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I don’t know how to handle this Statistics question and need guidance.

ASSIGNMENT 2

Due: June 8th, 2020 1:00 p.m. noon (ADT)

Problem 1 [15] A consumer’s advocate group would like to evaluate the average energy efficiency rating (EER) of window-mounted large-capacity (i.e. in excess of 7,000 BTU) air-conditioning units. A random sample of 36 such air-conditioning units is selected and tested for a fixed period of time. Their EER records are given the file EER.xlsx

a)

[8] Using the 0.05 level of significance and the critical value approach, is there evidence that the average EER is different from 9.0? [2] Find the p-value and interpret its meaning. [1] What kind of error might you have committed in part (a)? [4] Construct a 95% confidence interval for the mean.
[2] b) Hypotheses:

[1] c)Decision Rule:

[3] d)Calculations:

[2] e)Conclusions:

Problem 2 [10 marks] A professor in the school of business wants to investigate the prices of new textbooks in the campus bookstore and the competing off-campus store, which is a branch of a national chain. The professor randomly chooses the required texts for 8 business school courses and compares the prices in the two stores. The results are as follows:

Book

1

2

3

4

5

6

7

8

Campus Store ($)

55.00

47.50

50.50

38.95

58.70

49.90

39.95

41.50

Off-Campus Store ($)

50.95

45.75

50.95

38.50

56.25

45.95

40.25

39.95

At the .01 significance, is there any evidence of a difference in the average price of business textbooks between the two stores?
[2]a) State hypotheses in both symbols and words. [1] b)Test Statistic: [1] c)Decision Rule: [4] d)Calculate the Test Value: [2] e)Conclusion:

Problem 3[10 marks] Is there any relationship between the type of beverage ordered with lunch at a restaurant and the age of the customer? A random poll of 309 lunch customers in the city of Moncton was taken, resulting in the data displayed in the 3 x 3 contingency table below.
a)Use the p-value approach and α = 5% to address this question.

Age

Preferred Beverage

Coffee/Tea

Soft Drink

Other (juice, milk, etc)

16-30

26

95

18

31-45

41

40

20

46 and older

24

13

32

b)Hypothesis:

c)Decision rule:

d)Calculations (You may use the space in the table for certain appropriate calculations):

e)Conclusions:

f)[5 marks – 3 for calculations; 2 for conclusionsl Is there a significant difference in the proportion of 16-30 year-olds who prefer Coffee/Tea versus those who prefer Soft Drinks? Use a 95% confidence interval to answer this question. Show your calculations and draw your conclusions.5–8 pages finalView objectives for this assignment Go To: Assignment Details Scenario Learning Materials Reading Assignment My Work: Online Deliverables: Submissions Looking for tutoring? Go to Smarthinking Collapse All | Expand All Assignment Details As
Need help with my Business question – I’m studying for my class.

Part 2

Add the following in 2-3 pages (not including title page and reference page) of new information and content to your Unit 4 IP draft to your Key Assignment:
Develop 5 ethical standards to implement at your chosen facility.
Research 2 companies with ethical standards, and develop standards in your own words. 2 APA references are required.
How would you present this information to staff during orientation or training?
Describe this training.I need help please ????: online nursing assignment help
I’m working on a Music question and need guidance to help me study.

Choose TWO AUDIO examples (not video clips) from Unit 5 and write a 150-word journal that presents details of each song as well as comparisons. Utilize your textbook and the PowerPoint presentation for this assignment. Please comment on the instrumentation, melody, rhythm, timbre, form and text of each song. Audio examples are found in the modules area or click here.

__________

For this journal, please compare two audio examples from Unit 5 that you feel best represent the diversity of popular music in the 1970s. In other words, compare two songs that have very different musical styles.

__________

Your Journal should be around 150 words (5 pts), cover all of the topic points (5 pts), and be submitted on time (5 pts). There are 15 points possible for this assignment.

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