3 years ago

Please help me with this :c Will give TWENTY POINTS!!

Mathematics

1 answer:

Goshia [24]3 years ago

7 0

Answer:

Area of a triangle formula is 1/2 x base x height

Area of the garden = 1/2 x 25 x 10 = 125 square feet.

1 bag covers 10 square feet, divide total area by 10"

125 / 10 = 12.5

She will need to buy 13 bags.

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In a prior sample of U.S. adults, the Center for Disease Control (CDC), found that 8% of the people in this sample had pinworm b

kow [346]

Answer: a) 453 b) 1537

Step-by-step explanation:

As per given , we have

Margin of error : E= 0.025

Critical value for 95% confidence interval : $z_{\alpha/2}=1.96$

a) The prior estimate of population proportion : p=0.08

Required sample size :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.08(1-0.08)(\dfrac{1.96}{0.025})^2\\\\=452.386816\approx453$

The minimum sample size is 453 U.S. adults.

b) Since the prior estimate of population proportion is not available , so we take p= 0.5

Required sample size :-

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.25(\dfrac{1.96}{0.025})^2\\\\=1536.64\approx1537$

The minimum sample size is 1537 U.S. adults.

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4 years ago

the trip to omaha to salt lake city interstate 80 is about 1516 kilometers. at 90 km perhour the trip would take about

Rudiy27

1516 / 90 = 16.8
I think?

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4 years ago

A grocer knows that if he sells his canned hams for $8 each, he will sell 950 per month. If he sells them each for $10, he will

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3 years ago

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No

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3 years ago

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30% , 3/5 , 0.8 Checking: 30%=30% 3/5=60% 0.8=80%

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