**Educational Website Content: Confidence and Prediction Intervals** **Understanding Intervals for an Explanatory Variable** Two intervals are provided, A and B, for the same value of an explanatory variable: - Interval A: 1 to 19 - Interval B: 7 to 13 **Questions:** (a) Which interval is the confidence interval for the mean response? (b) Which interval is the prediction interval for the response? **Further Inquiry:** (b) What is the predicted value of the response variable for this specific value of the explanatory variable? - Enter the exact answer in the provided box. The predicted value is: [Input Box] **Study Material:** - Access eTextbook and Media for reference. **Additional Help:** - A hint is available for those who need guidance. **Note:** You can save your progress to continue later. Attempts remaining: 0 of 3.

Suppose you find that the 95% confidence interval for the cost of a wedding is ($29,000, $35,000). What is the correct interpretation of this interval? Group of answer choices For the next wedding you attend, the cost will be between $29,000 and $35,000. There is a 95% probability that the sample mean is between $29,000 and $35,000. There is a 95% probability that the population mean is between $29,000 and $35,000. You are 95% confident that the mean wedding cost is between $29,000 and $35,000. thanks

Trainers at a dog training facility find want to know how successful their recently updated program is. They randomly select 250 owners with dogs who went through the program and ask if they consider their dog well- behaved; 100 say yes. If the trainers want a margin of error of around 4%, which of the confidence levels below should they use? O 98% O 90% O 99% O 95% o o

Construct a 95% confidence interval for p1 - p2 for a survey that finds 30% of 240 males and 41% of 200 females are opposed to the death penalty. Group of answer choices a.(-0.200, -0.021) b.(-1.532, 1.342) c.(-1.324, 1.512) d.(-0.561, 0.651)

Two intervals are given, A and B, for the same value of the explanatory variable. A: 16.3 to 22.1; B: 17.8 to 20.6; (a) Which interval is the confidence interval for the mean response? B Which interval is the prediction interval for the response? A (b) What is the predicted value of the response variable for this value of the explanatory variable? Enter the exact answer.

I sampled 10 downtown Chicago restaurants for the price of their most expensive meal on the menu. Here are the prices: $45, $80, $70, $70, $60, $65, $80, $60, $50, $90 Construct a 99% confidence interval for the mean price of the most expensive meal at a downtown Chicago restaurant. Assume the population is approximately normal. Write a sentence using that confidence interval   Using the values in the previous question, compute a 95% confidence interval for the standard deviation of the most expensive price for a mean in downtown Chicago.

What is the effect on the size of the confidence interval if a T score is used instead of a Z score? O It causes the interval to be smaller. O It has no effect on the interval. O It causes the interval to be bigger.

The Confidence Interval: A. Does not include, or B. Includes   So the means before and after the treatment: A. Are different, or B. Could be the same   This result suggests that the drug treatment: A. Does not have, or B. has

A. Find the sample meanB. Find the sample standard deviation  C. Construct a 98% confidence interval for the population mean(please show what numbers you are putting into the formula for part b)

Which interval is wider: (a) the 95% confidence interval for the conditional mean of the response variable at a particular set of values of the predictor variables or (b) the 95% prediction interval for the response variable at the same set of values of the predictor variables?