Ask question

Ask question

All categories

3 years ago

13

Find the mean of the data in the dot plot below. students Size of each of Mr. Sirac's classes + + + + 21 20 22 23 24 25 26 28 27

Number of students Show Calculator Report a Stuck? Watch a video or use a hint.

1 answer:

ahrayia [7]3 years ago

3 0

Ok the answer is b i hope that helps!!

You might be interested in

The u.s. department of health and human services collected sample data for 772 males between the ages of 18 and 24. that sample

soldier1979 [14.2K]

The 99% confidence interval for the true mean is given by:

$\bar{x}\pm z_{\alpha/2} \frac{\sigma}{\sqrt{n}}$

where:

$\bar{x}$ is the sample mean = 69.7
$\sigma$ is the standard deviation = 2.8
$z_{\alpha/2}$ is the test statistics = 2.58 for for 99% confidentce interval.
n is the sample size = 772.

Therefore, the 99% confidence interval is:

$69.7\pm2.58\left( \frac{2.8}{\sqrt{772}} \right)=69.7\pm2.58(0.1008) \\ \\ =69.7-0.26\leq\mu\leq69.7+0.26 \\ \\ =69.44\leq\mu\leq69.96$

6 0

3 years ago

Read 2 more answers

The approval of a new drug application (NDA) by the FDA allows for which of the following?

Lera25 [3.4K]

A the manufacturer is allowed to sell the drug in the united states
hope it helped

5 0

3 years ago

Can anyone help me with these three questions

iren2701 [21]

Sure, what are the questions?

5 0

3 years ago

Which product of prime polynomial a is equivalent to 8x^4+36x^3-72x^2

Tatiana [17]

Answer :

B. 4x²(2x-3)(x+6)

4x²(2x-3)(x+6)
4x²(2x²+12x-3x-18)
4x²(2x²+9x-18)
8x⁴+36x³-72x²

5 0

3 years ago

The ratio of the measures of the sides of a triangle is 5:7:8 and has a perimeter of 320 inches. What is the measure of each sid

Readme [11.4K]

<span>The ratio of the measures of the sides of a triangle is 5:7:8, and its perimeter is 40 inches. what is the measures of each side of the triangle
Sides are (5/20) x 40 = 10 inches
(7/20) x 40 = 14 inches, and (8/20) x 40 = 16 inches respectively. </span>

8 0

3 years ago