On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 100 and a standard deviation of 16. Suppose one individual is randomly chosen. Let X = IQ of an individual.

a. What is the distribution of X? X ~ N( ,

b. Find the probability that a randomly selected person's IQ is over 116. Round your answer to 4 decimal places.

c. A school offers special services for all children in the bottom 3% for IQ scores. What is the highest IQ score a child can have and still receive special services? Round your answer to 2 decimal places.

d. Find the Inter Quartile Range (IQR) for IQ scores. Round your answers to 2 decimal places. Q1: Q3: IQR:

Results on seat belt usage from the 2003 Youth Risk Behavior Survey were published in a USA Snapshot on January 13, 2005. The following table outlines the results from the high school students who were surveyed in the state of Nebraska. They were asked whether or not they rarely or never wear seat belts when riding in someone else's car. Using α = .05, does this sample present sufficient evidence to reject the hypothesis that gender is independent of seat belt usage?

(a) Find the test statistic. (Give your answer correct to two decimal places.)


(ii) Find the p-value. (Give your answer bounds exactly.)
< p <

1. At times we all regret decisions. Does this necessarily mean we did not use the economic decision rule when making the decision?
2. Research shows that after-school jobs are highly correlated with decreases in grade point averages. Those who work 1 to 10 hours get a 3.0 GPA and those who work 21 hours have a 2.7 GPA. Higher GPAs are, however, highly-correlated with higher lifetime earnings. Assume that a person earns $8,000 per year for working part-time in college and that the return to a 0.1 increase in GPA gives a 10 percent increase in one's lifetime earnings with a present value of $80,000.
   • What would be the argument for working rather than studying harder?
   • Is the assumption that there is a trade-off between working and grades reasonable?

1. To illustrate the effects of driving under the influence (DUI) of alcohol, a police officer brought a DUI simulator to a local high school. Student reaction time in an emergency was measured with unimpaired vision and also while wearing a pair of special goggles to simulate the effects of alcohol on vision. For a random sample of nine teenagers, the time (in seconds) required to bring the vehicle to a stop from a speed of 60 miles per hour was recorded.

Test the claim that there is a no difference in braking time with impaired vision and normal vision at the 0.05 level of significance

-Is there any way of solving this on stat crunch

The state average for the TAKS-math scores was 75 percent passing. A parent in Tyler, TX claims that students are doing much worse than the state passing rate. The high-school principal in Tyler, TX, summarized her latest TAKS-math scores from the 11th grade. Out of 120 students, 85 got a passing TAKS-math score. Is there evidence at the 5% level to support the parent’s claim?

What are the null and alternative hypotheses for this test?

a) Ho: p ≥≥ 0.75 Ha: p < 0.75

b) Ho: μμ > 0.75 Ha: μμ < 0.75

c) Ho: p = 0.75 Ha: p ≠ 0.75

d) Ho: p ≥≥  0.05 Ha: p < 0.05

What is the critical value of the test statistic?

a) -1.645

b) -2.33

c) 1.645

d) -1.28

·       How would you describe your social competence as a young child? Did it change over middle childhood?

·       Were you a high or a low status child then?

·       Did you play predominantly with high or low status children?

·       Were you popular?

·       Think of a popular child in your school and an unpopular child (first names only).

o    Describe the popular child. Make sure you consider the characteristics that contributed to this child's popularity.

§ How do these characteristics compare with popular child characteristics you read about in your text?

o    Describe the unpopular child. Make sure you consider the characteristics that contributed to this child's unpopular status.

§ How do this child's characteristics compare with unpopular child characteristics you read about in your text?

Choose the most appropriate type of hypothesis testing for each of the followings.

(a) You want to compare annual salary means of employees from five different companies and see whether they are equal.

(b) You want to examine 20 families data and compare daughter's height and mother's height. You want to check whether they are different.

choose from one sample z test, one sample t test, pooled t test, paired t-test, anova

(c) A sample of 18 senior marketing majors, which is one of the business majors, shows a mean cumulative GPA of 3.4 with a standard deviation of 0.25. You want to check whether the cumulative GPA of marketing majored seniors is significantly different from 3.25, which is the mean GPA for all business school seniors.

Review the following scenario and address questions:

For years, Victoria has been torn between the desire to practice nursing in the vibrant, metropolitan city, or in her peaceful, mountainous hometown in the country with her family. She wonders how the two experiences differ. How do the demands differ? How does the technology differ? To learn more about these differences, she explores a variety of education scenarios, including computer-based virtual reality, simulations, and real-life scenarios in both urban and rural settings.

How do you think the demands and technologies differ?

How can virtual reality, simulations, and real-life scenarios be designed to provide optimal education for nursing students?

How might they be integrated into the nursing school curriculum to increase patient, practitioner, and hospital safety?

For this discussion you will be divided into two discussion groups. Group A will review the Jewish Chronic Disease Hospital Study. Group B will review the Tuskegee Syphilis Study. There are many high quality resources on the web that address both of these topics - please make sure that you are reviewing high-quality, scholarly sources, such as your textbook, sources from the school library, .gov, or .edu sources. If you have a question regarding what a scholarly source is, please refer to the resources located on our Nursing Library and Learning website For your initial post, you will review the assigned study and answer the following questions: Give an overview of the study. Discuss how at least 3 of the 6 rights/guidelines listed in the ANA Guidelines for Protecting the Rights of Human Subjects were either upheld or not upheld.