Twelve jurors are randomly selected from a large population in which it is known that 85% are right handed. Assuming the jury has 12 members, find the following: (you may round your answers to 4 decimal places, no sentence necessary) a. Find the probability that exactly 6 are right handed. [answer1] b. Find the probability that at most 6 of them are right handed. [answer2] c. Find the probability that at least 6 of them are right handed.  [answer3]

An environmentalist wanted to determine of the mean acidity of rain differed among Alaska, Florida, and Texas.  18 randomly selected six rain dates of each of the three locations and obtained the following data: Alaska Florida Texas 5.41 4.87 6.46 5.39 5.18 6.89 4.90 4.52 6.57 5.14 5.12 4.15 4.80 4.89 4.45 5.24 5.06 4.30   Test whether the acidity of the rain is the same in the three cities, use a 0.05 significance level.  You may assume the requirements are met to run this test. a. What are the null and alternative hypotheses? b.  What is your test statistic? c.  What is your p-value or critical values and what is your conclusion? Briefly explain as in, I reject Ho because….. or I do not reject Ho because….. d.  Write a conclusion sentence in the context of the problem.

The purpose of Anterior Cruciate Ligament is to ________.

Describe the screw home mechanism and its purpose.

Describe the actions of each rotator cuff muscle.

The patellofemoral joint includes which bones?

The __________ is the portion of the neural arch just posterior to the body and anterior to the lamina.

Descending stairs requires what type of contraction from the quadriceps group?

Use the following description to answer the next set of questions. A researcher is interested in the relationship between listening to music while studying and comprehension. To examine the relationship, the researcher assigns 200 participants to either the music or no-music condition. The researcher uses random assignment to assign participants to the two conditions. Each group is then instructed to read and study a passage of information (either with or without music). Both groups are given the same passage of information and provided the same amount of time to study the information. All of the participants are then given a 10-item test to assess their comprehension of the material.

Of the 8 threats to internal validity, identified by Campbell and Stanley, which threat would you be most concerned with in this study? Explain what impact the threat would have on the results of the study and identify one way you could control the threat.