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In 2018 and 2019, Health Canada commissioned two national surveys on the use of cannabis among...

In 2018 and 2019, Health Canada commissioned two national surveys on the use of cannabis among people aged 20 to 24. They found 175 users out of the 1000 surveyed individuals in 2018 and 230 out of the 1100 sample in 2019.

  1. (a) Test the hypothesis that there has been a change in the proportion of cannabis users in the 20-24 age

    group population between 2018 and 2019. Use the critical value approach and a 0.05 level of

    significance.

  2. (b) Find the p-value for your result in (a) above.

  3. (c) Calculate a 95% two-sided confidence interval for the true difference using the data provided.

  4. (d) Explain how the p-value and the confidence interval are or are not consistent with your result in

    part (a) above.

Solutions

Expert Solution

  1. a) Test the hypothesis that there has been a change in the proportion of cannabis users in the 20-24 age group population between 2018 and 2019. Use the critical value approach and a 0.05 level of significance.

  2. (b) Find the p-value for your result in (a) above.

Confidence interval

milcah answered 1 year ago
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