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 one-sample test.

Use the scores below to calculate the observed t-test score to test the prediction that the students study the recommended minimum of 15 hours a week. 19 13 24 14 8 29 6 5 5 10 **Report your final answer to 4 decimal places. **To receive credit for this problem you need to submit a picture of your hand calculations. The picture should show the formulas you used and your hand calculations, including the intermediate steps.

For each statement below, indicate whether the statement describes a population distribution, sampling distribution of the mean, both distributions, or neither distribution. -It is a distribution of raw scores (X): -The mean of the distribution equals mu (

Based on the results, what is the correct p-value for the problem?

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?

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

In general, it is expected that .

Which of the following mechanisms primarily drives the movement of blood through veins?

Mechanisms that do NOT help regulate blood pressure include .

What is the most important mechanism of exchange at the capillary, responsible for the exchange of all respiratory gases, glucose, and wastes?