2 years ago

You inherit 70000 from a wealthy grandparent

1 answer:

7 0

I think you need to explain more for one to answer it.

Please give more details and I'll try to help (if this is meant to be a question)

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The Ohio Department of Agriculture tested 203 fuel samples across the state in 1999 for accuracy of the reported octane level. F

OlgaM077 [116]

Answer:

The Sample size is 1918.89035

Step-by-step explanation:

Consider the provided information.

It is given that 14 out of 105 samples failed.

Therefore p = 14/105 = 0.13 3... and q=1-0.133=0.867

Samples would be needed to create a 99 percent confidence interval.

Subtract the confidence level from 1, then divide by two.

$\frac{(1 -0.99)}{2}=0.005$

By standard normal table z=2.5758≈2.58

Calculate the sample size as:

$n=\frac{z^2pq}{e^2}$

Where, e is the margin of error,

Substitute the respective values.

$n=\frac{(2.58)^2(0.133)(0.867)}{(0.02)^2}=1918.89$

Hence, the Sample size is 1918.89035

4 0

3 years ago

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Reptile [31]

Answer: X is 15. N is 100

6 0

3 years ago

Let y = safe load in pounds and x = length in feet of a horizontal beam. A constant of proportionality k exists such that y=k/x

Contact [7]

Answer:

Option c. 30,000

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form $y*x=k$ or $y=k/x$

Let

y ----> safe load in pounds

x ----> length in feet of a horizontal beam

we have

For $x=15\ feet, y=2,000\ pounds$

Remember that

$k=y*x$

substitute

$k=2,000*15=30,000$

7 0

3 years ago

150 students were surveyed to see what sport they play what percentage plays soccer

Anna35 [415]

Not enough info.
You need to know how many played soccer.

If the number who played soccer is represented by S;

Then percentage = S/150 x 100

7 0

3 years ago

When my car's gas tank is 80% empty, it contains 3 gallons of gas. How many gallons

Fofino [41]

The answer is 12 gallons

3 0

2 years ago

Read 2 more answers