. If the statement is false, rewrite it as a true statement.

Both stratified sampling and cluster sampling divide the population into groups.

For questions define the sampling value.

Write an equation for each statement. Tanya’s age t is three times Martin’s age m.

Statistical process control and acceptance sampling both rely on a sampling of products to make inferences. In what important way do the types of inferences differ?

Correct the sentences below by replacing the italicized term with the correct vocabulary term. Judgment involves positive comments that point out problems and encourage improvement.

Describe the sampling distribution of p hat.

Which of the following could be different if two different sets of samples of 900 children are taken? Explain. The value of the mean of the sampling distribution of

$$\hat{p}_1 - \hat{p}_2.$$

The approximate shape of the sampling distribution of

$$\hat{p}_1 - \hat{p}_2$$

The standard deviation of the sampling distribution of

$$\hat{p}_1 - \hat{p}_2$$

The standard error of the sampling distribution of

$$\hat{p}_1 - \hat{p}_2$$

The accompanying figure shows the graph of the height h in centimeters versus the age t in years of an individual from birth to age 20 . Estimate the growth rate at age 5 .

Select the best answer. Which of the following statements about the sampling distribution of the sample mean is incorrect? (a) The standard deviation of the sampling distribution will decrease as the sample size increases. (b) The standard deviation of the sampling distribution is a measure of the variability of the sample mean among repeated samples. (c) The sample mean is an unbiased estimator of the population mean. (d) The sampling distribution shows how the sample mean will vary in repeated samples. (e) The sampling distribution shows how the sample was distributed around the sample mean.

Compare the age of Earth and our solar system to the age of the most distant galaxies. [1]

The percentage of licensed U.S. drivers (from a recent year) that are female is $48.60$. Of the females, $5.03 \%$ are age 19 and under; $81.36 \%$ are age $20-64 ; 13.61 \%$ are age 65 or over. Of the licensed U.S. male drivers, $5.04 \%$ are age 19 and under; $81.43 \%$ are age $20-64 ; 13.53 \%$ are age 65 or over.

Complete the following.

Are being aged 65 or over and being female mutually exclusive events? How do you know?