2. A Bootstrap Dotplot with 1000 samples for the correlation between commute time and commutedistance in Atlanta is shown below. Find a 99% confidence interval by hand, using the percentilesmethod.4030201000.65Left Tall Two Tailight Taila. Howmany0.700.750.80dots did you count in each tail?b. Give your confidence interval here:c. Interpret the confidence interval in context.0.85samples-10000.90

This dot plot represents the relationship between the commute time and the commute distance in…

Answered: 2. A Bootstrap Dotplot with 1000…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose you are interested in studying regional differences in crime rates. You take a random sample of 100 cities in the South, and find a mean crime rate of 55 with a sample variance of 5.78. A sample of 100 cities in the North has a mean crime rate of 50 with a sample variance of 6.72. Construct a 95% confidence interval around the difference in crime rates between the population of Southern cities and the population of Northern cities. Interpret, in words, the meaning of this interval.
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Prof. Lopez wants to know whether type of the exam formats will impact on student’s final exam by ask a group of students taking the final exam with paper format and another group of students taking the same exam with computer format. a. Repeated measure t test b. One way ANOVA c. Independent- measures t test d. Correlation
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10. Several years ago, 51% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,075 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,075 surveyed, 472 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. What are the null and alternative hypotheses? Ho: p (1) versus H1: p (2) (Round to two decimal places as needed.) Use technology to find the 99% confidence interval. The lower bound is The upper bound is (Round to two decimal places as needed.) What is the correct conclusion? O A. Since the interval contains the proportion stated in the null hypothesis, there is insufficient evidence that parents' att O B. Since the interval contains the proportion stated in the null hypothesis, there is sufficient…
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2. A Bootstrap Dotplot with 1000 samples for the correlation between commute time and commute distance in Atlanta is shown below. Find a 99% confidence interval by hand, using the percentiles method.