Treatment 1: 20 19 29 25 34 32 39 38 Treatment 2: 18 18 16 17 29 28 21 37 Construct a 90% confidence interval for the difference in

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Use the given set of points to construct a 95% confidence interval for β1. No need to interpret the results.  x 9 6 5 9 6 12 17 11 y 25 18 15 21 21 28 30 24

Several years​ ago, 45​% of parents who had children in grades​ K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,025 parents who have children in grades​ K-12 if they were satisfied with the quality of education the students receive. Of the 1,025 ​surveyed, 484 indicated that they were satisfied. Construct a 99​% confidence interval to assess whether this represents evidence that​ parents' attitudes toward the quality of education have changed.

Fast reactions: In a study of reaction times, the time to respond to a visual stimulus x and the time to respond to an auditory stimulus y were recorded for each of 8 subjects. Times were measured in thousandths of a second. The results are presented in the following table. The results are presented in the following table. Visual Auditory 161 159 176 163 178 201 188 193 191 169 211 189 235 241 228 209 Construct a 95% confidence interval for the slope. Round the answers to at least four decimal places.

A clinical trial is conducted comparing a new pain reliever for arthritis to a placebo. Participants are randomly assigned to receive the new medication or a placebo. The outcome is pain relief within 30 minutes.  Generate a 95% confidence interval for the proportion of patients on the new medication who report paint relief. Generate a 95% confidence interval for the difference in proportions of patients who report pain relief. Pain Relief       No Pain Relief New Medication 44   76 Placebo 21 99

Summary statistics for Chol: (a)  Calculate a 95% confidence interval (Chapter 17) for the mean Cholesterol of heart disease patients.  Use the t-distribution table and the Cholesterol summary statistics.Group by: HD HD n Mean Variance Std. dev. Std. err. Median Range Min Max Q1 Q3 No 164 242.64024 2857.606 53.45658 4.1742576 234.5 438 126 564 208.5 267.5 Yes 139 251.47482 2448.9468 49.486835 4.1974185 249 278 131 409 217 284

Breathing rates, in breaths per minute, were measured for a group of 10 subjects at rest, and then during moderate exercise. The results were as follows: Subject Rest Exercise 15 30 2 16 37 3 21 39 4 17 37 5 18 40 6 15 39 19 34 21 40 18 38 10 14 34 Find a 95% confidence interval for the increase in breathing rate due to exercise.

A study was conducted to measure the effectiveness of hypnotism in reducing pain. The measurements are centimeters on a pain scale before and after hypnosis. Assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal. Construct a 95% confidence interval for the mean of the "before-after" differences. Does hypnotism appear to be effective in reducing pain? Before After 6.3 6.8 2.4 7.3 11.8 8.3 7.5 3.4 5.4 2.3 7.9 8.6 8.1 6.3 3.3 2.7 Construct a 95% confidence interval for the mean of the "before after" differences. H(Round to two decimal places as needed.)