Energy in ATP is used to power skeletal muscle contraction, this is an example of what type of energy conversion? 

Find the sample variance. Round to one decimal place if needed. 15, 15, 15, 18, 21, 21, 21

A card is drawn from a standard deck of 52 cards. Find the probability that the card is a queen or a club. Express the probability as a simplified fraction.

Construct a 95% confidence interval for the population mean, 

Find the numerical value of each of the following expressions. Simplify your answers completely. \(4! = \) \(C(9, 2) = \) \(P(11, 3) = \) \(\displaystyle \binom{8}{3} = \)

Find matchings of the bipartite graphs below, or explain why no matching exists.

Suppose that you wanted to prove the statement, “If a graph is planar, then it has chromatic number at most 4.”  Which of the choices below would be the most appropriate start and end of a direct proof of the statement?Start: End: Which of the choices below would be the most appropriate start and end of a proof of the statement by contrapositive? Start: End: Which of the choices below would be the most appropriate start and end of a proof of the statement by contradiction? Start: End:

Select all that apply:  A 55 year old woman comes to her annual health check up.  The client is postmenopausal (last menstrual period was 5 years ago). Has a family history of coronary artery disease.  She smokes a pack and a half of cigarettes a day and drinks alcohol occasionally (one glass of wine a few times a week). Her Body Mass Index (BMI) is 30 kg/m². (obese) Based on the information provided, select which health promotion activities should the nurse recommend  to reduce her risk of developing coronary artery disease.

The nurse is assessing a 62 year  postmenopausal client.  The client complains of abnormal vaginal bleeding.  Along with endometrial (uterine) bleeding the client complains of pelvic pain, fatigue, and unintentional weight loss.  Which of the following tests would be a definitive test to determine the etiology of this postmenopausal bleeding?

The nurse is assessing a postpartum client who is attending their 6 week check in the prenatal clinic.  The client is inquiring about methods of birth control she can use while breastfeeding.  Select which of the following birth control methods would be appropriate to use while breastfeeding and not affect the client’s breast milk supply.  Select all that apply.