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4 years ago

How many different committees of 7 people can be formed from a group of 10 people?

Mathematics

1 answer:

lianna [129]4 years ago

7 0

1 and .70. So that would be 1.7 I believe

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Jill has 8 yards of cloth she wants to cut it into pieces that are 1/4 yard long How many pieces can she cut from the length of

Liula [17]

Well... if she has 8 yards, and a yard equals to 18 inches. So.. I would divide 8 and 1/4. After you do the reciprocal, you would get 32 pieces.

7 0

3 years ago

A cheese processing company wants to estimate the mean cholesterol content of all one-ounce servings of a type of cheese. The es

Mrrafil [7]

Answer:

The minimum sample size required to construct a 95% confidence interval for the population mean is 65.

Step-by-step explanation:

We are given the following in the question:

Population standard deviation,

$\sigma = 3.10\text{ milligrams}$

We need to construct a 95% confidence interval such that the estimate is within 0.75 milligrams of the population mean.

Thus, the margin of error must me 0.75

Formula for margin of error:

$z_{critical}\times \dfrac{\sigma}{\sqrt{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$0.75 = 1.86\times \dfrac{3.10}{\sqrt{n}}\\\\\sqrt{n} = \dfrac{1.96\times 3.10}{0.75}\\\\\sqrt{n} = 8.101\\\Rightarrow n = 65.63\approx 65$

Thus, the minimum sample size required to construct a 95% confidence interval for the population mean is 65.

5 0

3 years ago

A^-4 is the question and it wants me to write in exponential notation with positive exponents

zysi [14]

Pretty sure the answer would be 1/A^4

3 0

3 years ago

What is 1.9961 x 10^-7

kakasveta [241]

Answer:0.00000019961

Step-by-step explanation:

I moved the decimal place by the number of the exponent

4 0

3 years ago

Find the average speed Distance:1,375km Time: 2 hours 5 minutes

Murljashka [212]

Answer:

550km/h

Step-by-step explanation:

v (speed) = d/t

v = 1375/2.5

v =550

6 0

2 years ago