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FinnZ [79.3K]
3 years ago
6

You are conducting an experiment to determine whether males and females have different emotional reactions to chocolate consumpt

ion. Your male sample size is 124, and your female sample size is 232. What is your degrees of freedom when determining your p-value?
Mathematics
1 answer:
Yuri [45]3 years ago
8 0

Answer:

354

Step-by-step explanation:

Data provided in the question:

Sample size of the male = 124

Sample size of the female = 232

Now,

Degree of freedom is calculated as = (Sample,1  - 1 ) + (Sample,2  - 1 )

Therefore,

Degree of freedom

= (Sample size of the male - 1 ) + (Sample size of the male - 1)

or

Degree of freedom = ( 124 - 1 ) + ( 232 - 1 )

or

Degree of freedom = 123 + 231

or

Degree of freedom = 354

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An engineering student answered 58 questions correctly on a 100-question trigonometry test.
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A used motorcycle is priced at $3,438. If you borrow the money for the motorcycle, your payments will be $165 per month for 24 m
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3 years ago
A survey is planned to estimate the proportion of voters who support a proposed gun control law. The estimate should be within a
laila [671]

Complete Question

A survey is planned to estimate the proportion of voters who support a proposed gun control law. The estimate should be within a margin of error of ±5% with 90% confidence, and we do not have any prior knowledge about the proportion who might support the law. How many people need to be included in the sample?

Round your answer up to the nearest integer.

sample size = _____

Answer:

The sample size is n = 271    

Step-by-step explanation:

From the question we are told that  

   The margin of error is  E = 5% = 0.05

Generally given that there was no prior knowledge about the proportion of who might support the law, we will assume the sample proportion to be  

     \^ p =  0.5

From the question we are told the confidence level is  90% , hence the level of significance is    

      \alpha = (100 - 90 ) \%

=>   \alpha = 0.05

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.645

Generally the sample size is mathematically represented as  

    n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p )

=>   n = [\frac{1.645 }{0.05} ]^2 * 0.5 (1 - 0.5 )

=>   n = 271    

5 0
3 years ago
In ABC, what is the value of x<br><br> 5.5<br> 6.5<br> 55<br> 65
vekshin1

<em>Answer:</em>

( B ) x = 6.5

<em>Step-by-step explanation:</em>

We know that all the angles of a triangle equal 180 when added together. So lets make an equation for this question.

(10x-10) + (10x+8) + 8x = 180

I just took all the angles and added them together to make 180. Now solve for x.

10x - 10 + 10x + 8 + 8x = 180 <em>(combined like terms)</em>

28x -2 = 180 <em>(added 2 to both sides)</em>

28x = 182 <em>(divided both sides by 28)</em>

x = 6.5

6 0
3 years ago
Read 2 more answers
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