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3 years ago

I need help with math homework

Mathematics

1 answer:

Drupady [299]3 years ago

7 0

I Can Help, What Do You Need Help With Buddy?

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In 2012 there were approximately 8,950 public libraries in the United States. A survey found that 76% of those libraries offered

kondaur [170]

Answer:

6,802

Step-by-step explanation:

76 6,802

-- = ---

100 8,950

Multiply 8950 times 76, then divide 680,200 by 100, which equals 6,802.

4 0

3 years ago

A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.05 in.

Pavel [41]

Answer:

107,426, bigger

Step-by-step explanation:

Given that a soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.05 in.

Margin of error = 0.05 inches

Since population std deviation is known we can use z critical value.

(a) i.e. for 99% confidence interval

Z critical = 2.58

$2.58(\frac{0.20}{\sqrt{n} } )106.50\\n>107$

A minimum sample size of 107 needed.

b) $2.58(\frac{0.40}{\sqrt{n} } )426$

Here minimum sample size = 426

Due to the increased variability in the population, a bigger sample size is needed to ensure the desired accuracy.

8 0

3 years ago

Use the Pythagorean Theorem to find the distance between points A and B.

spayn [35]

The answer is d because it’s right

7 0

3 years ago

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Evaluate the following expression:<br> 62 - 7(8 + 6 – 3²)<br><br><br> ANSWER STAT!!

Anna11 [10]

Answer:

Step-by-step explanation:

5 0

3 years ago

WILL GIVE BRAINLIEST!! Why does 0.9999999... equal 1

weeeeeb [17]

Answer:

9, among other ways denotes the repeating decimal consisting of infinitely many 9s after the decimal point (and one 0 before it). This repeating decimal represents the smallest number no less than every decimal number in the sequence (0.9, 0.99, 0.999, ...). This number is equal to 1.

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers