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
Naya [18.7K]
2 years ago
5

A small town had a population of 960 people last year. The population grew to 1200 people this year. By what percentage did the

population grow? Please show how you did the problem :)
Mathematics
1 answer:
Katen [24]2 years ago
4 0

Answer:

25%

Step-by-step explanation:

\frac{1200}{960}  \times 100 \%= 1.25\% \\

so it increases 25%

You might be interested in
Mike runs for the president of the student government and is interested to know whether the proportion of the student body in fa
Alik [6]

Answer:

We conclude that the proportion of student body in favor of him is significantly less than or equal to 50%.

Step-by-step explanation:

We are given that Mike runs for the president of the student government and is interested to know whether the proportion of the student body in favor of him is significantly more than 50 percent.

A random sample of 100 students was taken. Fifty-five of them favored Mike.

<em>Let p = </em><u><em>proportion of the students who are in favor of Mike.</em></u>

So, Null Hypothesis, H_0 : p \leq 50%      {means that the proportion of student body in favor of him is significantly less than or equal to 50%}

Alternate Hypothesis, H_A : p > 50%      {means that the proportion of student body in favor of him is significantly more than 50%}

The test statistics that would be used here <u>One-sample z proportion</u> <u>statistics</u>;

                        T.S. =  \frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }  ~ N(0,1)

where, \hat p = sample proportion of students body in favor of Mike = \frac{55}{100} = 0.55

           n = sample of students taken = 100

So, <em><u>test statistics</u></em>  =   \frac{0.55-0.50}{\sqrt{\frac{0.55(1-0.55)}{100} } }

                               =  1.01

The value of z test statistics is 1.01.

<em>Now, at 0.05 significance level the z table gives critical value of 1.645 for right-tailed test.</em>

<em>Since our test statistic is less than the critical value of z as 1.01 < 1.645, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to which </em><u><em>we fail to reject our null hypothesis</em></u><em>.</em>

Therefore, we conclude that the proportion of student body in favor of him is significantly less than or equal to 50% or proportion of the students in favor of Mike is not significantly greater than 50 percent.

4 0
3 years ago
Which polynomial function has zeros when x= -2, 3/4, 5
Troyanec [42]

Answer: f(x)=(x+2)(4x-3)(x-5)

Step-by-step explanation:

Alg2.2.5 practice 2

8 0
3 years ago
Which system of inequalities has no solution?
Luda [366]

Answer:

i think c

Step-by-step explanation:

4 0
2 years ago
Toby's piggy bank contains only 5c and 10c coins. If it contains 65 coins with a total value of 3.80, find the number of each ty
mr_godi [17]
The positive is 2 hknshue dska
5 0
3 years ago
Persons younger than 18 years old are not eligible to vote. Let a be age in years.
BaLLatris [955]
D because a has to be younger than 18 and it has to be positive because we are never a negative age. do you understand when i mean?
<span />
3 0
3 years ago
Read 2 more answers
Other questions:
  • Simplify the following in the form of a + b √c<br><br>2√2-7√8+4√½+8√32​
    9·1 answer
  • Find the value of x. Please help, it'd be appreciated :)
    9·2 answers
  • Amy banana bread recipe calls for 3/4 cup of brown sugar she only has a 1/8 cup measure which equivalent fraction shows the amou
    15·1 answer
  • A train left Apex at 12 P.M. and traveled for 3 hours and 5 minutes. It stopped for fuel for 10 minutes, and then continued towa
    15·2 answers
  • I need help on this problem
    14·2 answers
  • Which expression is equivalent to -2 - 7 <br><br> -2 - (-7) <br> 2 - 7 <br> -2 + (-7) <br> 2+7
    10·2 answers
  • Can 9,999,999 have the same value
    5·1 answer
  • PLEASE IS FOR MY HOMEWORK
    13·1 answer
  • A company wants to test a new brand of dog food that has added omega-3 oils for healthy, shiny coats.
    7·2 answers
  • Crecimiento de arboles
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!