Part 3 A survey is taken on average commute time to work. The mean and standard deviation
of the survey are as follows:
Mean commute time: 30 minutes
Standard deviation: 10 minutes
14. Use the mean and standard deviation above to calculate the z-score of a 45 minute
commute to work. Explain what this z-score tells us.
mn

Me find the value of x each figure.

Choose the linear inequality that describes the graph. the gray area represents the shaded region. a: y ≤ –4x – 2 b: y > –4x – 2 c: y ≥ –4x – 2 d: y < 4x – 2

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true