Practice Exercise 24: Determining the Appropriate Analysis Could u please check

Question

Practice Exercise 24: Determining the Appropriate Analysis

Could u please check my answers and correct them?

For each of the following scenarios, identify the appropriate analysis.

1. To determine whether students represent five selected counties in roughly equal proportions, a university official randomly selects a group of 95 university students and finds that 60 of them came from the 5-county area. The distribution of the students across the five counties is given below.

The answer is : Simple analysis of variance.

2. Seventh-grade students have just completed a battery of tests, and administrators are interested in determining if there is a relationship between math and spelling scores. Twelve students were randomly selected and their scores were recorded.

The answer is : t-test for the significance of the correlation coffecient.

3. In a certain town, there are about one million eligible voters. A simple random sample of 10,000 eligible voters was chosen to study the relationship between sex and participation in the last election. The results are summarized in the following table:

The answer is : Test of independent chi-square test statistic.

4. A college counselor wonders whether second semester students take fewer units than first semester students. From the population of each group (first semester and second semester), she selects 10 students at random. The following data were collected:

First semester students: 10, 12, 14, 14, 15, 15, 15, 16, 16, 18

Second semester students: 6, 9, 9, 10, 12, 12, 13, 14

The answer is : t-test for the significant sample.

Explanation / Answer

1) test: chi sqaure test goodness of fit test

2) The answer is : t-test for the significance of the correlation coffecient.

3) The answer is : Test of independent chi-square test statistic.

4) The answer is : two independent sample t test for differnece of means.

please revert as first one seems wrong from your given answers as well it would be better if you provide the options given to you,

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.