1. ESP: For several years, the U.S. General Social Survey asked subjects, "How often have you felt as though you were felt you were in touch with or connected with someone when they were far away from you?" Of 3887 sampled subjects who had an opinion, 1407 said never and 2480 said at least once. a. Describe the population of interest. b. Calculate the descriptive statistics (sample proportions). c. What is the population parameter we want to draw conclusions about (make an inference about)? 2. Use critical thinking to develop an alternative conclusion. A study shows that the number of reported sexually transmitted diseases was significantly higher for high schools that offered courses in sex education than for high schools that did not. Conclusion: The introduction of sex education courses at the high school level has resulted in increased promiscuity among teens. 3. An engineer is designing a machine to manufacture gloves and she obtains the following sample of hand lengths (mm) of randomly selected adult males based on data gathered: 173 179 207 158 196 195 214 199 a. Define this data set as discrete or continuous. b. Hand lengths are what type of level of measurement? c. Compare the mean and median for this data set and if you can draw any conclusions from these values. 4. Explain the difference between stratified and cluster sampling. Why do you think that cluster sampling is frequently used in practice?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

1. ESP: For several years, the U.S. General Social Survey asked subjects, "How often have you felt as though you were felt you were in touch with or connected with someone when they were far away from you?" Of 3887 sampled subjects who had an opinion, 1407 said never and 2480 said at least once. a. Describe the population of interest. b. Calculate the descriptive statistics (sample proportions). c. What is the population parameter we want to draw conclusions about (make an inference about)? 2. Use critical thinking to develop an alternative conclusion. A study shows that the number of reported sexually transmitted diseases was significantly higher for high schools that offered courses in sex education than for high schools that did not. Conclusion: The introduction of sex education courses at the high school level has resulted in increased promiscuity among teens. 3. An engineer is designing a machine to manufacture gloves and she obtains the following sample of hand lengths (mm) of randomly selected adult males based on data gathered: 173 179 207 158 196 195 214 199 a. Define this data set as discrete or continuous. b. Hand lengths are what type of level of measurement? c. Compare the mean and median for this data set and if you can draw any conclusions from these values. 4. Explain the difference between stratified and cluster sampling. Why do you think that cluster sampling is frequently used in practice?

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

AI-Generated Solution

AI-generated content may present inaccurate or offensive content that does not represent bartleby’s views.