How do you compute df for the chi-square test for goodness of fit?
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A researcher selects a sample of 100 people to investigate t…
A researcher selects a sample of 100 people to investigate the relationship between gender (male/female) and registering to vote. The sample consists of 40 females, of whom 30 are registered voters, and 60 males, of whom 40 are registered voters. If these data were used for a chi-square test for independence, what is the expected frequency for registered females?
An analysis of variance is used to evaluate the mean differe…
An analysis of variance is used to evaluate the mean differences for a research study comparing four treatments with a separate sample of n = 8 in each treatment. If the data produce an F-ratio of F = 5.50, then which of the following is the correct statistical decision?
A recent study reports that elementary school students who w…
A recent study reports that elementary school students who were given a nutritious breakfast each morning had higher test scores than students who did not receive the breakfast. For this study, what is the independent variable?
A researcher performs a regular two-tailed test using α = .0…
A researcher performs a regular two-tailed test using α = .05 and rejects the null hypothesis. If the researcher used a directional (one-tailed) test with the same data, then what decision would be made? Hint: Think about how the critical region changes.
What is the value of the estimated standard error for the fo…
What is the value of the estimated standard error for the following set of D-scores?Scores: 2, 2, 10, 2
What is the value of ΣX + 1 for the following scores? Score…
What is the value of ΣX + 1 for the following scores? Scores 1, 0, 2, 4
How do you compute df for the chi-square test for goodness o…
How do you compute df for the chi-square test for goodness of fit?
An analysis of variance is used to evaluate the mean differe…
An analysis of variance is used to evaluate the mean differences for a research study comparing four treatments with a separate sample of n = 8 in each treatment. If the data produce an F-ratio of F = 5.50, then which of the following is the correct statistical decision?
A researcher selects a sample of 100 people to investigate t…
A researcher selects a sample of 100 people to investigate the relationship between gender (male/female) and registering to vote. The sample consists of 40 females, of whom 30 are registered voters, and 60 males, of whom 40 are registered voters. If these data were used for a chi-square test for independence, what is the observed frequency for registered males?