27.03.2022

Theo recorded the means and mean absolute deviations of his language arts and Biology scores. He found the difference in the means of the scores of the two subjects. What is the approximate ratio of the difference in the means to each of the mean absolute deviations?

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Mathematics

Theo recorded the means and mean absolute deviations of his language arts and biology scores. he found the difference in the means of the scores of the two subjects. what is the approximate ratio of the difference in the means to each of the mean absolute deviations? means and mean absolute deviations of theo’s scores language arts biology mean 98 90 mean absolute deviation 3.5 5 a.2 b.5 c.18 d.28

Step-by-step answer

P Answered by PhD

109

Option: a is the correct answer.

a. 2

Step-by-step explanation:

We are given a table for the mean and mean absolute deviations as:

Language Arts Biology

Mean 98 90

Mean Absolute Deviation 3.5 5

Hence, the difference in the mean is:

98-90=8

Now we calculate the ratio of difference in mean with each of the mean absolute deviation score.

$\dfrac{8}{3.5}=2.286$

which is approximately equal to 2.

$\dfrac{8}{5}=1.6$

which is also approximately equal to 2.

Hence, the approximate ratio of the difference in the means to each of the mean absolute deviations is: 2

Mathematics

Step-by-step answer

P Answered by PhD

109

Option: a is the correct answer.

a. 2

Step-by-step explanation:

We are given a table for the mean and mean absolute deviations as:

Language Arts Biology

Mean 98 90

Mean Absolute Deviation 3.5 5

Hence, the difference in the mean is:

98-90=8

Now we calculate the ratio of difference in mean with each of the mean absolute deviation score.

$\dfrac{8}{3.5}=2.286$

which is approximately equal to 2.

$\dfrac{8}{5}=1.6$

which is also approximately equal to 2.

Hence, the approximate ratio of the difference in the means to each of the mean absolute deviations is: 2

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Imran is paid ?286 per week Every week he puts 20% of his wage into a savings account How much does he put into his savings each week

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P Answered by PhD

The answer is in the image

Mathematics

Neil places £2000 in a bank account that pays 1.5% simple interest per year. How much interest will he earn in 6 years?

Step-by-step answer

P Answered by PhD

SI=(P*R*T)/100

P=2000

R=1.5

T=6

SI=(2000*1.5*6)/100

=(2000*9)/100

=180

Neil will earn interest of 180

Mathematics

You can buy jars of the same jam in 2 sizes large jar:440g for £1.54 small jar:340g for £1.26 By considering the price per gram, work out which jar is the best value for money. Working must be shown

Step-by-step answer

P Answered by PhD

Answer: 440 grams for 1.54 is the better value
Explanation:
Take the price and divide by the number of grams
1.54 / 440 =0.0035 per gram
1.26 / 340 =0.003705882 per gram
0.0035 per gram < 0.003705882 per gram

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An ice cream shop offers 5 different flavors of ice cream and 9 different toppings. How many choices are possible for a single serving of ice cream with one topping?

Step-by-step answer

P Answered by PhD

For 1 flavor there are 9 topping

Therefore, for 5 different flavors there will be 5*9 choices

No of choices= 5*9

=45

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Deanna gets 3 problems incorrect on a math quiz. Her score is 85%. How many questions are on the quiz?

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The answer is in the image

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Anthony received $150 for his birthday this year. This was $10 less than half the amount he received last year. How much money did Anthony receive for his birthday last year?

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P Answered by PhD

The answer is in the image

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The ratio of tables to chairs at the furniture store is 1:6. There are 30 chairs. How many tables are there?

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P Answered by PhD

The solution is in the following image

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The value of a collectible coin can be represented by the equation y = 2 x + 15, where x represents its age in years and y represents its total value in dollars. What is the value of the coin after 19 years? $2 $23 $38 $53

Step-by-step answer

P Answered by PhD

y=2x+15

where y=Value of coin

x=Age in years

Value of coin after 19 years=2*19+15

=$53

Therefore, Value after 19 years=$53

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Theo recorded the means and mean absolute deviations of his language arts and Biology scores. He found the difference in the means of the scores of the two subjects. What is the approximate ratio of the difference in the means to each of the mean absolute deviations?

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