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inn [45]
3 years ago
9

What is 70% of 20? please help

Mathematics
2 answers:
Olin [163]3 years ago
8 0

Answer:

14

Step-by-step explanation:

70% = 70/100 = 7/10

multiply 7/10 * 20

7/10 * 20 = 14

defon3 years ago
4 0

Answer:

14

Step-by-step explanation:

All you have to do is multiply 70% by 20 so 20 x 0.7=14

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From an industrial area 70 companies were selected at random and 45 of them were panning for expansion next year. Find 95% confi
Lana71 [14]

Answer:

Confidence limit = [52.8%, 75.2%]

Step-by-step explanation:

P=\frac{45}{70}= 0.64

(1-P)=1-0.64=0.36

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P ± z \sqrt{\frac{P(1-P)}{n} }

where the value z will be taken from the z-table for 95% confidence interval

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0.64 ± 1.96 \sqrt{\frac{0.64*0.36}{70} }

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0.64 ± 0.112

64%% ± 11.2%

so the confidence interval is

64+11.2=75.2%

64-11.2=52.8%

[52.8, 75.2]

8 0
3 years ago
AMELIA IS SHARING 4 SLICES OF CHEESE WITH 5 FRIENDS. HOW MUCH CHEESE WILL EACH PERSON GET? EXPLAIN HOW YOU DECIDED.
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Answer:

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Step-by-step explanation:

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