Given two dependent random samples with the following results:

Population 1 32 35 45 46 43 45 30

Population 2 19 40 31 32 30 47 42

Use this data to find the 90% confidence interval for the true difference between the population means. Assume that both populations are normally distributed.

Step 1 of 4: Find the point estimate for the population mean of the paired differences. Let x1 be the value from Population 1 and x2 be the value from Population 2 and use the formula d=x2−x1 to calculate the paired differences. Round your answer to one decimal place.

Step 2 of 4: Calculate the sample standard deviation of the paired differences. Round your answer to six decimal places.

Step 3 of 4: Calculate the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places.

Step 4 of 4: Construct the 98% confidence interval. Round your answers to one decimal place.

Suppose a profit-maximizing firm can produce 100 units of a hypothetical product, wendals (selling at a price of $1 per unit), by combining labor, land, capital, and entrepreneurial ability in each of the four ways shown in the table below. Assume further that the firm can hire labor at $6 per unit, capital at $4 per unit, and entrepreneurship at $2 per unit.

   TECHNIQUES

3. The total revenue for this firm is________ dollars.

4. The price of land is _________ dollars.

5. The cost of technique B is _______ dollars.

6. The profit for technique C is ________ dollars.

7. The amount of land embedded in technique B is _________ units.

8. The amount of capital embedded in technique C is _________ units.

9. This firm will earn a profit of ______ dollars.

10. If the price of wendals increases to $2, then which technique will this firm use? ____________

Show all work and answer steps in complete sentences pls list them ex. Step 1 underline steps

A psychologist wants to compare the group of people who exercise regularly and the group of people who do not exercise regularly on the level of stress. She took a sample of 8 people from each population. These numbers indicate the participants’ stress levels. Can she conclude that there is a difference between two groups on the level of stress? Conduct four steps of hypothesis testing. Use a two-tailed test with α = .05.

Not exercise            Regular Exercise

3                   4
7                   4
8                     3
5                     2
4                   5
7                                         1
6                   1
8                     4

SS = 24                      SS = 16

Step 1: State your null and research hypotheses.
Step 2: What is the df for two groups combined?
Step 3: What are the cut-off points?
Step 4: Find the pooled variance.
Step 5: Find the estimated standard error.      

Evaluate ??? ?.???? where ?? ? is an Electric field which is given as ?? ? = ?3????3??2???? ??? + 6??3??2?????? ??? ? 8??2??2??2???? ??? , for a surface bound by a cuboidal shape having dimensions, ?2 ? ?? ? 0; 1 ? ?? ? 3; 0? ?? ? 4

You are a project team manager, and your team members report each day to you to receive their primary assignments.   Not every team member is as efficient as another with particular kinds of tasks.   

a. Given the task roster, complexity levels, and time estimates, assign team members to tasks to optimize efficiency.   Also, determine how long it will take for the team to complete their routine tasks.

b.You want to focus on efficiency, so you assign ratings to each team member’s performance of each task.   Reassign the tasks to obtain the highest efficiency possible (a perfect score is 100).

c. Compare the results with those from the first question for this problem. What is the average rating of the assignment?   What other criteria could be used to assign tasks to team members?

1. Trend Analysis

   Critelli Company has provided the following comparative information:

   	Year 5		Year 4		Year 3		Year 2		Year 1
   Net income	$1,283,300		$1,106,300		$929,700		$794,600		$673,400
   Interest expense	436,300		398,300		344,000		262,200		208,800
   Income tax expense	410,656		309,764		260,316		206,596		161,616
   Average total assets	7,676,786		6,777,477		5,789,545		4,915,349		4,181,043
   Average stockholders' equity	2,629,713		2,353,830		2,056,858		1,822,477		1,595,735

   You have been asked to evaluate the historical performance of the company over the last five years.

   Selected industry ratios have remained relatively steady at the following levels for the last five years:

   	Industry Ratios
   Return on total assets	22.1 %
   Return on stockholders’ equity	45.6 %
   Times interest earned	4.6

   Instructions:

   Calculate three ratios for Year 1 through Year 5. Round to one decimal place.

   a. Return on total assets:

   Year 5	%
   Year 4	%
   Year 3	%
   Year 2	%
   Year 1	%

   b. Return on stockholders’ equity:

   Year 5	%
   Year 4	%
   Year 3	%
   Year 2	%
   Year 1	%

   c. Times interest earned:

   Year 5
   Year 4
   Year 3
   Year 2
   Year 1

You plan to invest $4 million in the construction of an oil well which has a potential revenue of $10 million. The oil well will be located in the Golf of Mexico. As we all know, this region is constantly hit by hurricanes. Assuming that if there is a hurricane of category 1 or 2, this will disrupt your production and the well will produce half its capacity, and if there is a category 3 or 4, your well will produce one fifth of its capacity, if there is a category 5 your well will be closed. In order to reduce the risk on your investment you plan to buy an insurance policy. One unit of this policy cost $1 and will pay $3 if the region is hit with a storm of category 1 or 2, $5 if the region is hit with a storm of category 3 or 4, and $7 if the region is hit by a storm of category 5. We know from the weather prediction that there is 20% chance that the region will be hit with a category 1 or 2 storm, 20% for a category 3, or 4, and 20% for a category 5, 40% chance that the region will not be hit.

1. What is the expected rate of return on your investment if you buy u units of this policy?

2. What is the variance of the rate of return on your investment if you buy u units of this policy?

3. What is the number of units that will minimize variance, and what is the corresponding rate of return?

Trend Analysis

Critelli Company has provided the following comparative information:

You have been asked to evaluate the historical performance of the company over the last five years.

Selected industry ratios have remained relatively steady at the following levels for the last five years:

Instructions:

Calculate three ratios for Year 1 through Year 5. Round to one decimal place.

a. Return on total assets:

b. Return on stockholders’ equity:

c. Times interest earned:

Aritelli Company has provided the following comparative information:

You have been asked to evaluate the historical performance of the company over the last five years.

Selected industry ratios have remained relatively steady at the following levels for the last five years:

Instructions:

Calculate three ratios for Year 1 through Year 5. Round to one decimal place.

a. Return on total assets:

b. Return on stockholders' equity:

c. Times interest earned:

1) You test a new drug to reduce blood pressure. A group of 15 patients with high blood pressure report the following systolic pressures (measured in mm Hg): ̄y s before medication: 187 120 151 143 160 168 181 197 133 128 130 195 130 147 193 157.53 27.409 after medication: 187 118 147 145 158 166 177 196 134 124 133 196 130 146 189 156.40 27.060 change: 0 2 4 -2 2 2 4 1 -1 4 -3 -1 0 1 4 1.133 2.295 a) Calculate a 90% CI for the change in blood pressure. b) Calculate a 99% CI for the change in blood pressure. c) Does either interval (the one you calculated in (a) or (b)) include 0? Why is this important? d) Now conduct a one sample t-test using μ = 0, and α = .10. Are the results consistent with (a)? e) Finally, conduct a one sample t-test using μ = 0, and α = .01. Are the results consistent with (b)? PLEASE TELL HOW TO GET ALPHA I USE .05 AND GOT VALUE 2.145