Scores of female tests had a mean of 63% (assume normal distribution with a standard deviation of 10%).

A. A girl is randomly selected from all females whose scores are higher than 75%. What is the probability that the girls score is higher than 96%.

B. One thousand people are randomly selected. What is the probability that fewer than 100 of them have a score higher than 75%? Use normal approximation of binomial distribution.

The weight of adult males are normally distributed with a mean of 75kg and a standard deviation of 9kg. What is the probability that 16 randomly selected adult males will have a mean weight of more than 85kg?

2. Phenylthiocarbamide (PTC) has the chemical structure that resembles toxic alkaloids in

poisonous plants. The ability to taste this compound is a dominant trait and is strongly

correlated with the ability to taste other bitter substances, many of which are naturally

occurring toxicants. Suppose that you are studying two heterozygous tasters for PTC

.

a. What are the chances that they will have three taster children?

b.What are the chances that they will have three taster girls?

c.Assuming that they have five children, what are the chances the the first three will be tasters and the last two non-tasters?

d. If they have a taster daughter, and she marries a non-taster, what are the chances that they will have non-taster offspring

Essay Topics3: Write a short essay on each of the topics, answering all questions in each topic in a clear, coherent, and concise essays.

A. The Convertibiliy Plan Explain the Argentinean experiment with the Convertibility

Plan. What were the conditions that prompted the Plan? What was the central piece

of the Plan? What were consequences of the Plan in the late 1990s and early 2000s?

B. Market Economic System List and explain three strengths of a market system.

Then, explain the concept of market failure (one of the weaknesses). What are the

four major market failures we have covered in class? Explain each in detail and give a

brief example of how the government would get involved to fix (or at least try to fix)

each particular market failure.

Question 2 - Duration and Interest Rates             

a)     Calculate the PV, RV, WV and Macaulay duration of a 5-year, $1,000 face value, 14 percent coupon bond yielding 15 percent with coupons paid annually.

b)      Why is interest rate risk important to a financial manager and how can a financial manager use the Macaulay duration to hedge against interest rate risk?

c)      Next, use the Macaulay duration to calculate what happens to the price of the bond when the yield to maturity falls to 14 percent.

d)      Why is the price of the bond you calculated using the Macaulay duration not equal to $1,000?

e)      Finally, how do you explain the appearance of a humped-shaped (or bell-shaped) yield curve in the 1990s?

Mr. Grade’s was a new teacher whose students loved to chew gum, but it wasn’t allowed at school. To motivate his students, Mr. Grade created a classroom procedure that stated that students could chew gum during independent work. His students behaved well during independent work time, and their rate of work completion increased. One day, Mr. Grade was observed by the principal. After the observation, the principal asked Mr. Grade to see her during his planning period. From the following what is the best reason do you think the principal asked for this meeting? A minimum of 3 paragraphs are required and please justify your position with scientific evidence.

Assuming that I'm working in Logistics & supply chain managements.

2 recources needed

We have all worked on projects whether formally (implementation of new software) or informally (planning a school program). Consider your experience on a project and what contributed to its success or failure. Perhaps it is the project’s completion on time, in scope, within budget limits, stakeholder satisfaction, increase in market share, quality improvement, or other business measures of success or failure.

Conduct research beyond your course materials and develop a position on what constitutes project success, and how measures of success might change for projects in for-profit, non-profit, government organizations, and for projects in international environments.

Bullying in schools has been the focus of various programs which work to reduce incidents of bullying and increase the reporting of activity related and/or involving this behavior. A very large school district implemented a new anti-bullying program designed to reduce incidents of bullying. For the past 20 years, the school district has received an average of 370 incidents of bullying across all schools in its district. The data below represent the number of bullying incidents for 15 schools at the end of the first year after implementing the new anti-bullying program: Bullying incidents reported

340 384 370 352 328 348 365 355 335 330 360 376 325 375 368

1. (A) What is the independent variable and its levels?

(B) What is the dependent variable and its scale (i.e., NOIR) of measurement?

B. What is the null hypothesis for the problem described above?

C. Conduct a test of the null hypothesis using p = .05. Be sure to properly state your statistical conclusion.

D. Provide an interpretation of your statistical conclusion from part c.

E. What type of statistical error might you have made?

F. How could the researcher increase statistical power for this study?

G. What is the 95% confidence interval for this study?

H. Provide an interpretation for the interval obtained in part g.

I. How does the confidence interval obtained in part g compare to your statistical conclusion from part c? (i.e., Where does the value expected by the null hypothesis fall in the confidence interval and how does this support or not support your decision to reject or not reject the null hypothesis?)

A middle school is implementing a healthier lunch (low carbs, high protein) program for a variety of reasons, one of which is to decrease office referrals due to behavior. The new menu is used for an entire school year (9 months). The number of office referrals for each month from the previous year is compare to the months of the current year. Has the new menu significantly decreased office referrals? The t-test of related samples was conducted at the .05 level. The Statcrunch results are as follows. (11.5 points)

Paired T statistics

Hypothesis test results:
μ_D : mean of the paired difference between post and pre
H₀ : μ_D = 0
H_A : μ_D < 0

Step 1: Develop Hypotheses:

a.     Independent Variable =                                                   Scale: Categorical       Quantitative (1 pt)

b.    Dependent Variable =                                                     Scale: Categorical       Quantitative   (1 pt)

c.     Circle:     One-tailed       Two-tailed (1 pt)

d.    Alternative hypothesis in sentence form. (1 pt)                                                                                                                                                                                                                                                                                                                                                                                   

e.     Null hypothesis in sentence form. (1 pt)                                                                                                                                       

f.     Write the alternative and null hypotheses using correct notation. (1 pt)

                                                  H₁:                                                                H₀:                                                                                                                    

Step 2: Establish significance criteria (.05 pt)

g.     a =

Step 3: Calculate test statistic, effect size, confidence interval, and power (3 pts)

h.    t_calculated =                                                        Level of significance (p) =                                  

i.     Decision:      reject null or                   fail to reject null

j.     Calculate effect size =                                                                                             

Step 4: Draw conclusion (2 pts)

k.    Write your conclusion in sentence form including appropriate results notation.