1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kati45 [8]
3 years ago
8

A sales manager wanted to determine if increasing sales commissions by 5% would increase employee satisfaction. Her analyst dete

rmined the p-value was 0.04. (Use α = 0.05.)
Based on the above output, what is the correct conclusion for the Wilcoxon Signed Rank Test?

a. We do not have evidence that there is a difference in population median employee satisfaction rating before and after the commission change.
b. We do not have evidence that there is a difference in sample median employee satisfaction rating before and after the commission change.
c. We have evidence that there is a difference in population median employee satisfaction rating before and after the commission change.
d. We have evidence that there is a difference in sample median employee satisfaction rating before and after the commission change.
Mathematics
1 answer:
Dafna11 [192]3 years ago
4 0

Answer:

c. We have evidence that there is a difference in population median employee satisfaction rating before and after the commission change.

Step-by-step explanation:

Pvalue is less than the alpha-level:

If the pvalue is less than the alpha-level, we have that there is sufficient evidence of the hypothesis for the population mean/median/standard deviation we are testing.

In this question:

Pvalue less than the alpha-level, so there is evidence that there is a difference in the population median. This means that the correct answer is given by option C.

You might be interested in
??? Anybody know <br><br><br><br><br> ....
Alinara [238K]

Answer:

-7 is greater

Step-by-step explanation:

In negetive intergers, the opposite happens. The greater number becomes smaller and the smallet becomes greater as the negative sign '-' is added.

Hope this will help

4 0
3 years ago
Kristy asks Lonnie to think of a number add it with 3 to it multiply the sum by 2 and the subtract 6. let (n) stand for Lonnies
Yanka [14]

Answer:

2(n + 3) - 6 is the expression that represents the final number.

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
A container is filled with 100 grams of bird feed that is 80% seed. Tom and Sally want to mix the 100 grams with bird feed that
marta [7]

Answer:

Initially, we had:

100 grams of a mixture that is 80% seed, (or 0.8 in decimal form)

This means that the quotient between the mass of seeds and the total mass of the mixture is equal to 0.8

Then the mass of seeds, x, can be calculated as:

x/100g = 0.8

x = 0.8*100g

x = 80g

We also have another mixture, that is 5% seed (or 0.05 in decimal form)

This means that in X grams of this mixture, there will be y grams of seeds, such that:

y/X = 0.05

y = 0.05*X grams

Now, we want to create a mixture that is 40% seeds (or 0.4 in decimal form).

Let's do this.

If we add X grams of the 5% mixture, the total mass will be:

M = 100g + X.

The total mass of seeds will be:

m = 80g + X*0.05

and we want that the quotient between the mass of seeds and the total mass to be exactly 0.4

m/M = 0.4

(80g + X*0.05)/(100g + X) = 0.4

Let's solve this for X.

(80g + X*0.05) =  0.4*(100g + X)

80g + X*0.05 = 40g + X*0.4

80g - 40g = X*0.4 - X*0.05

40g = X*0.35

40g/0.35 = X = 114.2g

If we want the mixture to be exactly 40% seeds, we need to add 114.2g of the 5% mixture. (We already can see that Tom is closer to the exact result than Sally)

If we add 114g, like Tom wants, we will have:

M = 100g + 114g = 214g

m = 80g + 0.05*114g = 85.7g

m/M = 85.7g/214g = 0.4005

This is a really good aproximation, if we write this in percentage form this would be:

0.4005*100% = 40.05%

8 0
3 years ago
An educational psychologist wishes to know the mean number of words a third grader can read per minute. She wants to make an est
nirvana33 [79]

Answer:

The 80% confidence interval for the mean number of words a third grader can read per minute is between 40.4 wpm and 40.8 wpm.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.8}{2} = 0.1

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.1 = 0.99, so z = 1.28

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.28*\frac{4.1}{\sqrt{840}} = 0.2

The lower end of the interval is the sample mean subtracted by M. So it is 40.6 - 0.2 = 40.4 words per minute.

The upper end of the interval is the sample mean added to M. So it is 40.6 + 0.2 = 40.8 words per minute.

The 80% confidence interval for the mean number of words a third grader can read per minute is between 40.4 wpm and 40.8 wpm.

3 0
3 years ago
Miss Sandy is fencing in her rectangular backyard which is 3x^2 feet wide and 4xy + 5x^3 y^2 feet long. Find perimeter of yard H
hjlf

Given:

Width of rectangular backyard = 3x^2 feet

Length of rectangular backyard = 4xy+5x^3y^2 feet

To find:

The perimeter of yard.

Solution:

Formula or perimeter of a rectangle is

Perimeter=2(length +width)

Using this formula, the perimeter of the rectangular backyard is

Perimeter=2(4xy+5x^3y^2+3x^2)

Perimeter=8xy+10x^3y^2+6x^2

Therefore, the perimeter of the rectangular backyard is 8xy+10x^3y^2+6x^2 feet. So, 8xy+10x^3y^2+6x^2 feet fencing is needed.

4 0
3 years ago
Other questions:
  • Mr. Parker's grocery bill before paying sales tax was $98. The final amount he had to pay was $103.88. What is the sales tax per
    9·1 answer
  • What is the mixed numbe 4 3/4 multiplied by 2
    11·2 answers
  • Which equation represents the law of sines for triangle abc?
    12·2 answers
  • Whats is 20x6+2x0+1 ????
    14·2 answers
  • Given the two sets:
    13·1 answer
  • Daisy is remodeling her home. The rectangular floor in the living room is 18 feet long and 9
    12·1 answer
  • What is the percentage of 1/4
    10·2 answers
  • HELP!!
    13·1 answer
  • 9<br> Write as a percentage.<br> 10
    8·1 answer
  • Solve the following equation algebraically
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!