When should a chi-square test be performed? b) List two (2) types of chi-square test and explain the difference between both tests. c) How do you find a chi-square value in the left tail of the distribution? d) What is the parameter of a chi-square test? e) What are observed and expected frequencies? f) How is a chi-square distribution different from the z-distribution? ( g) A busy pharmacy has a BMI weight scale installed inside the pharmacy, which is available to customers Mondays through Fridays. The manager of the pharmacy wanted to investigate if the number of persons utilizing the BMI scale are the same for each of the 5 days
When should a chi-square test be performed?
b) List two (2) types of chi-square test and explain the difference between both tests.
c) How do you find a chi-square value in the left tail of the distribution?
d) What is the parameter of a chi-square test?
e) What are observed and expected frequencies?
f) How is a chi-square distribution different from the z-distribution? (
g) A busy pharmacy has a BMI weight scale installed inside the pharmacy, which is available to customers Mondays through Fridays. The manager of the pharmacy wanted to investigate if the number of persons utilizing the BMI scale are the same for each of the 5 days of the week. A count on one random week revealed the following data.
Day Number of customers
Monday 254
Tuesday 199
Wednesday 210
Thursday 297
Friday 276
Here is the information the researcher identified:
H0: The number of customers using the BMI machine is the same for all 5 days of the week.
H1: The number of customers using the BMI machine is not the same for all 5 days of the week.
Level of significance is 5%
Test statistic = 28.51
Your job is assist the researcher by calculating the critical values to determine the rejection and rejection region and to state the conclusion based on your findings.
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