A biological psychologist wants to know if physical exercise changes reaction speed in elderly people.   A total of 18 older volunteer participants were found. One sample of n = 9 subjects received an exercise treatment, while the second sample (n = 9) of participants were given stretching lessons for the same amount of time per week. Reaction speed was tested on the computer after six weeks of treatment. Reaction speed was measured in milliseconds. Data shown below.

Why do you use this type of statistical test? _________

What is the I.V.? ___________________   What is the D.V.? ______________________

Use the data below to fill in the blanks to compute your t_calculated.

stretch group exercise group

n_stretch = 9           df_stretch = 8   n_exercise = 9              df_exercise = 8

∑X_stretch = 450        M_Stretch = 50 ∑X_exercise = 390            M _Exercise = 43.3

SS _stretch = 260    S²_stretch  = _____ SD_stretch = _____ SS_Exercise = 376   S²_Exercise = ______ SD_Exercise = ______

Use the 4 step method for hypothesis testing.

Step 1.

Step 2. alpha = .05, 2 tailed test

Step 3. Calculate your test statistic (t_calculated) (show formulas and work)

t_calculated = M_stretch – M_exercise / S_{M1– M2}

T_calculated = ___________

Step 4. State your conclusion about the null hypothesis:       Reject        or       Retain

Summarize your results in APA format.

Answer the following essay questions:

1.Facing with the changes of economic environment due to the outbreak of coronavirus, the CEO of Samson Corporation, a famous machinery manufacturer, is thinking about costs cutting. You are the CFO of the corporation and are required to give suggestions. Please list five ways from different dimensions in cost cutting and explain in detail.

2.You are the CEO of a car manufacturer which is facing a declining demand of its products. A consultant suggests that the implementation of quality concepts will increase product demand. What do you think? If your answer is yes, discuss the relationship between quality and product demand; if your answer is no, give reasons to support your answer. What do you think the relationship between quality and production cost? Explain.

Actuary and trustee reports indicate the following changes in the PBO and plan assets of Douglas-Roberts Industries during 2018: Prior service cost at Jan. 1, 2018, from plan amendment at the beginning of 2015 (amortization: $5 million per year) $ 25 million Net loss—AOCI at Jan.1, 2018 (previous losses exceeded previous gains) $ 112 million Average remaining service life of the active employee group 10 years Actuary's discount rate 5 % ($ in millions) Plan PBO Assets Beginning of 2018 $ 800 Beginning of 2018 $ 600 Service cost 70 Return on plan assets, 6% (8% expected) 36.0 Interest cost, 5% 40.0 Loss (gain) on PBO (19 ) Cash contributions 106 Less: Retiree benefits (40 ) Less: Retiree benefits (40 ) End of 2018 $ 851.0 End of 2018 $ 702.0 Required: 1-a. Determine Douglas-Roberts' pension expense for 2018. 1.b, 2. to 4. Prepare the appropriate journal entries to record the pension expense, to record any 2018 gains and losses, to record the cash contribution to plan assets and to record retiree benefits.

1. Explain the logic behind the application purchasing power price theory to explain changes in the spot exchange rate.

2. Assume US interest rates are generally above foreign interest rates.

a. what does this sideway about the future strength or weakness of the dollar based on the IFE (international Fisher effect)?

b. should US investors invest in foreign securities if they believe in the IFE?

c. should foreign investors invest in US securities if they believe in the IFE?

Question:

Recognize how changes in supply and demand affect market outcomes and explain the effect of government regulation on prices.

Note: Use your own words and be sure to support your statements with logic and arguments.

if you are outside of the health weight category what lifestyle changes can you make to get to health weight?

B why might BMI not be a valid assessment of health status?

C do you believe it is helpful for individuals to know their BMi? why or why not

D reflect on how you felt completing the BMI assessment activity and what you take forward from this activity.

can you talk for yourself What changes you made (or not) in your eating habits? Be specific and explain.

and Are you following dietary intake and physical activity PLAN OF ACTION? If not, what are the barriers that you are still facing? How can you try to overcome these barriers

What happens to the observer's local night sky as the observer's latitude gradually changes:

A. from the equator gradually towards the north pole

B. as local time passes from sunset to sunrise?

C. as local time passes over the course of several weeks and months?

What is the GDP, GDP per capita, human development index and changes in these statistics over time in Panama (at least three years)?

Link to what sources used.

Describe HDI in more writing and the purpose of these statistics.

Recognize how changes in supply and demand affect market outcomes and explain the effect of government regulation on prices?

Use your own words and be sure to support your statements with logic and arguments.

• Please note that word limit for discussion is 150 words along with two constructive comments
• please attach the references
• Without hands-write
• Without pilgrim

the price, quantity, other factors that effect the demand and supply when the price is fixed.