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A car manufacturer claims that their new car batteries will last 7 years. A group of concerned citizens argues that the batteries do not last as long as the manufacturer claims. To investigate the citizens’ claim, the car manufacturer surveys 20 random car owners and found the average battery lasted 6.89 years with a standard deviation of .25. Fill-in: If the car manufacturer wants to show the batteries do last 7 years they should run a [direction] one-sample [test] test.

If the researcher wants to test the prediction that the students study the recommended minimum of 15 hours a week, what are the appropriate null and alternative hypotheses for the problem?

Which of the following statements are true about directional tests? (Select all that apply.)

The plateau phase of an action potential in cardiac muscle cells is due to the .

The pulse pressure is .

Reduction in the concentration of albumin in blood plasma would alter capillary exchange by .

Which hormone is associated with the kidneys (via renin release), is a powerful vasoconstrictor, and promotes the release of other hormones which raise blood volume and pressure?

The “pacemaker potential” of pacemaker cells is produced by the opening of at the end of an action potential.

Given an end diastolic volume (E D V) of 120 m l / beat and an end systolic volume (E S V) of 50 m l / beat, the stroke volume (S V) would be .

_______ capillaries found within the kidneys permit rapid exchange fluid exchange while preventing the passage of formed elements and large proteins.