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
erma4kov [3.2K]
2 years ago
5

A researcher claims that 45% of U.S. adults think that the IRS is not aggressive enough in pursuing people who cheat on their ta

xes. You believe the true percentage is more than 45%. To test this, you take a simple random sample of 500 U.S. adults and find that 245 of them say the IRS is not aggressive enough.
Required:
a. What's the minimum population size required?
c. How many successes were there?
c. Test at 0.01 significance.
Mathematics
2 answers:
marusya05 [52]2 years ago
4 0

I’m just tryna get up my bag yurt

alukav5142 [94]2 years ago
3 0

Answer:

a) Then minimum sample size is  n = 12

b) We got  245 successes  

c)p-value is greater than 0,01 Therefore we accept H₀.

We can´t support our claim

Step-by-step explanation:

a) The minimum population size required to use the approximation of binomial distribution to normal distribution can be obtained from:

n*p > 5      p  = 0,45     0,45 * n  >  5     n > 11  

Then minimum sample size is  n = 12

b)  We got  245 successes  out of  n = 500

x =  245       p  =  245/500    p  = 0,49

q  =  1 - p     q  =  1  - 0,49    q  =  0,51

Test Hypothesis:

Null Hypothesis                        H₀      p  =  0,45

Alternative Hypothesis            Hₐ      p  > 0,45

Alternative Hypothesis indicates that the test is a one tail test to the right

z( s)  =   (  p  -  0,45  )  / √ p*q/n

z( s)  =   (  0,49 - 0,45 ) / √ 0,49*0,51 / 500

z( s)  =  0,04 /  0,0223

z(s)  =  1,793

p- value for  z = 1.79  is from z-table    p-value = 0,0367

Comparing p-value with the significance level  0,01 we see that

p-value is greater than 0,01 Therefore we accept H₀.

We can´t support our claim

You might be interested in
Please Help!!!
Komok [63]

Answer:

A = 63 m^2

Step-by-step explanation:

The area of a parallelogram is bh

A = bh

The base is 9 and the height is 7

A = 9*7

A = 63 m^2

3 0
3 years ago
Read 2 more answers
I need help with math
Bogdan [553]

A. ∠4 is congruent to ∠5; True.

B. Two lines are parallel; True.

C. The measure of ∠6 = 90.5°; False.

D. ∠2 and ∠3; True.

<h3>What are the properties of angles of parallel lines?</h3>
  • On a common plane, two parallel lines do not intersect.
  • As a result, the characteristics of parallel lines with respect to transversals are given below.
  1. Angles that correspond are equal.
  2. Vertical angles are equal to vertically opposite angles.
  3. Interior angles that alternate are equal.
  4. The exterior angles that alternate are equal.

For the give question;

Two line are cut by the transversal.

∠1 =  90.5° and ∠7  =  89.5°

Thus the result for the given statement are-

A. ∠4 is congruent to ∠5 because they are alternate interior angles; True.

B. Two lines are parallel; True.

C. The measure of ∠6 = 90.5°; False.

∠6 = ∠7 =  89.5°.(correct)

D. ∠2 and ∠3 are supplementary because they are same-side exterior Angeles; True.

Thus, the result for the given statement are found.

To know more about the parallel lines, here

brainly.com/question/4954460

#SPJ1

3 0
1 year ago
What is the volume of the cone
zhannawk [14.2K]

what are the measurments of the cone, but the formula to the cone is V

v = pi times radus times radius  h/3

3 0
3 years ago
Didn’t learn this good
patriot [66]

.059, you move the decimal point two times to the left and the other way around when you want to convert into a percent

4 0
3 years ago
There is the picture of the problem i’m really having trouble with it could someone help me plz :)
blondinia [14]

<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em><em> </em><em>⤴</em>

<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em>

<em>✴</em><em>Have</em><em> </em><em>a</em><em> </em><em>great</em><em> </em><em>day</em><em>✴</em><em>✴</em>

6 0
3 years ago
Other questions:
  • Writes formula for f(n), the nth term of the arithmetic sequence 1,4,7,10,13
    5·1 answer
  • You sell T shirts for a fundraiser. It cost $122 to have the shirt made . You make $98 in sales . What is your profit ?
    14·1 answer
  • The teacher asks Mel and Kate to use base 10 blocks to model the number that is ten times the value of 4 rods. Mel's modle uses
    14·1 answer
  • ????(−2, 10) is the midpoint of . If ???????? has coordinates (4, −5), what are the coordinates of ?????
    5·1 answer
  • How to write an equation for functions
    12·2 answers
  • If a spring stretches 0.8 with 20 pounds attached how far will it stretch with 60 pounds attached?
    13·2 answers
  • If you are the sole owner of a company with a net worth of $2.35 million dollars and are sued for $4 million dollars what is the
    15·1 answer
  • Help please........................
    15·1 answer
  • A 12oz bottle has 80 calories. how many calories does 28oz have
    14·2 answers
  • Please Help me to answerthe questions and options are in picture
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!