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Bess [88]
3 years ago
8

Ann Landers – who wrote a daily advice column appearing in newspapers across the country – once asked her readers, "If you had i

t to do over again, would you have children?" Of the more than 10,000 readers who responded, 70% said no. (I’m certain your parents would say yes!) What does this show?
Mathematics
1 answer:
elena55 [62]3 years ago
8 0

Answer:

It shows that the survey is meaningless because of voluntary response bias.

Step-by-step explanation:

This survey in the question provides a very good example of voluntary response bias and this often overrepresents negative opinions. Now, the people who chose to respond were most likely parents who were very unhappy, and so, there is very little chance that the 10,000 respondents were representative of the population. Knowing more about her readers, or taking a sample of the sample, would not have helped.

Thus, we can conclude that ;The survey is meaningless because of voluntary response bias.

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Your friend has improved in his math class. On his first test he scored 50 points, and then he scored 53, 56, 59, and 62 points
emmainna [20.7K]

Answer:

Step-by-step explanation: I think you skip count by 50s or something like that. So, it has to be 64.

3 0
3 years ago
Paul owes Paula 35 cents and has a pocket full of 5-cent coins, 10-cent coins, and 25-cent coins that he can use to pay her. Wha
kykrilka [37]
So, what is the case in which he uses the least coins? can he use 1 coin? no, there isn't a 35 cent coin. can he use 2 coins? yes! he can use 25+10 cent coins!

now, the largest number of coins means the coins of the smallest value: so using only 5 cent coins. How many would this be?

we have to divide:

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so we would use 7 coins.

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6 0
3 years ago
What is 'Five less than 25' in numerical expression?
saveliy_v [14]

Answer:

5 < 25

in numerical expression

7 0
2 years ago
Read 2 more answers
The profile of the cables on a suspension bridge may be modeled by a parabola. The central span of a bridge is 1270 ft long and
deff fn [24]

Answer:

Step-by-step explanation:

Given

span of bridge L=1270\ ft

height of span h=157\ ft

Equation of Parabola

y=0.00039x^2

|x| i.e.

-635

\frac{dy}{dx}=2\times 0.00039

length of Arc=\int_{a}^{b}\sqrt{1+(\frac{dy}{dx})^2}

=\int_{-635}^{635}\sqrt{1+(\frac{dy}{dx})^2}

=\int_{-635}^{635}\sqrt{1+(0.00078x)^2}

=2\times \int_{0}^{635}\sqrt{1+(0.00078x)^2}

=2\times (660.08)

=1320.16\ ft

4 0
3 years ago
Using the diagram above, create your own word problem.
KatRina [158]

Answer:

Step-by-step explanation: So since one of the box Is bigger it is larger in numbers so see how many little boxes can make the big box okay.

6 0
3 years ago
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