## Solve Matrices Three Lines

Solve Matrices Three Lines for \$2 Only

Using matrixes, do the three lines 2x + 3y = -1, 6x + 5y = 0, and 2x – 5y = 7 have a common point of intersection? Explain.

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1. The probability of an offender having a speeding ticket is 35%, having a parking ticket is 44%, having both is 12%. What is the probability of an offender having either a speeding ticket or a parking ticket or both?

A. 67%

B. 91%

C. 55%

D. 79%

2. The possible values of x in a certain continuous probability distribution consist of the infinite number of values between 1 and 20. Solve for P(x = 4).

A. 0.03

B. 0.00

C. 0.02

D. 0.05

3. If the mean number of hours of television watched by teenagers per week is 12 with a standard deviation of 2 hours, what proportion of teenagers watch 16 to 18 hours of TV a week? (Assume a normal distribution.)

A. 4.5%

B. 4.2%

C. 2.1%

D. 0.3%

4. Which of the following is a discrete random variable?

A. The number of three-point shots completed in a college basketball game

B. The average daily consumption of water in a household

C. The weight of football players in the NFL

D. The time required to drive from Dallas to Denver

5.Which of the following is correct concerning the Poisson distribution?

## Mini Case: Will Leasing Fly at Continental? CFM 3 Ch 21 Minicase Will Leasing Fly at Continental? in \$28 only

1. Calculate the net advantage to leasing, using the expected residual value and assuming Continental can use all the tax benefits of ownership with a tax rate of 40% and straight line depreciation to the expected residual value. Assume that Continental issues 80% secured debt and 20% unsecured debt to finance a purchase.

a) Calculate rt–the project cost of capital.

b) Calculate the expected lease residual value per aircraft.

c) Calculate the quarterly CFAT per aircraft under the leasing option.

• Hint: It should be the same each quarter hroughout the term of the lease.
• The lease payment is tax deductible.
• Under the leasing option Continental forgoes the depreciation tax deduction.

d) Calculate the NAL.

• Assume quarterly compounding to match the lease payments.
• Continental’s required return on the asset—r, is given.
• Assume no incremental difference in operating expenses between the purchasing and leasing options.
• Assume that the lessor claims the ITC.

2.  Calculate the net advantage to leasing, assuming Continental cannot use any of the tax benefits of ownership and the residual value is (i) the expected residual value, (ii) \$50 million, and (iii) \$10 million

## MATH 533 Applied Managerial Statistics Entire Course

MATH 533 Applied Managerial Statistics Entire Course

MATH 533 Week 1
MATH 533 Week 1 Homework Problems (MyStatLab)
MATH 533 Week 1 Graded Discussion Topics
MATH 533 Week 1 Data Organization and Analysis – Quiz

MATH 533 Week 2
MATH 533 Week 2 Homework Problems (MyStatLab)
MATH 533 Week 2 Graded Discussion Topics
MATH 533 Week 2 Course Project – Part A (SALESCALL Inc.)

MATH 533 Week 2 Quiz

## Four Questions Algebra

Four Questions Algebra

1. According to Fidelity Investment Vision Magazine, the average weekly allowance of children varies directly as their grade level. In a recent year, the average allowance of a 9th-grade student was 9.66 dollars per week. What was the average weekly allowance of a 4th-grade student?
2. Sketch the graph of each line

Y= –  x+1

1. Simplify

(43 ) 4

1. Simplify

− 10x 4 + 20x 2 + 12x

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## Background for Discussion about Data Collection Integrity

Background for Discussion about Data Collection Integrity

Conclusions of statistical inference are meaningless if the data are not collected properly!

Before beginning a unit on frog anatomy, a seventh-grade biology teacher gives each of the 24 students in the class a pretest to assess their knowledge of frog anatomy. The teacher wants to compare the effectiveness of an instructional program in which students physically dissect frogs with the effectiveness of a different program in which students use computer software that simulates the dissection of a frog. After completing one of the two programs, students will be given a post-test to assess their knowledge of frog anatomy. The teacher will then analyze the changes in the test scores (their score on the post-test minus their score on the pretest). Suppose the teacher decides to allow the students to select which instructional program on frog anatomy (physical dissection or computer simulation) they prefer to take. Furthermore, suppose that 11 students choose actual dissection and 13 students choose computer simulation. Here are the results in a test of significance to compare the two groups:

 Computer Simulation Group Student Pretest Posttest Difference (posttest-pretest) A 58 88 30 B 48 78 30 C 59 89 30 D 55 85 30 E 54 84 30 F 60 90 30 G 48 78 30 H 53 83 30 I 47 77 30 J 56 86 30 K 55 85 30 L 77 88 11 M 75 87 12 Mean 27.2 St Dev 6.95

 Actual Frog Dissection Group Student Pretest Posttest Difference (posttest-pretest) N 88 98 10 O 78 86 8 P 89 99 10 Q 85 93 8 R 84 94 10 S 90 98 8 T 78 88 10 U 83 91 8 V 77 87 10 W 86 94 8 X 85 95 10 Mean 9.1 St Dev 1.04

The teacher uses a two sample significance test of means to make a comparison between the two groups. She tests the hypothesis that students who use the computer simulation will see a greater improvement in their scores.

1. Null & Alternate Hypotheses
1. H0: μ1 = μ2
2. HA: μ1 > μ2
2. Test statistic: t = 9.27
3. p-value = 0.000
4. Reject H0. Evidence shows that students who use the computer simulation will see a greater improvement in their scores. In fact, since the p-value is 0, there is strong evidence that this is the case.

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## NOVA Math 271 Project: Throwing Up Tennis Balls

NOVA Math 271 Project: Throwing Up Tennis Balls

NOVA Math 271 Project: Throwing Up Tennis Balls

NAME:____________________

Objective:

You will throw a ball (preferably a tennis ball or other “soft ball”) straight up in the air, releasing the ball at shoulder height. Based on data collected, you will calculate its position function, its velocity function, and its acceleration function. Based on those functions you will answer questions below. Remember, in meters, the position function for a ball in free-fall is y(t) = -4.9t2 + v0t + y0.

What you will turn in to me: You will turn into me a poster or Powerpoint or report that shows:

a. A picture or drawing of you throwing the ball.

b. This Project Paper with the answers to questions 2-10, showing all calculations.

c. A nice, clear graph showing all three functions graphed on the same coordinate axes.

Part 1: The Equations:

## MATH 110 All Quizzes

MATH 110 All Quizzes

Following quizzes are available in the answer:

1. MATH 110 Quiz 1
2. MATH 110 Quiz 2
3. MATH 110 Quiz 3
4. MATH 110 Quiz 4

Note: This is A+ quality answer in discounted price.

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## MATH 156 Week 2 Checkpoint Answers

MATH 156 Week 2 Checkpoint Answers in \$2.50 only Text Section Page Numbers Exercises
Section 2.1 pp. 70–72 2, 4, 20, 24, 26
Section 2.2 pp. 85–88 4, 16, 24
Section 2.3 pp. 102–105 12, 22, 26
Section 2.4 pp. 122–124 2, 6
Chapter 2 Review pp. 126–127 6, 8, 12, 14, 16

## Study Conducted by Research Department in Pharmaceutical Company

Study Conducted by Research Department in Pharmaceutical Company in \$7 only… For a study conducted by the research department of a pharmaceutical company, 240 randomly selected individuals were asked to report the amount of money they spend annually on prescription allergy relief medication. The sample mean was found to be \$17.60, with a standard deviation of \$5.50. A random sample of 245 individuals was selected independently of the first sample. These individuals reported their annual spending on non-prescription allergy relief medication. The mean of the second sample was found to be \$18.40, with a standard deviation of \$4.30. As the sample sizes were quite large, it was assumed that the respective population standard deviations of the spending for prescription and non-prescription allergy relief medication could be estimated by the respective sample standard deviation values given above.

Construct a 95% confidence interval for the difference µ1 – µ2 between the mean spending on prescription allergy relief medication (µ1) and the mean spending on non-prescription allergy relief medication (µ2).

Summary of sample statistics

Size Mean Std. Dev.

Sample 1 240 17.6 5.5

Sample 2 245 18.4 4.3

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## DQ for Math 110-Algebra

DQ for Math 110-Algebra Two friends are both on a local running team. They run at the exact same rate of 7 miles per hour. They are running the exact same race course, but one friend starts running an hour after the other friend.

• Does a two-equation, two-variable system of equations that model their distances from the starting line have one solution, no solution, or infinite solutions?
• What if the two friends start the race at the same time?

Let the y-axis be distance and the x-axis be time, where t=0 is when the first runner begins.

Give an example of a second-degree polynomial equation that can be solved by factoring.

• Show how to factor the problem and give the solution.
• Explain how to solve the problem using the quadratic formula and show that the quadratic formula will provide the same solution.

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## Nonparametric Test

What nonparametric test is used when the assumptions for the parametric ANOVA cannot be met? Its purpose is to test whether three or more populations are equal. The data must be at least ordinal scaled.

A.  Students’ t

B.  Kruskal- Wallis

C.  Mann-Whitney

D.  ANOVA 