Chi square test of independence and ANOVA
Not what you're looking for?
See attached file for full problem description.
1. A teacher figures that final grades in the statistics department are distributed as A-25%, B-25%, C-40%, D-5%, and F-5%. At the end of a randomly selected semester, the following number of grades were recorded. Determine if the grade distribution for the department is different than expected. Use  = 0.01.
Grade A B C D F
Number 42 36 60 14 8
2. The contingency table below shows the results of a random sample of 200 state representatives that was conducted to see whether their opinions on a bill are related to party affiliation.
Party Approve Disapprove No Opinion
Republican 42 20 14
Democrat 50 24 18
Independent 10 16 6
3. Find the critical value of F to test the claim that . Two samples are randomly selected form populations that are normal. The sample statistics are given below. Use  = 0.05.
= 16, s = 8.41; = 15, s = 7.84
4. At a college, 61 female students were randomly selected and it was found that their monthly income had a standard deviation of $133.65. For 121 male students the standard deviation was $185.57. Test the claim that the variance of monthly incomes is higher for male students that it is for female students. Use  = 0.05
5. Four different types of fertilizers are used on raspberry plants. The number of raspberries on each randomly selected plant is given below. Find the test statistic F to test the claim that the type of fertilizer makes no difference in the mean number of raspberries. Use  = .05
Fertilizer 1 Fertilizer 2 Fertilizer 3 Fertilizer 4
6 5 6 3
7 8 3 5
5 5 4 3
6 5 2 4
7 5 3 4
6 6 3 5
Purchase this Solution
Solution Summary
The solution gives detailed steps of ANOVA, Chi-square, and f test. Null hypothesis, alternative hypothesis, critical Value, p value and test statistics are given with interpretation.
Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.