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Pavel [41]
4 years ago
7

Using the Formula n=1/(ME)2 to Determine Sample Size When we want confidence and use the conservative estimate of , we can use t

he simple formula to roughly determine the sample size needed for a given margin of error . Use this formula to determine the sample size needed for a margin of error of 0.005 . Enter the exact answer.
Mathematics
1 answer:
PIT_PIT [208]4 years ago
4 0

Answer:

The sample size needed is 40000.

Step-by-step explanation:

The sample size needed is:

n = \frac{1}{M^{2}}

Use this formula to determine the sample size needed for a margin of error of 0.005

This is n when M = 0.005. So

n = \frac{1}{M^{2}}

n = \frac{1}{0.005^{2}}

n = 40000

The sample size needed is 40000.

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Approximately 13.2% of US drivers are younger than age 25, with 37.7% in the 25-44 age group, and 49.1% in the 45-and-over-categ
Elan Coil [88]

Answer:

could not be the same

Step-by-step explanation:

Given that approximately US drivers are agewise as follows:

<25   13.2

25-45   37.7%

>45   49.1%

Observations are made for a sample of 200 fatal accidents.

Let us create hypotheses as

H_0:  Proportions age wise are the same as for US drivers\\H_a: Proportions are different

(Two tailed chi square test at 5% significance level)

Age <25 25-45 >45  

Expected 13.2 37.7 49.1 100

Observed 42 80 78 200

Expected no  26.4 75.4 98.2 200

Chi square 9.218181818 0.280636605 4.155193483 13.65401191

df = 2

p value = 0.001084

Since p <0.05 we reject null hypothesis

At the  0.05 level, the age distribution of drivers involved in fatal accidents within the state could not be the same as the age distribution of all US drivers as there seems to be significant difference.

5 0
3 years ago
An internet search has 220000 results. How does the value of 2 in the leftmost position compare to the value of other 2 in the n
Lilit [14]

Answer:

its 10x the value.

Step-by-step explanation:

20000 x 10 = 220000

5 0
3 years ago
HELLLP ASAP
Kisachek [45]

Answer:

<u>1.</u> 20 boxes cost $36. The unit rate is 1:1.8 and when you multiply 1.8 by 5 you get 9. If you also multiply 1.8 by 20 you get 36.

<u>2.</u>He completes 12.5 pages in 200 minutes.

200 divided by 32

multiply that answer by 2

which is 12.5.

hope it helps!

3 0
3 years ago
Read 2 more answers
-24 divided by x + 12 to the second when x= -14
ELEN [110]

Answer:12

Step-by-step explanation:

3 0
3 years ago
Write a real-world problem that can be represented by the given equation. Explain what your variable represents. 2X + 6 = 3X + 4
Nina [5.8K]

Answer:

Choose one of these equations: (20 points) 10x + 12y = 10,500 4x + 6y = 2,340 10x + 6y = 150 a. Write your own word problem that could match one of the equations above. Abby makes $150 a day at her new job as an assistant for a fashion designer in New York. She earns $10 an hour plus $6 for every dress she trailers. How many hours does she have to work and how many dresses does she have to tailor to earn $150? b. Rewrite the equation in slope-intercept form. y= -(5)/(3)x + 25 c. Graph the Equation

1. Choose one of these equations: (20 points) 10x + 12y = 10,500 4x + 6y = 2,340 10x + 6y = 150 a. Write your own word problem that could match one of the equations above. Abby makes $150 a day at her new job as an assistant for a fashion designer in New York. She earns $10 an hour plus $6 for every dress she trailers. How many hours does she have to work and how many dresses does she have to tailor to earn $150? b. Rewrite the equation in slope-intercept form. y= -(5)/(3)x + 25 c. Graph the Equation

Step-by-step explanation:

Hope this helps:) Also can I get brainliest plz I am 1 more away from ace so please help me ou thx :)

3 0
3 years ago
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