Assessment 2: Analysis of Business Policy (1000 words) (20%)

Students are required to select a range of policies from a particular business and evaluate the policies according to:

1. Content: Does policy content clearly articulate the rationale, goals, and implementation strategies for various policies?

2. Implementation: Have policies been implemented as intended? What barriers to, and facilitators of, implementation have been identified?

3. Impact: Have policies produced their intended outcomes and impact? How do you know (i.e., refer to specific evidence where possible)?

Students should also frame some recommendations for future policy development that may be required by the business.

The following data are the monthly salaries y and the grade point averages x for students who obtained a bachelor's degree in business administration. GPA Monthly Salary ($) 2.7 3,600 3.5 3,800 3.6 4,200 3.1 3,700 3.5 4,100 2.8 2,500 The estimated regression equation for these data is ŷ = -55.3 + 1,157.9x and MSE =209,013. a. Develop a point estimate of the starting salary for a student with a GPA of 3.0 (to 1 decimal). $ b. Develop a 95% confidence interval for the mean starting salary for all students with a 3.0 GPA (to 2 decimals). $ ( , ) c. Develop a 95% prediction interval for Ryan Dailey, a student with a GPA of 3.0 (to 2 decimals). $ ( , )

A school counselor has been working with a group of six-graders with special needs. She hypothesized that students like her group may have higher depression scores compared to the national average for six-graders. So she assessed her group of students with a depression scale for children and compared the scores to the national average through a t test. The t statistic turned out to be .20. Using a significance level of .01, what decision should she make regarding the null hypothesis?

A.Postpone any decisions until a more conclusive study could be conducted

B.There is not enough information given to make a decision

C.Reject it

D.Fail to reject it

The director of admissions at a large university advises parents of incoming students about the cost of textbooks during a typical semester. He selected a sample of 100 students and recorded their textbook expenses for the semester. He then calculated a sample mean of $675.60 and a sample standard deviation of $45.20. You may assume that the distribution of textbook expenses is approximately normally distributed.

(a) Is there sufficient evidence that the population mean textbook expense per semester is above $665? You should justify your answer with a hypothesis test at the 5% significance level.

(b) Construct a 95% confidence interval estimate of the population mean textbook expense per semester.

Please do not include any image.

A sample of students from an introductory psychology class were polled regarding the number of hours they spent in studying for the last exam. All students anonymously submitted the number of hours on a 3 by 5 card. There were 24 individuals in the one section of the course polled. There data are below: 4.5, 22, 7, 14.5, 9, 9, 3.5, 8, 11, 7.5, 18, 20, 7.5, 9, 10.5, 15, 19, 2.5, 5, 9, 8.5, 14, 20, 8.

A. based on the sample results, find the 95% confidence interval.

B. Interpret the result

C.Do you expect a 90% confidence interval to be wider or narrower and why.

2. A student collected data on the number of large pizzas consumed, y, while x students were watching a professional football game on TV. The data from five games are given in table below. Number of students, x 2 5 6 3 4 Number of large pizzas, y 1 6 10 3 5 Please show work for full credit.

(e) Interpret your interval from part (d). (f) Calculate r2 (follow steps on page 92).

(g) Interpret r2.

(h) Compute linear correlation coecient r (follow steps on page 93).

(i) Interpret r.

2. Some fourth-grade students are practicing reading and comparing decimal numbers. They created two different numbers using decimal squares. Stephanie reads the decimal squares below as “zero and forty-five hundredths” and “zero and one tenth.” She says: “Zero and forty-five hundredths is thirty five hundredths greater than one tenth.” Her partner, Ingrid says: “That’s not right. The square on the left is thirty-five squares bigger than the one on the right.”

a) What does Stephanie seem to understand? What does Ingrid seem to understand?

b) What could you talk about with these students to help improve their understanding?

In 2017, 965 students registered for a course. Explain how you will use the random number table to select a simple random sample of 20 students.
Start from digit one of row 6.


Fill in the blanks
1. Bar chart is normally used for ___________ data.
2. Pie chart presents ___________ data.
3. A ____________________ is used to describe the relationship between two categorical variables.
4. A ___________ histogram is one with a single peak.
5. A ___________ histogram is one with two peaks.
6. Observations measured at the same point in time across individual units are called _______________ data.
7. Observations measured at successive points in time on a single unit are called _______________ data.

Students are to observe two or more adults unknown to the observer. The student must not be able to hear the subjects being observed and those being observed must not be wearing a uniform of any kind as this would provide information about their occupation to the observer. Students must describe the environment and the people being observed, i.e., age, gender, dress, etc. Discuss the nonverbal communication, i.e. eye contact, body position and any other nonverbal behavior. Provide your interpretation of the relationship between those being observed. Be very discrete and do not have a conversation with those being observed. minimum 400 words and if you could provide academic articles references 2.

a. Is the t-test the appropriate test for this study?

b. yes, state why, using examples to support your agreement or if no, state why not, using examples to support your disagreement

An independent sample t-test would be used if a professor at FIU wanted to compare his calculus classes scores from the past two semesters. Class 1 had 20 students and an average of 70 and SD of 15. Class 2 had 25 students and an average of 74 standard deviation of 25. You have to use alpha .05 to determine if class 1 and 2 had a difference between scores by using the degrees of freedom on a normal distribution table.