question archive An analyst at a local bank wonders if the age distribution of customers coming for service at his branch in town is the same as at a branch located near the mall
An analyst at a local bank wonders if the age distribution of customers coming for service at his branch in town is the same as at a branch located near the mall
Subject:StatisticsPrice: Bought3
An analyst at a local bank wonders if the age distribution of customers coming for service at his branch in town is the same as at a branch located near the mall. He selects 100 transactions at random from each branch and researches the age information for the associated customer. These are the data :
| Age | ||||
| less than 30 | 30-55 | 56 or older | Total | |
| In town | 25 | 37 | 38 | 100 |
| mall | 30 | 48 | 22 | 100 |
| Total | 55 | 85 | 60 | 200 |
What is the null hypothesis if you want to check if the age patterns of customers are independent of bank location?
Use the chi square test to accept or reject the null hypothesis. What is the chi square test statistic?
What is the chi square critical value and how many degrees of freedom does it have? Assume alpha is .05.
What do you conclude?
What are the expected numbers for each cell in a 3 by 3 table if the null hypothesis is true?
