Select the scenario below that demonstrates sampling bias. Select the correct answer below: a) Justin wants to estimate the ethnic background distribution of residents of his town. He collects data from 1000 randomly selected town residents by using a random number generator.
b) To estimate the mean salary of professors at her university, Patricia collects data by recording the salaries of all professors included in 12 randomly selected departments.
c) Elizabeth wants to estimate the mean height of students at her school. She collects data by selecting a random group of students within her classroom.
d) To estimate the mean grade point average of students at her school, Annie collects data by recording the grade point average of every 25th student on the list of students after randomly selecting first student.

Answers

Answer 1

Answer:

Answer:

(C) Elizabeth wants to estimate the mean height of students at her school. She collects data by selecting a random group of students within her classroom.

Step-by-step explanation:

In option C, the sample is an example of convenience sampling, It is not representative of the population of student being studied.

Convenience sampling is a type of non-probability sampling method in which the sample is taken from the part of the population easy to reach.

The sample are not chosen at random thereby undermining the ability to generalize the results from the sample to the entire population under study.

Related Questions

Assume f(x) = ax^2+ bx + c Which one is true? f is a parabola that opens sideways to the right. f is a parabola that opens sideways to the left. f is a parabola that opens downward. f is a parabola that opens upward.
2 PointsThese dot plots show the lengths (in feet) from a sample of crocodiles andalligatorsCrocodi0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20Alligator0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20LengthWhat are the differences between the centers and spreads of thesedistributions?Select two choices: one for the centers and one for the spreadsD A Centers: The crocodiles have a lower median length than thealligatorsB. Centers: The crocodiles have a greater median length than thealligatorsc. Spreads: The lengths of the alligators are more spread outD. Spreads. The lengths of the crocodiles are more spread outPREVIOUSSEO
Which expression is equivalent to the given expression?12(x – 17) A. 12x – 29 B. 12 + 12 • 17 C. 12x – 12 • 17 D. 12x – 17
Kristin is saving up money to go on a trip around the world next year. In order to make enough to pay for her trip, Kristin has to work at least 260 days this year.Which of the following inequalities represents Kristin's possible number of workdays, d
You have a 1 kilogram bag of sugar You use 435 grams to fill the sugar bowls How much sugar is left in the bag

Find the value of x that will make L||M

Answers

Answer:

x = 17

Step-by-step explanation:

When two lines are intersected by a transversal, the interior on the same side of the transversal are called co interior angles and they are supplementary.

6x + 8 + 4x + 2 = 180

6x + 4x + 8 + 2 = 180 {Combine like terms}

10x + 10 = 180 {Subtract 10 from both side}

10x = 180 - 10

10x = 170 {Divide both sides by 10}

x = 170/10

x = 17

Given h(x)= -5x+3,solve for x when h(x)=3

Answers

Answer: x = 0

Explanation

The idea is to replace h(x) with 3. Then we isolate x. Follow PEMDAS in reverse to get x by itself.

Here are the steps:

h(x) = -5x+3

3 = -5x+3

-5x+3 = 3

-5x = 3-3

-5x = 0

x = 0/(-5)

x = 0

As a check,

h(x) = -5x+3

h(0) = -5*0 + 3

h(0) = 0 + 3

h(0) = 3

Therefore, the input x = 0 in the domain leads to the output h(x) = 3 in the range. We have confirmed the answer x = 0

Another way to confirm the answer is to use a graphing tool like GeoGebra or Desmos.

In figure, MN : NP = 9:1. If MP = 2. Find the distance from M to point K that is 1/4 the distance from M to N?(A) 1 (B) 1 1/3 (C) 9/20 (D) 1 8/10

Answers

The distance MN is 9/(9+1) = 9/10 of the distance MP, so is

... MN = (9/10)×MP = (9/10)×2 = 9/5

The distance MK is 1/4 that, so is ...

... MK = (1/4)×(9/5) = 9/20 . . . . . matches selection (C)

Answer:

Step-by-step explanation:

the answer is C. give the person the brainly :) ignore this answer

Jacob went to Walmart to buy a water cooler for $4650. Walmart offered an off-season discount of 18%. How much did Jacob pay for the water cooler?

Answers

Answer:3813

Step-by-step explanation:

First, turn the discount percentage to a decimal

18%= .18

Multiply the decimal by the original price

.18 x 4650= 837

Subtract that amount from the original price to get the discount

4650-837= 3813

HELP PLZ ASAP!!!!A landfill has 60,000 tons of waste in it. Each month it accumulates an average of 360 more tons of waste. What is a function rule that represents the total amount of waste after m months? Let W represent the total amount of waste and m represent months.

A. W= 360m + 60,000

B. W= 60,000m + 360

C. W= 360m - 60,000

D. W= 60,000m - 360

Answers

Answer:

Step-by-step explanation:

Your answer is A.

Anytime you have a variable or something that changes such as the month that is a variable so that means its going to be your x/m in this case

Question 3 of 5A basketball has a radius of 4.5 inches. If the
ball is filled with 350 cubic inches of air, how
much more air is needed to fill it completely?
Round to the nearest whole number.