Chapter 10
... Dependent Sample Examples • The same test is given to all students at the beginning and end of a course to measure learning (one pair of scores per person). • IQ tests are given to husband & wife pairs. • A medical treatment is given to patients matched for condition, age, sex, race, weight, and ot ...
... Dependent Sample Examples • The same test is given to all students at the beginning and end of a course to measure learning (one pair of scores per person). • IQ tests are given to husband & wife pairs. • A medical treatment is given to patients matched for condition, age, sex, race, weight, and ot ...
HypothesisTesting2011
... p–value in hypothesis testing The probability of observing a sample value as extreme as, or mote extreme than, the value observed, given that the null hypothesis is true. •If p-value H0 is rejected
•If p-value>significance level => H0 is not rejected
•Gives us also additional ...
... p–value in hypothesis testing The probability of observing a sample value as extreme as, or mote extreme than, the value observed, given that the null hypothesis is true. •If p-value
Chapter 4 Statistical inferences
... the population parameter is likely to occur within that range at a specified probability. • Specified probability is called the level of confidence. • States how much confidence we have that this interval contains the true population parameter. The confidence level is denoted by (1-α)×100% • Example ...
... the population parameter is likely to occur within that range at a specified probability. • Specified probability is called the level of confidence. • States how much confidence we have that this interval contains the true population parameter. The confidence level is denoted by (1-α)×100% • Example ...
Chapter 9
... When the population standard deviation (σ) is unknown, the sample standard deviation (s) is used in ...
... When the population standard deviation (σ) is unknown, the sample standard deviation (s) is used in ...
1. The claim is that the proportion of women who use Internet
... b) Based on his theory of genetics, Mendel expected that 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not 25%, do the results contradict Mendel’s theory? Why or why not? The 95% confidence interval does not include 0.25, so this single experiment d ...
... b) Based on his theory of genetics, Mendel expected that 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not 25%, do the results contradict Mendel’s theory? Why or why not? The 95% confidence interval does not include 0.25, so this single experiment d ...
STATISTICS - SUMMARY - Michigan State University
... Note we could have rejected null hypothesis at .001 level here. WHAT HAVE WE DONE? We have used probability theory to determine the likelihood of obtaining a contingency table with a Chi square of 13.67 or greater given that there is no relationship between gender and IMUSE. If there is no relations ...
... Note we could have rejected null hypothesis at .001 level here. WHAT HAVE WE DONE? We have used probability theory to determine the likelihood of obtaining a contingency table with a Chi square of 13.67 or greater given that there is no relationship between gender and IMUSE. If there is no relations ...
Econ173_fa02FinalAnswers
... Do not reject the null hypothesis, the means are not different c. reject the null hypothesis, the means are not different d. Do not reject the null hypothesis, the mean of population 2 is greater. 38. If on the other hand, you do a one tailed test with H1: 1 > 2, and still obtain the same test sta ...
... Do not reject the null hypothesis, the means are not different c. reject the null hypothesis, the means are not different d. Do not reject the null hypothesis, the mean of population 2 is greater. 38. If on the other hand, you do a one tailed test with H1: 1 > 2, and still obtain the same test sta ...
ENGG2430A-Homework 5
... (b) What can we assert with 98% confidence about the possible size of our error if we estimate the mean height of all college students to be 174.5 centimeters? Solution: By the previous part, we can assert with 98% confidence that the error |x̄ − µ| is no larger than zα/2 √sn = 2.27. This is again b ...
... (b) What can we assert with 98% confidence about the possible size of our error if we estimate the mean height of all college students to be 174.5 centimeters? Solution: By the previous part, we can assert with 98% confidence that the error |x̄ − µ| is no larger than zα/2 √sn = 2.27. This is again b ...