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
Nana76 [90]
3 years ago
9

Does the amount of hazardous material absorbed by the bodies of hazardous waste workers depend on gender? The level of lead in t

he blood was determined for a sample of men and a sample of women who dispose of hazardous waste as a full time job. You want to test the hypotheses that the amount absorbed by men is greater than the amount absorbed by women. After performing a hypothesis test for two independent samples, you see a p-value of 0.0032. Of the following, which is the appropriate conclusion?
1)The average amount of lead absorbed by men is significantly greater than the average amount of lead absorbed by women.

2)The average amount of lead absorbed by men is significantly less than the average amount of lead absorbed by women.

3)We did not find enough evidence to say the average amount of lead absorbed by men is greater than the average amount of lead absorbed by women.

4)The average amount of lead absorbed by men is less than or equal to the average amount of lead absorbed by women.

5)The average amount of lead absorbed by men is significantly different from the average amount of lead absorbed by women
Mathematics
1 answer:
Eva8 [605]3 years ago
4 0

Answer:

Correct option is (A).

Step-by-step explanation:

A two-sample <em>t</em>-test can be performed to determine whether the amount of hazardous material absorbed by the bodies of hazardous waste workers depend on gender or not.

Th hypothesis will be:

<em>H₀</em>: The amount absorbed by men is same as the amount absorbed by women, i.e. <em>μ</em>₁ = <em>μ</em>₂.

<em>Hₐ</em>: The amount absorbed by men is greater than the amount absorbed by women, i.e. <em>μ</em>₁ > <em>μ</em>₂.

The test statistic used is:

t=\frac{\bar x_{1}-\bar x_{2}-(\mu_{1}-\mu_{2})}{\sqrt{\frac{s_{1}^{2}}{n_{1}}+\frac{s_{2}^{2}}{n_{2}}}}

The decision rule to reject the null hypothesis based on the <em>p</em>-value is:

If the <em>p</em>-value of the test is less than the significance level <em>α</em> then the null hypothesis will be rejected. And if the <em>p</em>-value of the test is greater than the significance level <em>α</em> then the null hypothesis will not be rejected.

The <em>p</em>-value of the test is,

<em>p </em>- value = 0.0032

The commonly used significance levels are:

<em>α</em> = 0.01, 0.05 and 0.10.

The <em>p</em>-value of this test is less than all these <em>α</em>'s.

Thus, the null hypothesis will be rejected.

<u>Conclusion:</u>

As the null hypothesis is rejected, it can be concluded that the amount of leas absorbed by men is significantly greater than the amount absorbed by women.

Thus, the correct option is (A).

You might be interested in
How much did she spend
Olenka [21]

Answer:

64%

Step-by-step explanation:

:)

4 0
2 years ago
Read 2 more answers
An object is launched at 29.4 meters per
Lerok [7]

Answer:

The reasonable domain for the scenario is option 'a';

a) [0, 7]  

Step-by-step explanation:

For the projectile motion of the object, we are given;

The speed at which the object is launched, v = 29.4 meters per second

The height of the platform from which the object is launched, h = 34.3 meter

The equation for the height of the object as a function of time 'x' is given as follows;

f(x) = -4.9·x² + 29.4·x + 34.3

The domain for the scenario, is given by the possible values of 'x' for the function, which is found as follows;

At the height from which the object is launched, x = 0, and f(x) = 34.3

At the ground level to which the object can drop, f(x) = 0

∴ f(x) = -4.9·x² + 29.4·x + 34.3 = 0

-4.9·x² + 29.4·x + 34.3 = 0

By the quadratic formula, we have;

x = (-29.4 ± √(29.4² - 4 × (-4.9) × 34.3))/(2 × (-4.9)

∴ x = -1, or 7

Given that time is a natural number, we have the reasonable domain for the scenario as the start time when the object is launched, t = 0 to the time the object reaches the ground, t = 7

Therefore, the reasonable domain for the scenario is; 0 ≤ x ≤ 7 or [0, 7].

4 0
3 years ago
14n = -126<br> Need Hell ASAP<br> Algebra Quiz
sweet-ann [11.9K]

14n=-126

/14 /14 divide by 14 on both sides of the

equation

n=-9

5 0
2 years ago
Read 2 more answers
1367324+3469345-75369x3429x0=??
Mnenie [13.5K]

Answer:

it's ans is 4761300

Step-by-step explanation:

by using BODMAS

75369×3429×0

=0

0+1367324+3469345

=4836669

4836669-75369

=4761300

plz mark me as brainliest plz

5 0
2 years ago
Judith is digging for sandstone at a geological site. She has 160 meters of rope and 4 stakes to mark off a rectangular area. Wh
kondaur [170]
The  2 lengths + 2 widths of the rectangle will equal 160 meters
So, for example,  length = 50 m and width = 30m  would fit the bill

2*50 + 2*30 = 160 m
3 0
3 years ago
Other questions:
  • Please help...Write a congruency statement for the pair of triangles
    8·1 answer
  • Find the measurement indicated in each parallelogram.
    13·1 answer
  • What is 1.4444 in fraction form?
    5·1 answer
  • I need help I'm not good in math
    11·1 answer
  • To save money for college, Manny puts $800 in his savings account for 18 years. During that time, it pays 6.75% simple Interest.
    10·1 answer
  • What is 1(4x+7y)+2(5y-9x)​
    8·1 answer
  • Two friends, Aria and Kaylee, took summer jobs. The equation y = 20.2 x y=20.2x represents Kaylee's earnings in dollars and cent
    6·1 answer
  • Help i just need a quick answer thanks!
    9·2 answers
  • PLZZZZ HELP!!! what is y = 2/3x - 6 in standard form
    7·1 answer
  • Help ASAP please
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!