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4 years ago

The annual salaries of the ten employees of a small company are shown.

Mathematics

1 answer:

Evgesh-ka [11]4 years ago

8 0

Answer:

40,000

Step-by-step explanation:

You might be interested in

The product of the square of x and seven

polet [3.4K]

"Product of" tells you to use multiplication of the two terms

"square of x" = x²

"seven" = ... the number... 7

Your equation (your answer for these problems) can take a few forms:

x² · 7

7 · x²

7(x²)

(x²)(7)

7x²

5 0

3 years ago

Solve the inequality for x= 1 + 2x > -23

IgorLugansk [536]

Answer:

x = -12

Step-by-step explanation:

1 + 2x > -23

-1

2x > -24

x < -12

8 0

3 years ago

A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained i

Scorpion4ik [409]

Answer:

a) We need a sample size of at least 3109.

b) We need a sample size of at least 4145.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

(a) he uses a previous estimate of 25%?

we need a sample of size at least n.

n is found when $M = 0.02, \pi = 0.25$ . So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.02 = 2.575\sqrt{\frac{0.25*0.75}{n}}$

$0.02\sqrt{n} = 2.575\sqrt{0.25*0.75}$

$\sqrt{n} = \frac{2.575\sqrt{0.25*0.75}}{0.02}$

$(\sqrt{n})^{2} = (\frac{2.575\sqrt{0.25*0.75}}{0.02})^{2}$

$n = 3108.1$

We need a sample size of at least 3109.

(b) he does not use any prior estimates?

When we do not use any prior estimate, we use $\pi = 0.5$

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.02 = 2.575\sqrt{\frac{0.5*0.5}{n}}$

$0.02\sqrt{n} = 2.575\sqrt{0.5*0.5}$

$\sqrt{n} = \frac{2.575\sqrt{0.5*0.5}}{0.02}$

$(\sqrt{n})^{2} = (\frac{2.575\sqrt{0.5*0.5}}{0.02})^{2}$

$n = 4144.1$

Rounding up

We need a sample size of at least 4145.

8 0

4 years ago

A doctor told his patient to drink 3 full cups and 1/2 of a cup of medicine over a week.

Nadya [2.5K]

Answer:

<u>The patient is going to drink 14 pints of medicine over a week</u>

Step-by-step explanation:

1. Let's review all the information provided to answer the question correctly:

Amount of medicine the doctor told his patient to drink over a week = 3 1/2 cups

1 full cup = 4 pints

2. How much is the patient going to drink over the week?

For answering this question, we multiply this way:

3 1/2 = 3.5

3.5 * 4 = 14

<u>The patient is going to drink 14 pints of medicine over a week</u>

8 0

3 years ago

Will give brainlist or whatever.

max2010maxim [7]

Quarters and 1 dime

4 0

3 years ago