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
Anton [14]
3 years ago
10

Last year my homeroom class

Mathematics
2 answers:
IrinaVladis [17]3 years ago
6 0

Answer:

12%

Step-by-step explanation:

Crazy boy [7]3 years ago
6 0

The formula is (new minus original)/ original

New = 22

Original = 25

22 - 25 = -3

-3 / 25 = -.12, or -12 percent. The percent decrease was 12 percent because the negative sign (-) indicates a decrease.

You might be interested in
Order from least to greatest-- 38%, 8/25, 0.41
Morgarella [4.7K]
I think the answer is 8/25, 38%, .41
6 0
4 years ago
Read 2 more answers
- Systems of Linear Equations & Inequalities
miv72 [106K]

Answer:

3.50

Step-by-step explanation:

3 0
2 years ago
A group of researchers wants to know whether men are more likely than women to contract a novel coronavirus. They surveyed two r
olasank [31]

Answer:

Test statistic Z= 0.13008 < 1.96 at 0.10 level of significance

null hypothesis is accepted

There is no difference proportion of positive tests among men is different from the proportion of positive tests among women

Step-by-step explanation:

<em>Step(I)</em>:-

Given surveyed two random samples of 390 men and 360 women who were tested

first sample proportion

                    p_{1} = \frac{360}{390} = 0.9230

second sample proportion

                  p_{2} = \frac{47}{52} = 0.9038

Step(ii):-

Null hypothesis : H₀ : There is no difference  proportion of positive tests among men is different from the proportion of positive tests among women

Alternative Hypothesis:-

There is difference between proportion of positive tests among men is different from the proportion of positive tests among women

 

Z = \frac{p_{1}- p_{2} }{\sqrt{PQ(\frac{1}{n_{1} }+\frac{1}{n_{2} }  } }

where

          P = \frac{n_{1}p_{1} +n_{2}  p_{2} }{n_{1}+n_{2}  }

         P =  0.920

Z= \frac{0.9230-0.9038}{\sqrt{0.920 X0.08(\frac{1}{390}+\frac{1}{52}  } )}

Test statistic Z =  0.13008

Level of significance = 0.10

The critical value Z₀.₁₀ = 1.645

Test statistic Z=0.13008 < 1.645 at 0.1 level of significance

Null hypothesis is accepted

There is no difference proportion of positive tests among men is different from the proportion of positive tests among women







7 0
3 years ago
Someone plz help me with These questions :u have to solve for x and show work
irakobra [83]
Ok so the first one is 
1.x=135
2.x=-23
3.x=3
4.x=70

5 0
3 years ago
What is the value of x in the figure above? Assume ↔B and ↔C are parallel.
Deffense [45]

Answer:

x=4

Step-by-step explanation:

180-58=26x+18

122=26x+18

122-18=26x

104=26x

4=x

6 0
3 years ago
Other questions:
  • Giselle graphs the function f(x) = x^2. Robin graphs the function g(x) = –x^2. How does Robin’s graph relate to Giselle’s?
    6·2 answers
  • If f(x)=2x^2+8,what is the positive value of x for which f(x)=136
    11·2 answers
  • A box contains 10 slips of paper, each with a different number from 1 to 10 written on it. If one slip is removed at random, wha
    9·2 answers
  • Which corresponds to the perimeter of triangle ABC?
    9·1 answer
  • Plz explain and help me
    14·2 answers
  • Tracy received a score of 85% on her quiz. If Tracey answered 9 questions incorrectly, how many questions were on her quiz?
    5·2 answers
  • This app deleted my question so im going to ask again. please help!!! due at 5:00
    6·2 answers
  • What is the equation of the line that passes through the point (-2,-1) and has a slope of 1?
    11·1 answer
  • Use the method of your choice to solve the following system of equations. Write your solution as a coordinate.
    8·1 answer
  • When you roll a pair of dice, there are several outcomes, as shown below:
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!