Chapter 6 Section 2
... case. Be sure to identify the parameters that you use to state the hypotheses. (a) A university gives credit in French language courses to students who pass a placement test. The language department wants to know if students who get credit in this way differ in their understanding of spoken French f ...
... case. Be sure to identify the parameters that you use to state the hypotheses. (a) A university gives credit in French language courses to students who pass a placement test. The language department wants to know if students who get credit in this way differ in their understanding of spoken French f ...
Solutions to Homework 9
... (a) This compares two proportions (one brand of cola vs the other brand) drawn from the same group (tasters). The methods of this section do not apply to this type of difference in proportions. (b) This compares the proportion who voted using two different groups (males vs females). The methods of t ...
... (a) This compares two proportions (one brand of cola vs the other brand) drawn from the same group (tasters). The methods of this section do not apply to this type of difference in proportions. (b) This compares the proportion who voted using two different groups (males vs females). The methods of t ...
Chapter 4 File
... • X is randomly assigned to people (students randomly assigned to different size classes; patients randomly assigned to medical treatments). Randomization is done by computer – using no information about the individual. • Because X is assigned randomly, all other individual characteristics – the thi ...
... • X is randomly assigned to people (students randomly assigned to different size classes; patients randomly assigned to medical treatments). Randomization is done by computer – using no information about the individual. • Because X is assigned randomly, all other individual characteristics – the thi ...
interval estimate
... The sampling distribution of p plays a key role in computing the margin of error for this interval estimate. The sampling distribution of p can be approximated by a normal distribution whenever np > 5 and n(1 – p) > 5. ...
... The sampling distribution of p plays a key role in computing the margin of error for this interval estimate. The sampling distribution of p can be approximated by a normal distribution whenever np > 5 and n(1 – p) > 5. ...
Statistical Methods MT2007 Analysis of Sampling Plans
... Our notation follows Thompson (1997) most closely. Suppose we have a finite population U of N units, with (possibly a vector of) measurements yj , and we are interested in population mean µ or total T . A sample is a subset s of U. A sampling plan or (probability) sampling design is then a probabili ...
... Our notation follows Thompson (1997) most closely. Suppose we have a finite population U of N units, with (possibly a vector of) measurements yj , and we are interested in population mean µ or total T . A sample is a subset s of U. A sampling plan or (probability) sampling design is then a probabili ...
sampling distribution model
... we know that 95% of Normally distributed values are within two standard deviations of the mean. So we should not be surprised if 95% of various polls gave results that were near the mean but varied above and below that by no more than two standard deviations. This is what we mean by sampling error. ...
... we know that 95% of Normally distributed values are within two standard deviations of the mean. So we should not be surprised if 95% of various polls gave results that were near the mean but varied above and below that by no more than two standard deviations. This is what we mean by sampling error. ...
Math 1181 Exam 1 Name: 1. Which of the following is a valid
... _______ is a categorical variable in the Smartfood study while _________ is a quantitative variable. Which choice correctly fills in the blanks? (a) the 50 participants; the test score for each participant (b) the test score for each participant; the average score of the participants who received Sm ...
... _______ is a categorical variable in the Smartfood study while _________ is a quantitative variable. Which choice correctly fills in the blanks? (a) the 50 participants; the test score for each participant (b) the test score for each participant; the average score of the participants who received Sm ...
Study Guide
... c) In a short paragraph, describe how inferential statistics are used in the social sciences. Make sure to mention the following terms: hypothesis testing, critical value, p-value, and effect size. In the social sciences, researchers test their hypotheses or predictions by studying samples and then ...
... c) In a short paragraph, describe how inferential statistics are used in the social sciences. Make sure to mention the following terms: hypothesis testing, critical value, p-value, and effect size. In the social sciences, researchers test their hypotheses or predictions by studying samples and then ...
