Note: For all questions in this assignment that require you to use a two-sample t-test, always use the non-pooled procedure (that is, the procedure that assumes population standard deviations are not equal).

Note: if your t-table does not include the correct df value, please round down to the next available df value.

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3. According to an online source, 79.8% of students are right-handed in Alberta secondary schools, 7.9% are left-handed, and 12.3% are ambidextrous (source: Census at School Canada, 2018-2019). A researcher wishes to test if these percentages seem reasonable among the general population of Albertans, so she obtains a random sample of 200 Albertans, from which she obtains the following frequency distribution: