For the hypothetical reaction (ΔH = 215 kJ) at equilibrium A (g) + 2B (aq) 6C(g) + D(s) Predict whether the amount of B would increase, decrease, or remain the same for each of the following changes (1 point each) Addition of A Remove C Removal of D Increasing the pressure Increasing the temperature
Read Details(05.05 MC) An ecological group suspects tuna are consuming dangerous levels of copper in a region of the world. Dangerous levels of copper are classified when they reach beyond 5.7 parts per million. A random sample of 21 tunas in the region were tested and the data is shown in the stemplot. Key: 2|0 = 2.0 parts per million Part A: What proportion of the tuna in the sample have dangerous levels of copper in their systems? (4 points)Part B: Construct and interpret a 98% confidence interval for the mean copper levels of the tuna if the sample of 21 tuna has a mean copper level of 4.77 parts per million and standard deviation of 1.16 parts per million. (6 points) (10 points)
Read DetailsSusan Smith, age 11, is in clinic with her mother for a routine check-up and immunizations. Just recently, Susan has been teased at school on several occasions about being fat and that is Ms. Smith’s primary concern because she is otherwise “very healthy.” Susan has always been a big girl, and there have been no dramatic changes in weight. She has a good appetite as always, likes most foods, and mom tries to “cook healthy” because her husband has been told he has a somewhat elevated cholesterol level. Both parents are moderately overweight, and Ms. Smith gains and loses 10 to 20 pounds on a regular basis. Susan is in the 5th grade, loves school, and does well; however, she does become anxious whenever she must take any type of test, and she hides in the coatroom when she looks at her test results. She has several school and neighborhood friends and enjoys playing with them. She lives with her mom, dad, and two younger brothers (normal weight). This summer, Susan will be home by herself after summer school for 2-3 hours a day throughout the 6-week session. Susan’s past health history is unremarkable, her immunizations were current upon kindergarten entrance, review of systems is negative, and her physical exam reveals no significant findings other than weight. Her BMI (body mass index) has remained steady over time at the 90th percentile, and her sexual maturity rating is 1. Obviously, there is much additional information that would be helpful, but write an assessment that reflects your basic thoughts identifying all issues that ideally need to be addressed. Include routine health supervision as well as any additional issues you wish to address. Then, create a succinct, but detailed, plan to accompany your assessment, be sure to provide rationale Assessment: 1. 2. 3. 4. 5. Plan: Rationale: Considering all you’ve learned about well child care and psychosocial issues, prepare a rationale so that you reflect knowledge of why you have decided on your plan of action. Number your rationale to correspond with your plan.
Read Details(05.01 MC) Suppose we select a simple random sample of size n = 325 from a large population with a proportion p of successes. Let p̂ be the proportion of successes in the sample. For which value of p is it appropriate to use the Normal approximation for the sampling distribution of p̂? (4 points)
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