In a survey of 1000 randomly selected adults in the United States, participants were asked what their most favorite and what their least favorite subject was when they were in school (Associated Press, August 17, 2005). In what might seem like a contradiction, math was chosen more often than any other subject in both categories! Math was chosen by 228 of the 1000 as the favorite subject, and it was also chosen by 366 of the 1000 as the least favorite subject.

(a) Construct a 95% confidence interval for the proportion of U.S. adults for whom math was the favorite subject in school. (Give the answers to four decimal places.)

( , )

(b) Construct a 95% confidence interval for the proportion of U.S. adults for whom math was the least favorite subject. (Give the answers to four decimal places.)

( , )

A recent national survey found that high school students watched an average (mean) of 6.5 movies per month with a population standard deviation of 0.6. The distribution of number of movies watched per month follows the normal distribution. A random sample of 33 college students revealed that the mean number of movies watched last month was 5.8. At the 0.05 significance level, can we conclude that college students watch fewer movies a month than high school students?

1. State the null hypothesis and the alternate hypothesis.
   
2. State the decision rule.
   
3. Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
   
4. What is your decision regarding H₀?
   
5. What is the p-value? (Round your answer to 4 decimal places.)

A study of undergraduate computer science students examined changes in major after the first year. The study examined the fates of 256 students who enrolled as first-year students in the same fall semester. The students were classified according to gender and their declared major at the beginning of the second year. For convenience we use the labels CS for computer science majors, EO for engineering and other science majors, and O for other majors. The explanatory variables included several high school grade summaries coded as 10 = A, 9 = A-, etc. Here are the mean high school mathematics grades for these students.

Describe the main effects and interaction using appropriate graphs and calculations.

Critical Thinking Assignment Four

5. We often say that education is the key to improving one's chances in life, but is our educational system really equal? Compare, for example, schools in different states where you or your friends have lived. Then compare schools in the suburbs with schools in the inner cities. Why is there such a variation? Only about one-third of all high school math and science teachers majored in math or science in college. Where do you think those one-third teach? Who is teaching math and science in the other schools? What does that say about equal educational opportunities? Would you support a voucher system that would allow students to go to any school they wanted to?

PLEASE WRITE AS MUCH AS POSSIBLE!!!!

A study compared the drug use of 288 randomly selected high school seniors exposed to a drug education program (DARE) and 335 randomly selected high school seniors who were not exposed to such a program. Data for marijuana use are given in the accompanying table.

At the 5% significance level, is there convincing evidence that the proportion using marijuana is lower for students exposed to the DARE program?

Round these answers to two places after the decimal:
Test-statistic =   (to two places after the decimal)

P-value =   (to four places after the decimal)
There  --- is is not sufficient evidence to conclude that the proportion of students using marijuana is lower for students exposed to the DARE program.

An engineering school reports that 55% of its students are male (M), 37% of its students are between the ages of 18 and 20 (A), and that 30% are both male and between the ages of 18 and 20. What is the probability of a random student being chosen who is a female and is not between the ages of 18 and 20? Your answer should be to two decimal places.

An engineering school reports that 50% of its students were male (M), 39% of its students were between the ages of 18 and 20 (A), and that 34% were both male and between the ages of 18 and 20. What is the probability of choosing a random student who is a female or between the ages of 18 and 20? Assume P(F) = P(not M). Your answer should be given to two decimal places.

State the null hypothesis.

State the alternate hypothesis.

What is (are) the independent variable(s)?

What is (are) the dependent variable(s)?

Objective

African-American adolescents are twice as likely to develop hypertension in early adulthood than adolescents from other racial groups. The purpose of this study was to determine the efficacy of a school-based health promotion intervention.

Method

Participants were African-American adolescents aged between 14 and 17 years attending an urban high school. The 9-week intervention program focused on the participants' knowledge, diet, exercise, and blood pressure.

Conclusions

The intervention program was efficacious in knowledge (p = .0001), exercise (p = .0001), as well as fruit and vegetable intake (p = .0001). Differences in systolic (p = .5548) and diastolic (p = .9719) blood pressure levels were not significant.

Child abuse and maltreatment is not limited to a particular age and can occur in the infant, toddler, preschool, and school-age years. Choose one of the four age groups (infant, toddler, preschool, or school age) and discuss the types of abuse that are most often seen in this age. Discuss warning signs and physical and emotional assessment findings the nurse may see that could indicate child abuse. Discuss cultural variations of health practices that can be misidentified as child abuse. Describe the reporting mechanism in your state and nurse responsibilities related to the reporting of suspected child abuse. Your individual response should have a 1. minimum of 300 words excluding your reference citation 2. need to use two peer-reviewed/scholarly resources to support your response 3. at least one in-intext citation

The following Supply and Demand equations describe the market for Bachelors Degrees in the US in 2018-19 school year. All numbers are in 1,000s. The price represents 4 years of tuition, and the quantity represents the number of graduates with bachelors degrees in a single year.

Qd = 5700 − 38 Pd

Qs = 12.667 Ps + 380

Government subsidies in the form of guaranteed loans and grants are valued at $5,000 per year per student, or $20,000 over four years.

3. Find the free market equilibrium outcome, if no subsidy had been in place for the 2018-19 school year. (5 points)

a) What is the free market price of bachelor’s degrees?

b) What is the free market quantity of bachelor’s degrees?

c) Calculate the CS

d) Calculate the PS

e) Calculate the Total Surplus