For the following questions, identify the type of test that should be used. Simply use the corresponding letter: A) One-sample z test (for a mean); B) One-sample t-test; C) One-sample z-test for a proportion (or a chi-squared goodness-of-fit); D) Chi-square goodness of fit (and a z-test is not appropriate); E) Two-sample z-test for a difference between proportions (or a chi-squared test for independence); F) Chi-square test for independence (and a z-test is not appropriate); G) Simple regression; H) Multiple regression; I) Two-independent samples t-test (with homogeneity of variance); J) Two-independent samples t-test (without homogeneity of variance);       K) Two-related samples t-test; L) One-way (independent measures) ANOVA; M) One-way Repeated measures ANOVA; N) Two-way ANOVA (independent, mixed, or repeated measures); O) Mann-Whitney; P) Wilcoxon; Q) Kruskal-Wallis; R) Friedman; If you are going down the interval/ratio branch, it is safe to use parametric measures, unless something is directly stated that clearly indicates otherwise, or unless the data strongly and unambiguously indicates otherwise. Similarly, it is safe to assume homogeneity of variance unless it is clearly indicated otherwise. Do not try to analyze whether or not the experiment is tenable or practical or flawless. This is not your concern right now. Most of the below were written by students in this class.

7.         Suzie wants to see if attending group counseling sessions affects the frequency of fights at-risk children are involved in. She counts the number of fights six children were involved in the month preceding group counseling, the month during group counseling, and the month following group counseling. The data is below. The null hypothesis is that counseling does not affect the number of fights.

                                    1          2          3          4          5          6

Before        20         20         21         20         37         37                                                        

            During   25         11         20         11         10         11                                                        

            After                 5          0          4          1          0          7                     

8.         Arlene thinks that the agricultural output of a farm is affected by how many days a farmer works and the size of the farm.

9.         We want to know whether cats or dogs take longer to eat their dinner. The data is found below.

            Cats:                 8, 10, 19, 11, 3, 16, 14, 12, 6                      Dogs:    8, 10, 10, 11, 9, 11, 10, 12, 9

ou are considering two different strategies for a savings account that you intend to close when you retire exactly 29 years from today. For Strategy 1, deposit $1,750 per quarter for 8 years (first deposit today; last one exactly 8 years from today); no new deposits will be made after the end of the deposit period, but interest continues to accrue until the account is closed. For Strategy 2, you’ll make your first quarterly deposit exactly 8 years from today, each quarterly deposit also equals $1,750 , and you’ll continue making quarterly deposits for 21 years, so that you make the final deposit exactly 29 years from today when you close the account. The savings rate always is 7.5% compounded quarterly. What will strategy 1 accumulate at retirement?

ou are considering two different strategies for a savings account that you intend to close when you retire exactly 29 years from today. For Strategy 1, deposit $1,750 per quarter for 8 years (first deposit today; last one exactly 8 years from today); no new deposits will be made after the end of the deposit period, but interest continues to accrue until the account is closed. For Strategy 2, you’ll make your first quarterly deposit exactly 8 years from today, each quarterly deposit also equals $1,750 , and you’ll continue making quarterly deposits for 21 years, so that you make the final deposit exactly 29 years from today when you close the account. The savings rate always is 9.5% compounded quarterly.

What will strategy 1 accumulate at retirement?

Question Workspace

• Check My Work (3 remaining)

JAVA

(1) Create two files to submit:

• Payroll.java - Class definition
• PayrollClient.java - Contains main() method

Build the Payroll class with the following specifications:

• 4 private fields
  • String name - Initialized in default constructor to "John Doe"
  • int ID - Initialized in default constructor to 9999
  • doulbe payRate - Initialized in default constructor to 15.0
  • doulbe hrWorked - Initialized in default constructor to 40
• 2 constructors (public)
  • Default constructor
  • A constructor that accepts the employee’s name, ID, and pay rate as arguments. These values should be assigned to the object’s name, ID, and payRate fields.
• 7 public member methods (mutators, accessors, and other) (8 pts)
  • getName()
  • getID()
  • setPayRate() & getPayRate()
  • setHrWorked() & getHrWorked()
  • A method named grossPay that returns employee’s gross pay (=hrWorked * payRate)

(2) In main(), create two Payroll objects: one use the info inputted by the user, and the other use the default constructor, and print the info for each employee (2 pts)

Ex:

Enter the name, ID, pay rate, and hours worked of an employee:
Linda Smith
1234
20.5
35


Employee Records: 
Name            ID           Pay Rate      Hrs Worked     Gross Pay 
Linda Smith     1234         $20.50/hr     35.0          $717.50
John Doe        9999         $15.00/hr     40.0          $600.00

A sample of Rh-105 (104.906 g/mol) has an activity of 4.89 x 1021 Bq. What mass of Rh-105 is lost after 7 minutes?

Calculate the answer ____________ g Rh-105 is lost.

Fresh water from rivers and lakes varies in acidity/alkalinity depending on the rocks and soils it runs over. Granite country yields water that is slightly acidic, while water from limestone country is slightly alkaline. Acidity and alkalinity are measured on a pH scale, on which 7 is neutral, values below 7 are acidic and values above 7 are alkaline. pH can change due to pollution or due to waste from biomass such as algae.

A certain river, fed by various tributaries, usually has a pH of about 6.4 (a bit acidic). The data below shows pH values from randomly-selected sites on this river and its tributaries.

pH
5.7
5.7
5
5.8
4.6
4.7
4.7
5.4
5.9
6
5.4
5.9
5.3
5.8
6
5.3
5.2
5.8
5.5
5.9
5.6
6.3
6.4
6.5
6.6
6.1
6.3
6.9
6.7

(a) Provide a graph of the data distribution. Bear in mind that distribution shape and outliers may be important. [4 marks]

(b) How much evidence is there that the pH of water in this river system has changed?
Evaluate the evidence using a hypothesis test with a significance level of 1%. Take care to state and evaluate all assumptions, and provide an appropriate conclusion. [11 marks]

(c) Provide a 99% confidence interval for the mean pH in this river system. [3 marks]

ABC book store is selling business books, magazines and stationeries. The following transactions were occurred in February 2020 (GST inclusive).

Feb.     6          Purchased books from Book Depository $880, terms 2/7, n/30.

            7          Paid freight on February 6 purchase $44.

            8          Sold inventory to customers $990, terms n/30. The inventory cost $600.

            10        Returned $99 books to Book Depository.

            13        Paid Book depository in full.

Required

Prepare the journal entries to record the transactions.

Estimate House Paints Demand for Sherwin-Williams

1) What is regression equation for paint sales using multiple linear regression model? Please include regression results using Excel?)

2) If A=180, P=$14, and M=20, what is an approximate 95 percent prediction interval for paint sales?

Population distribution :

Population distribution of Japan is 334.66/km2 on an area of 377,930 km2.

Japan is politically divided into 8 regions and 47 prefectures.

(all primary and secondary regions of high population density lie on the coast; one-third of the population resides in and around Tokyo on the central plain (Kanto Plain))

• Hokkaido: 66.4 ppl/km2
• Tōhoku: 130 ppl/km2
• Kantō: 1300 ppl/km2
• Chūbu: 300 ppl/km2
• Kansai: 830 ppl/km2
• Chūgoku: 240 ppl/km2
• Shikoku: 220.3 ppl/km2
• Kyūshū: 332.4 ppl/km2

Population Projections :

Japan population will decrease to 100 million people by 2049 from where it is now at 127 million and will continue to decrease to just above 50 million by 2100.

Japan’s population decline has several social and economic repercussions, such as one-third of the population being elderly by 2036 and a lack of working-age people to help keep the economy growing.

NEED A BRIEF SUMMARY OF THIS PART PLEASEEE !!