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Researchers want to evaluate the possible side effects of a drug. It is suspected that the drug may lead to an elevation in the blood pressure of users of the drug. A preliminary study of two groups of patients, one receiving the drug and the other receiving a placebo, provides the following information on the systolic blood pressure (in mm Hg) of the two groups: mean standard deviation Placebo 129.9 18.5 Drug 135.5 18.7 Assume that both groups have systolic blood pressures that have a normal distribution. The correct null and alternative hypotheses to answer this question are

A company rents equipment from firm A 75% of the time and from firm B 25% of the time. 90% of equipment from firm A is in good condition. Only 65% of equipment from firm B is in good condition. If a rented equipment is not in a good condition, what is the probability it came from firm A? 

80 randomly selected students were asked how they would describe their hometown. The counts are in this bar chart: How many variables are summarized in this bar chart? [fill1] What percentage of students describe their hometown as suburb or small town? [fill2] What percentage of students do not describe their hometown as small town? [fill3] In a random sample of 600 students, how many are expected to describe their hometown as rural? [fill4]

Based on the image, what muscle group is likely weak?  

A PTA is working with a patient with a known L4 HNP in an outpatient clinic. The patient reports central LBP and radiculopathy down the RLE to the back of the knee prior to the session, rating the pain as 5/10. The PTA has been having the patient go through a series of exercises in the prone position. Afterwards, the patient reports central LBP as 6/10 and radiculopathy only to the superior portion of the gluteal muscle. Which of the following BEST aligns with how the PTA should respond? 

A positive anterior draw test would be indicative of instability of the:

The sciatic nerve can often become entrapped by a particular muscle, causing peripheral symptoms in the sciatic nerve distribution. Which muscle?

Which of the following exercises would be appropriate for a TKA one day post op?

During knee flexion ROM, the normal accessory motion of the patella is:

A patient who has a diagnosis of  chronic patellofemoral pain will typically present with the following findings EXCEPT?