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# Is the investigational drug effective in improving the lung capacity of chronic smokers?

INSTRUCTIONS TO CANDIDATES

1. Is the investigational drug effective in improving the lung capacity of chronic smokers?

Which are the relevant variables to this problem? What are their roles and levels of measurement?

Which type of t-test should be used? Why?

State the Null Hypothesis

State the Alternative Hypothesis (Identify if it is one-tailed or two-tailed)

State the Level of Significance

Perform the test in Jamovi

[paste the Jamovi results here]

Interpret the results of the Assumption Checks

Report the p-value and 95% CI (Include the Descriptive Plots)

Make a Statistical Decision

2. Is there a  difference in the smoking index of the subjects obtained from the two localities

Which are the relevant variables to this problem? What are their roles and levels of measurement?

Which type of t-test should be used? Why?

State the Null Hypothesis

State the Alternative Hypothesis (Identify if it is one-tailed or two-tailed)

State the Level of Significance

Perform the test in Jamovi

[paste the Jamovi results here]

Interpret the results of the Assumption Checks

Report the p-value and 95% CI (Include the Descriptive Plots)

Make a Statistical Decision

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