Question

course activity: treatments and significance
part a
question
determine the probability of the treatment groups mean being lower than the control groups mean by 15 points or more. then complete the statements.
the significance level is set at 5%, and the probability of the result is 7.8 %, which is greater than the significance level. the result is not statistically significant.
part b
question
which statement is true considering a significance level of 5%?
the result is not statistically significant, which implies that this result could be due to random chance.
the result is statistically significant, which implies that wearing a watch does not help people manage their time better.
the result is statistically significant, which implies that wearing a watch helps people manage their time better.
the result is not statistically significant, which implies that wearing a watch does not help people manage their time better.

Explanation:

Step1: Recall significance level concept

The significance level is a threshold for determining statistical significance. If the probability of a result (p - value) is less than the significance level, the result is significant.

Step2: Compare p - value and significance level

The significance level is 5% or 0.05 and the probability of the result is 7.8% or 0.078. Since 0.078>0.05, the result is not statistically significant. A non - significant result implies that it could be due to random chance.

Answer:

The result is not statistically significant, which implies that this result could be due to random chance.