Tag: Mathematics

Instructions

Scenario (information repeated for deliverable 01, 03, and 04)

A major client of your company is interested in the salary distributions of jobs in the state of Minnesota that range from $30,000 to $200,000 per year. As a Business Analyst, your boss asks you to research and analyze the salary distributions. You are given a spreadsheet that contains the following information:

• A listing of the jobs by title
• The salary (in dollars) for each job
• You have previously explained some of the basic statistics to your client already, and he really liked your work. Now he wants you to analyze the confidence intervals.
  

  Background information on the Data

  The data set in the spreadsheet consists of 364 records that you will be analyzing from the Bureau of Labor Statistics. The data set contains a listing of several jobs titles with yearly salaries ranging from approximately $30,000 to $200,000 for the state of Minnesota.

  What to Submit

  Your boss wants you to submit the spreadsheet with the completed calculations, answers, and analysis.

1) Berdine’s Chicken Factory has several stores in the Hilton Head, South Carolina, area. When interviewing applicants for server positions, the owner would like to include information on the amount of tip a server can expect to earn per check (or bill). A study of 500 recent checks indicated the server earned the following amounts in tips per 8-hour shift.

Amount of Tip ($)

Number

0 up to  20

200

20 up to 50

100

50 up to 100

75

100 up to 200

75

200 or more

50

a) What is the probability of a tip of $200 or more?

b) Are the categories “$0 up to $20,” “$20 up to $50,” and so on considered mutually exclusive?

c) If the probabilities associated with each outcome were totaled, what would that total be?

d) What is the probability of a tip of up to $50?

e) What is the probability of a tip of less than $200?

2) There are 100 employees at Kiddie Carts International. Fifty-seven of the employees are production workers, 40 are supervisors, 2 are secretaries, and the remaining employee is the president. Suppose an employee is selected:

a) What is the probability the selected employee is a production worker?

b) What is the probability the selected employee is either a production worker or a supervisor?

c) Refer to part (b). Are these events mutually exclusive?

3) There are 20 families living in the Willbrook Farms Development. Of these families, 10 prepared their own federal income taxes for last year, 7 had their taxes prepared by a local professional, and the remaining 3 by H&R Block.

a) What is the probability of selecting a family that prepared their own taxes?

b) What is the probability of selecting two families, both of which prepared their own taxes?

Subtract 9.463 – 5.972

Question 1 options:

	15.435
	3.491
	14.435
	3.591

Question 2 (5 points)

Add 451.6 + 0.89 + 30.78 + 82.9

Question 2 options:

	566.17
	566.27
	567.17
	566.18

Question 3 (5 points)

Simplify the expression 1.7(9 – 8.4)

Question 3 options:

	7
	1.12
	6.9
	1.02

Question 4 (5 points)

Divide 13.72 ÷ 4.9

Question 4 options:

	3.8
	.028
	2.8
	28

Question 5 (5 points)

Add 154.161 + 28.576 + 6.731

Question 5 options:

	189.578
	189.568
	189.478
	189.468

Question 6 (5 points)

Multiply 0.02 x 0.7

Question 6 options:

	0.014
	0.0014
	0.14
	1.4

Question 7 (5 points)

Add 4.41 + 3.95 + 46.52

Question 7 options:

	54.98
	53.88
	54.88
	53.98

Question 8 (5 points)

Divide 222 by 15.0

Question 8 options:

	148
	14.8
	1.48
	15.8

Question 9 (5 points)

Multiply 0.536 x 2.9

Question 9 options:

	3
	3.436
	1.5544
	1

Question 10 (5 points)

Simplify the expression (2.6)²

Question 10 options:

	6.76
	0.52
	5.2
	67.6

Question 11 (5 points)

Simplify the expression.

Question 11 options:

	4.786
	0.5
	5
	3.714

Question 12 (5 points)

Multiply 25.1 x 1.1

Question 12 options:

	27.72
	27.61
	28.71
	26.2

Question 13 (5 points)

Multiply 12.27 x 0.03

Question 13 options:

	0.003681
	0.3681
	3.681
	36.81

Question 14 (5 points)

Like fractional notation, _________ notation is used to denote a part of a whole.

Question 14 options:

	numerator
	denominator
	decimal
	sum

Question 15 (5 points)

Divide 8.568 ÷ 17

Question 15 options:

	15.04
	1.504
	5.04
	0.504

Question 16 (5 points)

Divide 2.1 ÷ 7

Question 16 options:

	13
	0.3
	1.3
	3

Question 17 (5 points)

Divide 42 by 0.06

Question 17 options:

	0.7
	70
	7
	700

Question 18 (5 points)

Subtract 18.18 – 1.841

Question 18 options:

	20.021
	16.339
	16.439
	21.021

Question 19 (5 points)

Simplify the expression (4.7)(100) – (4.7)(10)

Question 19 options:

	465.3
	0
	423
	90

Question 20 (5 points)

Subtract

4.2
– 1.911

Question 20 options:

	3.289
	2.289
	2.311
	3.000

Need help with my Discrete Math question – I’m studying for my class.

1. Consider the function h : X → Y defined by h(x) = x
2 − 2x.

(a) Show that if X = Y = R, then h is neither injective nor surjective.

(b) Let X = R, find Y ⊆ R such that h is surjective.

(c) Consider Y = Im(f), find X ⊆ R so that h is bijective.

question1: Write a short paragraph to describe/summarize the main findings in the table given below (8 lines max)

question 2: A cross-Sectional Survey was done to compare workplace psychosocial stressors and associated mental health status in six migrant groups. Write a short paragraph to summarize the main findings from the table given below (12 lines max).

I need this quick help with middle school math homework but need it in 3 hours……Write the problem and then the answer for each problem and make sure they are number correctly so answers do not get mix up

NEED the tutor free at PST 4/28/2021 2pm to 3:50 pm(which is about 2 hours after i post this ), I will post questions on starting 2pm.

1. Use the given transformation to evaluate the integral.

2. Set up the following using rectangular, cylindrical and spherical coordinates, then with whichever seems more appropriate, evaluate the triple integral.

4. Evaluate the double integral bounded by the general regions given. (rectangular coordinates).

5.Consider the function ( )= ^4−4 ^3. Determine the following for f(x) , if they apply :I will be very picky about work shown. Do not use a calculator

.a)x- and y– intercepts :

b)Intervals on which f(x) increases and decreases:

c)Absolute and relative maxima and minima:

d)Intervals of concavity:

e)Points of inflection:

f)Sketch = ( ) using the above information.

6.Use the definition of the definite integral (this involves a limit) to evaluate ∫3,1(x^2+1) . Use the Fundamental Theorem of Calculus to check your answer. Show all the steps.

7.Set up a definite integral that gives the area of the region between the graphs of ( )= ^2+2 +1 and ( )=2 +5. Sketch and shade the region. Then use your calculator to solve the integral.

You need to post 1 unique article/explanation about an experiment OR 1 unique article/explanation about an observational study. You should begin a new thread with your topic, and include:1.) A link to the website or upload the relevant file.2.) The requested explanation or calculation 3.) Format your post like this: “Observational Study: In this article, Gallup polled 200 people about ….” so that it is clear to everyone which topic you have chosen.4.) Use “Observational Study” or “Experiment” in the title (no quotation marks necessary).

Here are the details on the articles and discussion you should post to a new thread (choose only ONE):

1.) Observational Study:a.How was the sample collected? (Use appropriate statistics terminology: Simple Random Sample, Stratified Random Sample, Cluster Sample, Voluntary Response)

b. What is the sample size?

c.What was the response rate?

d.What variables were measured?

e.Were the results displayed in a graph? If so, what type of graph was used? If not, what type of graph would be appropriate for displaying this data?

f.What are potential sources of bias?

g.What could be done to improve this study?

2.) Experiment:

a.Who or what is in the sample? What is the sample size?

b. What is/are the treatments?

c.What is the design of the experiment? Is it one we learned in class?

d. Were the three principles of good experimental design (Randomization, Replication, Comparison/Control) used?

e. What are the response variables? Are these variables categorical or quantitative?

f.Were the results shown with a graph? If so, what kind of graph was used? If not, what kind of graph would be appropriate for displaying this data?

g.What are some potential lurking variables? Explain your reasoning.