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
baherus [9]
3 years ago
11

Various studies indicate that approximately 11% of the world's population is left handed. You think this number is actually high

er. You take an SRS of 225 people and find that 31 of them are left handed. Test your claim at the 5% significance level.
A. State your null and alternative hypotheses.
B. Sketch the rejection region.
C. Calculate the test statistic.
D. Determine the P-value for your test.

Mathematics
1 answer:
Irina-Kira [14]3 years ago
8 0

Answer:

a. H0 : p ≤ 0.11 Ha : p >0.11 ( one tailed test )

d. z= 1.3322

Step-by-step explanation:

We formulate our hypothesis as

a. H0 : p ≤ 0.11 Ha : p >0.11 ( one tailed test )

According to the given conditions

p`= 31/225= 0.1378

np`= 225 > 5

n q` = n (1-p`) = 225 ( 1- 31/225)= 193.995> 5

p = 0.4 x= 31 and n 225

c. Using the test statistic

z=  p`- p / √pq/n

d. Putting the values

z= 0.1378- 0.11/ √0.11*0.89/225

z= 0.1378- 0.11/ √0.0979/225

z= 0.1378- 0.11/ 0.02085

z= 1.3322

at 5% significance level the z- value is ± 1.645 for one tailed test

The calculated value falls in the critical region so we reject our null hypothesis H0 : p ≤ 0.11 and accept  Ha : p >0.11 and  conclude that the data indicates that the 11% of the world's population is left-handed.

The rejection region is attached.

The P- value is calculated by finding the corresponding value of the probability of z from the z - table and subtracting it from 1.

which appears to be 0.95 and subtracting from 1 gives 0.04998

You might be interested in
Complete the statement.
GenaCL600 [577]

Answer:

alternate interior angles are always congruent.

Step-by-step explanation:

- Consecutive [Same-side] exterior angles are always supplementary.

- Consecutive [Same-side] interior angles are always supplementary.

- Corresponding angles are always congruent.

I am joyous to assist you anytime.

4 0
2 years ago
elise gets a free tax allowance of $6000 and pays tax at 25% on the next $20 000. she pays tax at a raye of 30% on the rest. if
Likurg_2 [28]

Answer:

c

Step-by-step explanation:

i know because im not g.a.y like u guys

4 0
2 years ago
Which of the following is in order from smallest to largest?
kirill115 [55]

Answer:

-5,-8,-10,1,7

Step-by-step explanation:

6 0
3 years ago
What is the domain of this table X 1 2 3 4 Y 2 4 3 2
Hoochie [10]
1,2,3,4 are the domain. The x column is always the domain.
3 0
3 years ago
Jack and Walter work in a store's gift-wrapping department. Jack can wrap 28 boxes in 2 hours, while Walter takes 3 hours to wra
iVinArrow [24]
J = 14h
w = 12h
h = jw65

4 0
3 years ago
Other questions:
  • I need help please help me​
    10·1 answer
  • a line has a slope of -2 and passes through the point (-1,4).what is its equation in slope intercept form?​
    11·1 answer
  • What is the area of the obtuse triangle below?<br>다​
    7·2 answers
  • F<br><img src="https://tex.z-dn.net/?f=5%20%5Cdiv%206%20%3D%20" id="TexFormula1" title="5 \div 6 = " alt="5 \div 6 = " align="ab
    15·1 answer
  • Como resolver lo siguiente.. 7x+14 ??
    15·1 answer
  • Find the number of sides of a regular polygon with each interior angle equal to 157.5°. The regular polygon has sides.
    11·1 answer
  • Explain how finding 4 times 384 can help you find 4 times 5384.then find both products
    14·1 answer
  • Write the equation of a line in slope intercept form with the given slope and y-intercept
    8·1 answer
  • You randomly select 2 marbles from a mug containing 7 blue marbles, 3 red marbles, and 2 white marbles. How many times greater i
    14·1 answer
  • Find the sum of 6x^2+10x-16x 2 +10x−1 and -5x^2-2x+1−5x^2 −2x+1.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!