Run the appropriate hypothesis test to determine if the actual data is significantly different than a flat distribution of equal sales for each age group at the 0.05 significance level. state the p-value and summarize your results.
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
- Check to see if the number of sales for any age group is significantly different than the rest. You believe that each age group has the same percent of sales and that no sales are made to people over 59 years old.
Complete the table below.
|
Age group |
Claimed Percentages (answer) |
Actual number of sales |
|
0 to 19 |
1/5 = 0.20 |
22 |
|
20 to 29 |
1/5 = 0.20 |
34 |
|
30 to 39 |
1/5 = 0.20 |
30 |
|
40 to 49 |
1/5 = 0.20 |
26 |
|
50 to 59 |
1/5 = 0.20 |
20 |
Run the appropriate hypothesis test to determine if the actual data is significantly different than a flat distribution of equal sales for each age group at the 0.05 significance level. state the p-value and summarize your results.
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