As a student you have probably noticed a curious phenomenon. In every class, there are some...

As a student you have probably noticed a curious phenomenon. In every class, there are some students who zip through exams and turn their papers in while everyone else is still working. Other students continue working until the very last minute. Have you ever wondered what grades these students get? Are the students who finish first the best in the class or are they simply conceding failure? To answer this question, we carefully observed a recent exam and recorded the amount of time each student spent working (X) and the grade they received (Y). The data from the sample of n = 10 students is below.

a) compute the Pearson correlation to measure the degree of relationship between the time spent writing the exam and the grade. Is the correlation statistically significant? State the null hypothesis, use α = .05 two-tailed and include a summary statement.

b) What percentage of variance in grades is predicted from time spent writing the exam?

Student	Time(in minutes)-X	Exam Grade-Y
1	54	75
2	38	91
3	60	70
4	44	94
5	60	76
6	40	89
7	57	92
8	52	81
9	45	88
10	49	90

Expert Solution

Dear student,
I am waiting for your feedback. I have given my 100% to solve your queries. If you are satisfied by my given answer. Can you please like it☺

orchestra answered 1 year ago

You have probably noticed that some groups to which you have belonged were able to get...

You have probably noticed that some groups to which you have belonged were able to get a task done very effectively, while other groups seemed to lack direction and purpose. When you think about it, you can probably attribute much of the group’s effectiveness to the leader’s decision-making style. For this Discussion, you will have a chance to assess on your own leadership style as well as to reflect on the one under which you feel that you do your...

Visual Searches You probably notice every day that some objects in the environment are easier to...

Visual Searches You probably notice every day that some objects in the environment are easier to notice than other objects. For example, workers at sports stadiums often wear bright yellow shirts, which are very easy to see. While the crowd may blend in together, the workers are prominent and are easy to notice when you want a drink or something to eat. In this assignment, you will further explore how people engage in visual searches and what features of a...

Share with the class your family history of graying and any traits that you have noticed...

Share with the class your family history of graying and any traits that you have noticed in youself . Respond using no less than 100 works . Please respond to 1 of your class members with no less than 50 words

What is the probability that every student in a class of 20 will pass the quiz?

Quote an example where you noticed consumer surplus. What did you think about the phenomenon at...

Quote an example where you noticed consumer surplus. What did you think about the phenomenon at that time and how do you look at it after understanding the concept of consumer surplus.

The goals of this class are to insure that you have learned the following Student Learning...

The goals of this class are to insure that you have learned the following Student Learning Outcomes (SLOs). Please explain what you did in this class that would demonstrate what you have learned. Use complete sentences, checked for grammar and spelling. About a half page of double-spaced (12 pt) narrative per item is sufficient. Start each section with the number and SLO listed as follows: Use current technology such as the internet to research information, integrate data, and compose specialized...

What were some of the concepts that made you curious or prompted you to look at...

What were some of the concepts that made you curious or prompted you to look at the relationship between business and society differently?

As a curious General Genetics student, you grew and observed the performance of two wheat plants...

As a curious General Genetics student, you grew and observed the performance of two wheat plants of the same variety in different locations. One in your backyard garden and the other in a pot under a shade. After the wheat matured, you observed that the plant from the garden yielded more grains than that from the shade. Give a genetic explanation for your observation On your Grandfather’s farm, two black cattle have been mated over several years. Out of a...

Glutamate synthetase is central to nitrate assimilation. You, as a grad student, are curious about how...

Glutamate synthetase is central to nitrate assimilation. You, as a grad student, are curious about how other nutrients might regulate this enzyme; and specifically, you would like to study how the gene encoding this enzyme is regulated by the presences of phosphate in the environment. Describe the design of your experiment(s) that will look at the regulation of the glutamate synthetase gene by phosphate. Remember to include controls in your description.

Think about the money you spend every day. You probably spend the most money at or...

Think about the money you spend every day. You probably spend the most money at or near the beginning of each month. However, after all the bills are paid, you have what are often referred to as discretionary funds. That’s money you can spend any way you wish. Please tell us on what types of things you spend that extra-or discretionary-money? How will learning the Quicken software help you determine whether you have discretionary funds, and if so, how much...

Question