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
Iteru [2.4K]
2 years ago
14

Hello someone please help me

Mathematics
1 answer:
Naya [18.7K]2 years ago
6 0

Answer:

(2, -8)

Step-by-step explanation:

You might be interested in
identify the transformations that map rectangle A to rectangle A'. A) reflect over y-axis, reflect over line y = 5, then 3 units
LenaWriter [7]

Answer:7:8

Step-by-step explanation:answer

6 0
3 years ago
How does the increase in confidence level affect the interval width and margin of error?
meriva

Answer:

1. Three things influence the margin of error in a confidence interval estimate of a population mean: sample size, variability in the population, and confidence level. For each of these quantities separately, explain briefly what happens to the margin of error as that quantity increases.

Answer: As sample size increases, the margin of error decreases. As the variability in the population increases, the margin of error increases. As the confidence level increases, the margin of error increases. Incidentally, population variability is not something we can usually control, but more meticulous collection of data can reduce the variability in our measurements. The third of these—the relationship between confidence level and margin of error seems contradictory to many students because they are confusing accuracy (confidence level) and precision (margin of error). If you want to be surer of hitting a target with a spotlight, then you make your spotlight bigger.

8 0
2 years ago
Read 2 more answers
In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the fol
Julli [10]

Answer:

0.071,1.928

Step-by-step explanation:

                                                Downtown Store   North Mall Store

Sample size   n                             25                        20

Sample mean \bar{x}                         $9                        $8

Sample standard deviation  s       $2                        $1

n_1=25\\n_2=20

\bar{x_1}=9\\ \bar{x_2}=8

s_1=2\\s_2=1

x_1-x_2=9-8=1

Standard error of difference of means = \sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}

Standard error of difference of means = \sqrt{\frac{2^2}{25}+\frac{1^2}{20}}

Standard error of difference of means = 0.458

Degree of freedom = \frac{\sqrt{(\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}})^2}{\frac{(\frac{s_1^2}{n_1})^2}{n_1-1}+\frac{(\frac{s_2^2}{n_2})^2}{n_2-1}}

Degree of freedom = \frac{\sqrt{(\frac{2^2}{25}+\frac{1^2}{20}})^2}{\frac{(\frac{2^2}{25})^2}{25-1}+\frac{(\frac{1^2}{20})^2}{20-1}}

Degree of freedom =36

So, z value at 95% confidence interval and 36 degree of freedom = 2.0280

Confidence interval = (x_1-x_2)-z \times SE(x_1-x_2),(x_1-x_2)+z \times SE(x_1-x_2)

Confidence interval = 1-(2.0280)\times 0.458,1+(2.0280)\times 0.458

Confidence interval = 0.071,1.928

Hence Option A is true

Confidence interval is  0.071,1.928

4 0
3 years ago
The question to answer these is here.
Aleks04 [339]
The answer is B. Fluid ounces in a pinto fluid ounces in a gallon
4 0
3 years ago
Jorge has 235 baseball cards. If Keith were to double the number of baseball
Nana76 [90]
A because 2b is b times 2 and 235 is bigger
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the two functions below has the largest maximum y-value?f(x) = -3x^4 - 14g(x) = -x^3 + 2 A.There is not enough informat
    10·2 answers
  • PLZ HELP ASAP!!!!!!!!!!!!!!!!!
    13·1 answer
  • An arts supply store has 28 pounds of modeling clay to ship to a client. Each packing box can contain no more than
    11·1 answer
  • What vaule of x makes th question true? 3x+2(x-5)=50 a. 8 b.9 c.11 d.12
    9·1 answer
  • A bag contains 20 marbles of the same size that are blue, green, and red. The probability of picking a blue marble is 20%. The p
    15·2 answers
  • Given:
    7·1 answer
  • Why is the library not adding any more fairy tales
    5·2 answers
  • Can you help me on this one
    9·1 answer
  • Salary paid ra10,000 and still due rs2000 ​
    7·1 answer
  • Can anyone please help me with this?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!