question archive During a 2-month trial period, a company institutes an exercise break for its workers to see if this will improve their sense of well-being
During a 2-month trial period, a company institutes an exercise break for its workers to see if this will improve their sense of well-being
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During a 2-month trial period, a company institutes an exercise break for its workers to see if this will improve their sense of well-being. A random sample of 67 workers are randomly chosen: during the first month they don't take any exercise breaks; during the second month they take two exercise breaks during their work day.
(a) Which type of hypothesis test should be conducted?
Option 1: Two-sided paired t-test
Option 2: One-sided two-sample t-test
Option 3: One-sided paired t-test
Option 4: Two-sided two-sample t-test
(b) The P-value for was found to be 0.042. For ? = 0.05, what is the appropriate conclusion?
Option 1: Reject H0: ?D = 0. There is insufficient evidence that exercise breaks result in increased worker satisfaction.
Option 2: Reject H0: ?D = 0. There is sufficient evidence that exercise breaks result in increased worker satisfaction.
Option 3: Don't reject H0: ?D = 0. There is insufficient evidence that exercise breaks result in increased worker satisfaction.
Option 4: Don't reject H0: ?D = 0. There is sufficient evidence that exercise breaks result in increased worker satisfaction.
