Will a random sample always accurately predict the outcome for the entire population? Why or why not? Explain your reasoning.

The algebraic rule for a reflection over the x-axis is one for the following:

Galina-37 [17]

A. The x axis changes, but the y wouldn’t.

8 0

3 years ago

Point G lies in the interior of \angle DEG∠DEG. The ratio of \angle GEF∠GEF to \angle GED∠GED is 3 to 5. If the m\angle DEF=64m∠

Musya8 [376]

Answer:

Angle GEF measure is 3*8 = 24 degrees; angle GED measure is 5*8 = 40 degrees.

Step-by-step explanation:

7 0

3 years ago

In two or more complete sentences, describe how to use technology to construct an appropriate regression model for the given dat

Dima020 [189]

Let us assume we are using TI-84 model of a calculator, which I have.

Step 1: Plot the points and determine the type of function.

Enter the x-values and y-values into lists as follows:

a. Press Stat, and then press Enter to select Edit.
b. Clear any data already in the lists by using the arrows to the heading of the column to highlight L1 and hit Clear, then Enter. Repeat for L2.
c. Enter the x-values into L1 and the y-values into L2.

Graph the points using the calculator as follows:

a. Stat Plot on.
b. 2nd Stat Plot, Enter, then select On

c. set x and y values appropriately from the window button.

Press y =, then arrow up to highlight Plot1, and press Graph.

This will give you the type of graph or function.

Step 2: Find regression equation.

a. Press Stat, then right-arrow to Calc.
b. select one of the following:

#4: LinReg (ax + b). If the function is linear

#5: QuadReg. For quadratic function.

#0: ExpReg. For exponential function.

8 0

3 years ago

Read 2 more answers

Kelly price sells college textbooks on commission. She gets 8 % on the first $7500 of sales, 16% on the next $7500 of sales, a

Solnce55 [7]

Answer:

The commission would be $ 920.

Step-by-step explanation:

Given,

Sales in 1997 = $ 9500,

Since, there is a commision of 8 % on the first $ 7500 of sales, 16% on the next $ 7500 of sales, and 20% on sales over $ 15,000,

If x represents the total sales,

Commission for x ≤ 7500 = 8% of x = 0.08x,

Commission for 7500 < x ≤ 15000 = 8% of 7500 + 16% of (x-7500)

= 600 + 0.16(x-7500),

Commission for 7500 < x ≤ 15000 = 8% of 7500 + 16% of 7500 + 20% of (x-15000)

= 600 + 1200 + 0.20(x-15000)

= 1800 + 0.20(x-15000)

Thus, the function that shows the given situation,

$f(x)=\left\{\begin{matrix}0.08x & x \leq 7500\\ 600+0.16(x-7500) & 7500 < x \leq 15000\\ 1800+0.20(x-15000) & 15000 < x\end{matrix}\right.$

Since, 9500 lies between 7500 and 15000,

Therefore, the commission would be,

f(9500)= 600 + 0.16(9500 - 7500) = 600 + 320 = $ 920

7 0

4 years ago

Write each decimal as a fraction or mixed number in simplest form. 1. -0.15 2. -7.75 3. -12.54

Mkey [24]

1.) -3/20
2.) -7 3/4
3.) -12 27/50

4 0

4 years ago