A cosmetic company tested a new lotion. Of the 2,500 people tested 15 had an allergic reaction. What percentage of the people ha

Response:

Explanation in steps:

In this situation, the x-axis indicates the time taken, while the y-axis shows the distance traveled.

Response:

Three.

Detailed explanation:

An analyst aims to integrate Level of Education into a regression model.

This variable has four categories: HS, BS, MS, PHD.

The number of dummy variables needed is:

Given 4 categories, (4 - 1 = 3) dummy variables will suffice for the model.

If M represents a dummy variable, where 1 signifies the presence of a specific education level and 0 its absence;

M1 = 1 for HS, 0 otherwise

M2 = 1 for BS, 0 otherwise

M3 = 1 for MS, 0 otherwise

When M1, M2, and M3 are all 0, the value of PHD is implied.

Answer:

(Choice A) A 16:10

(Choice C) C 48:30

(Choice D) D 32:20

Step-by-step explanation:

The given ratio is

8:5

Select three ratios that correspond to 8:5

Check all options

(Choice A) A 16:10

= 16 / 10

Reducing by 2 yields

= 8 / 5

= 8:5

(Choice B) B 50:80

= 50 / 80

Reducing by 10 yields

= 5 / 8

= 5:8

(Choice C) C 48:30

= 48 / 30

Reducing by 6 yields

= 8 / 5

= 8:5

(Choice D) D 32:20

= 32 / 20

Reducing by 4 yields

= 8 / 5

= 8:5

(Choice E) E 64:35

= 64 / 35

The ratios equivalent to 8:5 are

(Choice A) A 16:10

(Choice C) C 48:30

(Choice D) D 32:20

Response:

Option B.

Step-by-step breakdown:

The general equation for the best fit line is

where a indicates the slope and b the y-intercept.

Utilizing a graphing calculator yields a=-4.54762 and b=43.7143. Hence, the equation for the best fit line can be represented as

Here,

Note: Alternatively, you can apply the following formula to compute the slope.

Accordingly, the correct choice is B.