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vazorg [7]
2 years ago
9

Can someone tell me What is 10% of 20

Mathematics
1 answer:
Andrej [43]2 years ago
3 0

Answer:

2

Step-by-step explanation:

skskskskskskkskskskskskskksksks

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Mr cho drives 45 miles in 1 hours.if her speed stays constants, how many hours will it take for her to drive 405 miles
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With constant speed it will take her : 405 ml / 45= 9 hours of drive
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3 years ago
A random sample of 4000 college students yielded 2250 who are in favor of banning Hawaiian shirts. Estimate the true proportion
Andreas93 [3]

Answer: (0.5496, 0.5754)

Step-by-step explanation:

The confidence interval for population proportion (p) is given by :-

\hat{p}\pm z*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}  , where \hat{p}= Sample proportion , n= sample size , z*= Critical z-value.

Let p be the  proportion of all college students who are in favor of banning Hawaiian shirt.

Given, A random sample of 4000 college students yielded 2250 who are in favor of banning Hawaiian shirts.

i.e. n=4000

\hat{p}=\dfrac{2250}{4000}=0.5625

z-value for 90% confidence level is 1.645

Now , 90% confidence interval for p would be :

0.5625\pm (1.645)(\sqrt{\dfrac{0.5625(1-0.5625)}{4000}})

=0.5625\pm (1.645)(\sqrt{0.0000615234375})\\\\=0.5625\pm (1.645)(0.00784368774876)\\\\\approx0.5625\pm0.0129\\\\=(0.5625-0.0129, \ 0.5625+0.0129)\\\\=(0.5496,\ 0.5754)

Hence, the required 90% interval = (0.5496, 0.5754)

6 0
3 years ago
Will and Mohammed are playing a game where they roll a fair six-sided die and a fair four-sided die and try to predict the outco
castortr0y [4]

Answer: Mohammed is correct

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3 years ago
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What is the area of a circle that has a 5-inch diameter use 3.14 for pi?
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