3 years ago

Please !!! Help ASAP $!!

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

7 0

X has to be equal to 7 to make the two lines parallel. YOU'RE WELCOME :D

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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:

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

$(1-P)=1-0.64=0.36$

$n= 70$

$P$ ± $z$ $\sqrt{\frac{P(1-P)}{n} }$

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

1-0.95= 0.05/2= 0.025

0.95+0.025= 0.0975

From the z-table the value of $z$ corresponding to 0.0975 is 1.96

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

$0.64$ ± $1.96$ $(0.057)$

$0.64$ ± $0.112$

$64%$ % ± $11.2$ %

so the confidence interval is

$64+11.2=75.2$ %

$64-11.2=52.8$ %

$[52.8, 75.2]$

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3 years ago

The volume of a barn is given by the formula V = = r2h.

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Answer:

it is what it is take a guess

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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3 years ago

The area of the rhombus is 20 square inches. What is x?

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1/3 ft. = 4 inches
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