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DiKsa [7]
3 years ago
9

Janine wishes to conduct a poll to predict how many students will vote for her for class president. Which polling methods are li

kely to be biased? Choose all answers that are correct. A. Five people in each of Janine’s classes are selected and asked for whom they intend to vote. B. From a list of all students in Janine’s grade, 25 students are selected at random and asked for whom they intend to vote. C. Every 10th student from a list of all students in Janine’s grade is selected and asked for whom the student intends to vote. D. Janine chooses 5 of her friends and asks each to select another 5 students. These 25 students are asked for whom they intend to vote.
Mathematics
1 answer:
vredina [299]3 years ago
4 0
D since she is asking her friends who are just going to ask their friends
A. since only 5 are asked
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Give one real life example of each correlation: positive, negative, and no correlation.
mixer [17]
In a positive correlation, both variables increase together. An example of this is a company's profit's relationship with its sales. The greater the sales, the greater the profit.
A negative correlation is where one variable decreases with increase in the other. An example is the time taken to reach somewhere and the speed traveled at. The faster you move, the less the time.
No correlation means the two variables are not related. An example of this is as you get older, it does not mean you will get better grades.
7 0
3 years ago
Read 2 more answers
An office building has 23 offices. The floor area of each office is 305 square feet. Which shows the equation you can use to fin
Mumz [18]

Answer: D.23 x 305 = n, n = 7015

Step-by-step explanation:

23 x 305 = 7015

7015 square feet

3 0
3 years ago
Emerson struck out 112 times in 350 at bats complete the proportion to represent the percent of strike outs per at bats
Mrac [35]

Answer:

Percent of strike outs per-bat = 32%

Step-by-step explanation:

Given:

Number of balls strike out = 112

Total number of ball played = 350

Find:

Percent of strike outs per-bat

Computation:

Percent of strike outs per-bat = [112/350]100

Percent of strike outs per-bat = [0.32]100

Percent of strike outs per-bat = 32%

3 0
3 years ago
The population of bacteria in a certain culture can be modeled by the function P(t)=10000(1.03)^t. Is the population of bacteria
ch4aika [34]

Answer:

The population of bacteria is increasing.

Step-by-step explanation:

The function modelling the population of bacteria in the given culture is an exponential function; We have a base 1.03 and an exponent t. An exponential function is said to be increasing if the base is strictly greater than 1, this implies that the population of the bacteria is increasing as t increases from 0 to infinity.

4 0
3 years ago
Read 2 more answers
Look at this expression.
g100num [7]
Multiply x<span> and </span>3

<span>Multiply x and 1</span>

<span>The x just gets copied along.</span>

<span>The answer is x</span>

x

<span>3*x evaluates to 3x</span>

Because of the minus sign

<span>3x becomes - 3x</span>

<span>The answer is -3x</span>

<span>Multiply y and 2</span>

<span>Multiply y and 1</span>

<span>The y just gets copied along.</span>

<span>The answer is y</span>

y

<span>2*y evaluates to 2y</span>

<span>-3*x-2*y evaluates to -3x-2y</span>

<span>The answer is -3x-2y-2</span>

<span>-3*x-2*y-2 evaluates to <span>-3x-2y-2</span></span>

<span><span>so the first one is right</span></span>

<span><span>
</span></span>

4 0
4 years ago
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