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sleet_krkn [62]
3 years ago
5

Ten increased by the quotient a number x and nine

Mathematics
1 answer:
LekaFEV [45]3 years ago
8 0

Answer:

x= negative 90 i think.

Step-by-step explanation:

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Answer:

Step-by-step explanation:

Confidence interval for the difference in the two proportions is written as

Difference in sample proportions ± margin of error

Sample proportion, p= x/n

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n = number of samples

For the men,

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For the women

x = 379

n2 = 460

p2 = 379/460 = 0.82

Margin of error = z√[p1(1 - p1)/n1 + p2(1 - p2)/n2]

To determine the z score, we subtract the confidence level from 100% to get α

α = 1 - 0.95 = 0.05

α/2 = 0.05/2 = 0.025

This is the area in each tail. Since we want the area in the middle, it becomes

1 - 0.025 = 0.975

The z score corresponding to the area on the z table is 1.96. Thus, confidence level of 95% is 1.96

Margin of error = 1.96 × √[0.61(1 - 0.61)/520 + 0.82(1 - 0.82)/460]

= 1.96 × √0.0004575 + 0.00032086957)

= 0.055

Confidence interval = 0.61 - 0.82 ± 0.055

= - 0.21 ± 0.055

3 0
3 years ago
How far can you run in 5/7 of an hour if you run at a speed of 8 2/5 mph?
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Step-by-step explanation:

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Hello : 
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Step-by-step explanation:

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