# Question: Consider the observed frequency distribution for the following set of

Consider the observed frequency distribution for the following set of grouped random variables:

Random Variable, x Frequency, fo

Less than 80 ........ 10

80 to under 100 ....... 14

100 to under 120 ...... 19

120 and more ........ 7

Total ............ 50

Perform a chisquare test using α = 0.05 to determine if the observed frequencies follow the normal probability distribution with μ = 100 and σ = 20.

Random Variable, x Frequency, fo

Less than 80 ........ 10

80 to under 100 ....... 14

100 to under 120 ...... 19

120 and more ........ 7

Total ............ 50

Perform a chisquare test using α = 0.05 to determine if the observed frequencies follow the normal probability distribution with μ = 100 and σ = 20.

## Answer to relevant Questions

In 1991, the Consumer Bankruptcy Project conducted a study to determine the education levels of people who declare bankruptcy. The percentages are shown in the following table. Also shown in the table is the observed ...Suppose I gave my statistics class a four question, multiple choice quiz at the beginning of the semester to measure how well prepared they were for the class. The following table shows the number of students who had 0, 1, ...The following contingency table shows the distribution of grades earned by students taking a midterm exam in an MBA class, categorized by the number of hours the students spent studying for the exam: a. Using α = 0.05, ...Union membership, as a percentage of the working population, varies from country to country. A number of workers from different countries were randomly surveyed and asked whether they belonged to a union. The data from the ...Using the data from Problem 12.3, perform a chi square test using α = 0.05 to determine if the proportion of “Yes” observations differs among Populations A, B, and C. From ExercisePost your question