To test whether extracurricular activity is a good predictor of college success, a college administrator records whether students participated in extracurricular activities during high school and their subsequent college freshman GPA.

(a) Code the dichotomous variable and then compute a point-biserial correlation coefficient. (Round your answer to three decimal places.)


(b) Using a two-tailed test at a 0.05 level of significance, state the decision to retain or reject the null hypothesis. Hint: You must first convert r to a t-statistic.

Retain the null hypothesis OR Reject the null hypothesis.    

Use the cumulative normal probability excel output above (dealing with the amount of money parents spend per child on back-to-school items) to answer the following question.

The probability is 0.38 that the amount spent on a randomly selected child will be between two values (in $) equidistant from the mean. The lower of these equidistant points is provided in the excel output above. Use the lower endpoint and some math to find the upper endpoint.

In 2018, Carson is claimed as a dependent on his parents' tax return. Carson's parents provided most of his support. What is Carson's tax liability for the year in each of the following alternative circumstances? Use 2018 Tax Rate Schedule, Dividends and Capital Gains Tax Rates, Estates and Trusts for reference. for reference.

a. Carson is 17 years old at year-end and earned $14,000 from his summer job and part-time job after school. This was his only source of income.

b. Carson is 23 years old at year-end. He is a full-time student and earned $14,000 from his summer internship and part-time job. He also received $5,000 of qualified dividend income.

(22.06) Resistance training is a popular form of conditioning aimed at enhancing sports performance and is widely used among high school, college, and professional athletes, although its use for younger athletes is controversial. Researchers obtained a random sample of 4280 patients between the ages of 8 and 30 who were admitted to U. S. emergency rooms with injuries classified by the Consumer Product Safety Commission code "weight-lifting." These injuries were further classified as " accidental" if caused by dropped weight or improper equipment use. Of the 4280 weight-lifting injuries, 1456 were classified as accidental.

What is a 96% confidence interval for the proportion of weight-lifting injuries in this age group that were accidental?

The 96% confidence interval (±±0.001) is from  to

Events and activities happen so fast that there is no time to think or evaluate correct courses of action. Time to meditate and evaluate and think circumspectly has been absorbed in social media communications, emails, and events.

Quality family time with loved ones and children are non existent in many homes. Rarely do families sit down for a family dinner and discuss the events of the day. Informational technology has deteriorated family structure and is a contributor to anti-social behavior in high school teens. This can lead to violent behaviors such as mass shootings within our primary and secondary schools.

Is there substantive data to support this theory? What historical precedent is there to guide how much families should rely on informational technology. What are your conclusions?

Answer the following questions in a minimum of 500 words total.  

Define Intelligence. Describe the influence of nature and nurture on intelligence: what is heritability? What do twin studies tell us about the importance of genetics on intelligence? What about how children who have been adopted and how their intelligence scores relate to their biological parents?

What are some environmental influences on intelligence?

Discuss gender differences in intelligence: do men or women have higher verbal memory? Nonverbal memory? Emotion-detecting ability? Math aptitude? Spatial ability? What does it mean to say men have greater variability in intelligence?

Finally, discuss stereotype threat and how that might affect scores on intelligence tests and in school.

I need at least a page.

Section #2: Accessing Data

Where and how do you access information stored in a Database? Discuss how you use information either at work, school or in your personal life. For example: accessing a product inventory, customer account information, checking the balance or making a deposit in your bank account, etc. What application do you use to reference this information, such as using a web interface to access an XML or MySQL database? Further outline your experience with data storage and database management by discussing your experience with common database applications and the programming language behind them, such as using Microsoft Access based on Visual Basic or an Oracle Suite with SQL for performing backend queries.

2. Determine if the following are true or false and explain why. Matthew is a sixth grade student. He obtains a Grade Equivalent (GE) score of 8.3 in reading. This means that Matthew scored well above average fifth-graders on reading. A GE score for Matthew of 8.3 means that he can read as well as eighth-graders in the third month of the school year. Matthew’s GE score of 8.3 on reading means that Matthew could well be put in a class of eighth-graders for material in which readings skills are important Matthew scores a GE score of 6.4 in arithmetic on the same test battery from which his reading GE score was 8.3. This means that in arithmetic, Matthew is nearly two years behind his performance in reading.