Question

What is the mean air

capacity of a 20 year old farmworker who smokes 10 cigarettes per day?

What is the estimated difference in air capacity between two farmers of the same age, one of whom smokes 10 cigarettes per day, and the other of whom does not smoke?

Construct a 95% confidence interval for β5. [Note: In R you can get the upper 2.5'th percentile of the t distribution with m degrees of freedom, as qt(.975,m).

Use the Bonferroni procedure to construct simultaneous 95% confidence intervals for β5 and β0.

Construct a 95% confidence interval for the mean of Y , for a 30 year old chemical worker who does not smoke.

Construct a 95% prediction interval for the mean of Y , for a 30 year old chemical worker who does not smoke.

Construct a 95% confidence interval for β0 + β5.

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