These are the scores of 40 students in MAT that took the Final Exam. Perform the computations asked below with this set of data:

1. What is the class mean of the test scores? Round to the nearest whole number.

2. What is the standard deviation (Sx) of the scores? Round to the nearest tenth.

3. What is the range of the scores?

4. What is the median?

5. What is the five number summary? Round each number to the nearest tenth.

6. The scores are roughly normally distributed. Calculate the interval that 68% of the data values fall between. Round to the nearest whole number.

Type answer as #1 to #2. Example: 65 to 76

7. Suppose a student got a 71 on the exam. Calculate a z-score, to two decimal places, for this student.

8. Describe the z-score according to its relationship to the mean (steps above/below).  

Select one:

a. The z-score is .15 steps above the mean.

b. The z-score is .15 steps below the mean.

c. The z-score is 20.5 steps below the mean.

d. The z-score is 20.5 steps above the mean.

9. What percentile is the student in? Round to the nearest whole number.

10. What does the student percentile represent?

Select one:

a. The student earned a higher score than 44% of the other students in the class.

b. 44% of the students passed the exam.

c. 44% of the students earned a higher score than the student.

d. The student has a 44% chance of passing the exam.

8. An SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores?

Let d=(verbal SAT scores prior to taking the prep course)−(verbal SAT scores after taking the prep course)d=(verbal SAT scores prior to taking the prep course)−(verbal SAT scores after taking the prep course). Use a significance level of α=0.01 for the test. Assume that the verbal SAT scores are normally distributed for the population of students both before and after taking the SAT prep course.

Step 1 of 5: State the null and alternative hypotheses for the test.

Ho: μd (=,≠,<,>,≤,≥) 0

Ha: μd (=,≠,<,>,≤,≥) 0

Step 2 of 5: Find the value of the standard deviation of the paired differences. Round your answer to one decimal place.

Step 3 of 5: Compute the value of the test statistic. Round your answer to three decimal places.

Step 4 of 5: Determine the decision rule for rejecting the null hypothesis H0H0. Round the numerical portion of your answer to three decimal places.

Reject Ho if (t, I t I), (<,>) _____

Step 5 of 5: Make the decision for the hypothesis test.

Reject Null Hypothesis Fail to Reject Null Hypothesis

5-Miranda missed the class period when her teacher introduced the steps for analyzing a speech. During class, students practiced the skill and got feedback from the teacher to help them perform the skill with competence. Now Miranda needs to teach herself and catch up with the rest of the class. This self-regulated learning will involve all of the following factors EXCEPT:

A.

motivation.

B.

volition.

C.

efficacy.

D.

knowledge.

6-Alan's art project is due tomorrow. He and all other fifth graders in his school have the opportunity to submit drawings, and one of them will be chosen as the yearbook cover. Alan loves to draw and wants his picture to be chosen. He knows his idea is good and that he has the drawing skills to submit one of the best drawings, but he keeps playing his video game. What is lacking in Alan's case?

A.

Volition

B.

Self-esteem

C.

Knowledge

D.

Motivation

7-A a few days ago, Mr. McKay worked with students to develop a rubric for assessing their projects in the historical fiction unit. The class has worked on the unit for more than a week, and students know the expectations for their projects. Today Mr. McKay paired students to work together and review their work using the rubric as a guide. This scenario is an example of:

A.

co-regulation.

B.

volition.

C.

high efficacy.

D.

shared regulation.

8-Various perspectives on learning are represented in the diverse views and theories that form the four pillars of teaching: behavioral, cognitive, constructivist, and social cognitive. Which perspective views the teacher's role as one of model, motivator, and facilitator of learning as well as the model of self-regulated learning?

A.

Behavioral

B.

Cognitive

C.

Social cognitive

D.

Constructivist

Instructions: Write your responses to the following 5 questions for at least 5 of the 7 example news stories about correlational studies:

1. Identify X and describe how it is being measured
2. Identify Y and describe how it is being measured
3. State the direction of the correlation (+ or –)
4. Identify a possible Z (third) variable
5. Fully interpret the relationship between X and Y (in plain English)

Example 5: Internet use in class leads to lower test scores  

1. Cognitive science consistently shows that one of the most effective studying tools is to self-test. A recent study reinforced this finding. In the study, 118 college students studied 48 pairs of Swahili and English words. All students had an initial study time and then three blocks of practice time. During the practice time, half the students studied the words by reading them side by side, while the other half gave themselves quizzes in which they were shown one word and had to recall its partner. Students were randomly assigned to the two groups, and total practice time was the same for both groups. On the final test one week later, the proportion of items correctly recalled was 15% for the reading-study group and 42% for the self-quiz group. The standard error for the difference in proportions is about 0.07. Test whether giving self-quizzes is more effective and show all details of the test. The sample size is large enough to use the normal distribution. Remember – there are four steps for the hypothesis test: Hypotheses with explanation of what the parameter represents, Find the Test statistic, Find the P-value, Give the Conclusions, including the justification, conclusion about the null and conclusion in context of the problem.

   2. We have the following two-way table showing the servers and whether or not the customer used a credit card to pay for their meal. TABLE A B C Yes 21 15 15 No 39 50 17
2. a) Compute and interpret a 95% confidence interval for the proportion of bills paid with a credit card. SE = 0.0373 b) From the confidence intervals In part b) does it appear that Server B is responsible for 1/3 of the bills this week? c) Compute and interpret 90% confidence intervals for the proportion of bills for each server. A: SE = 0.0388, B: SE = 0.0393, C: SE = 0.0321

Administrators want to know if test anxiety is impacted by the number of college years completed. After completing their freshman year, a random sample of students was selected and given the College Test Anxiety Questionnaire (CTAQ); higher scores indicate more test anxiety. After completing their junior year they were again tested. What can the administrators conclude with α = 0.05?

a) What is the appropriate test statistic?
---Select--- na OR z-test OR One-Sample t-test OR Independent-Samples t-test OR Related-Samples t-test

b)
Condition 1:
---Select--- junior OR CTAQ OR test anxiety OR number of college years OR freshman
Condition 2:
---Select---junior OR CTAQ OR test anxiety OR number of college years OR freshman

c) Input the appropriate value(s) to make a decision about H₀.
(Hint: Make sure to write down the null and alternative hypotheses to help solve the problem.)
p-value = _____ ; Decision:  ---Select--- Reject H0 OR Fail to reject H0

d) Using the SPSS results, compute the corresponding effect size(s) and indicate magnitude(s).
If not appropriate, input and/or select "na" below.
d = _____ ;   ---Select--- na OR trivial effect OR small effect OR medium effect OR large effect
r² = _____ ;   ---Select--- na OR trivial effect OR small effect OR medium effect OR large effect

e) Make an interpretation based on the results.

A) Students showed significantly less anxiety in their junior year as opposed to their freshman year.

B) Students showed significantly more anxiety in their junior year as opposed to their freshman year.    

C) Students showed no significant anxiety difference between their junior and freshman year.

1. You manage an ice cream factory that makes two flavors: Creamy Vanilla and Continental Mocha. Into each quart of Creamy Vanilla go 2 eggs and 3 cups of cream. Into each quart of Continental Mocha go 1 egg and 3 cups of cream. You have in stock 850 eggs and 1,650 cups of cream. How many quarts of each flavor should you make in order to use up all the eggs and cream?

2. Enormous State University's Math Department offers two courses: Finite Math and Applied Calculus. Each section of Finite Math has 80 students, and each section of Applied Calculus has 70 students. The department will offer a total of 150 sections in a semester, and 11,200 students would like to take a math course. How many sections of each course should the department offer in order to fill all sections and accommodate all of the students?

3

Gerber Product's Gerber Mixed Cereal for Baby contains, in each serving, 60 calories and 11 grams of carbohydrates.† Gerber Mango Tropical Fruit Dessert contains, in each serving, 80 calories and 21 grams of carbohydrates.† If you want to provide your child with 300 calories and 74 grams of carbohydrates, how many servings of each should you use?

4.

You are the buyer for OHaganBooks.com and are considering increasing stocks of romance and horror novels at the new OHaganBooks.com warehouse in Texas. You have offers from two publishers: Duffin House and Higgins Press. Duffin offers a package of 5 horror novels and 5 romance novels for $50, and Higgins offers a package of 5 horror and 11 romance novels for $150.

How many packages should you purchase from each publisher to get exactly 7,500 horror novels and 10,800 romance novels?

The assignment: C++ program or Java

You need to use the following programming constructs/data structures on this assignment.

1. A structure named student which contains:  

a. int ID; student id;

b. last name; // as either array of char or a string

c. double GPA;   

2. An input file containing the information of at least 10 students.

3. An array of struct: read the student information from the input file into the array.

4. A stack: you can use the standard library template for the stack or you can write your own code for the different stack operations. The stack stores elements of type student.

5. Output file containing a duplicate of all output sent to the console.

What to do:

1. Read all students rows from the input file into an array.

2. Store the information about seven different students in the stack: This is intended to initialize the stack.

3. Generate a random number between 1 and 20.

4. If the randomly generated number is even, read one row from the array and store it (push it) into the stack.

5. If the randomly generated number is odd then check If the number is divisible by 3, if so ask the user if they want to quit.

6. If the user selects to continue or the odd number is not divisible by 3 then pop one element from the stack and send it to the output file.,

7. If the stack is not empty and you quit: it will display the number of the students left in the stack, and display the information of each student left in the stack.

8. If you choose to quit, and the stack is empty when a pop is needed, or the array is empty when a push is required then do the following:

a. Display on the console and send to the output file: “The reason for quitting”, how many elements are left on the stack when quitting, and the content of each student record found in the stack when quitting.

SUBJECT BTA (Foundations of B.A.)

Case Study

Spring Breaks R Us Travel Service

Chapter 3 – Use Cases

Spring Breaks ‘R’ Us (SBRU), introduced in Chapter 2, includes many use cases that make up the functional requirements. Consider the following description of the Booking subsystem. A few weeks before Thanksgiving break, it is time to open the system to new bookings. Students usually want to browse through the resorts and do some planning. When a student or group of students wants to book a trip, the system allows it. Sometimes, a student needs to be added or dropped from the group or a group changes size and needs a different type of room. One month before the actual trip, it is time for the system to send out final payment requirement notices. Students cancel the booking or they pay their final bills. Students often want to look up their booking status and check on resort details. When they arrive at the resort, they need to check in; and when they leave, they need to check out.

Case Question:

1. Using the event decomposition technique for each event you identify in the description here, name the event, state the type of event, and name the resulting use case. Draw a use case diagram for these use cases
2. Consider the new Social Networking subsystem that SBRU is researching that was described in Chapter Identify all the actors who might use the subsystem. Think in terms of the user goal technique to identify as many use cases as you can think of that you would like to have in the system. SBRU is guessing you might want to join, send messages, and so forth, but there must be many interesting and useful things the system could do before, during, and after the trip. Draw a use case diagram for these use cases.

1. 
   
2. You are a public health nurse working in an elementary school in Hamilton, Ontario. You have seen a substantial increase in the number of children in your school presenting with Attention Deficit Disorder (ADD). You are interested in whether a new drug developed by a local drug company improves the ability of children with ADD to maintain attention. You obtain ethics approval to study the drug, informed consent from the parents of 24 fifth grade children with ADD, administer the drug to the 24 children, and administer a test to the children to determine their ability to maintain attention while performing a task. Scores are continuous, can range from 0 to 25 with higher scores reflecting a better ability to maintain attention, and you know from previous research that scores tend to be normally distributed. Six of these students receive a placebo containing none of the drug. Six students receive 2 mg of the drug, six students receive 4 mg of the drug, and six students receive 6 mg of the drug. The table below summarizes the results from your study. Use these data to answer the following questions. Assume α=0.05.

3. Placebo (0 mg)	Drug (2 mg)	Drug (4 mg)	Drug (6 mg)
   4	7	16	17
   7	8	14	18
   11	13	12	13
   11	6	11	17
   7	9	15	20
   10	9	13	15

4. a.You have one further prediction, and that is that children with ADD who receive the drug will perform significantly better than children with ADD who do not receive the drug. Conduct the appropriate test to confirm this prediction, if the results from question a support doing this additional testing. Are you able to confirm your prediction? Explain, including the calculations and/or SPSS output to support your answer. [2 Marks]