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topjm [15]
3 years ago
14

Sara is studying how quickly adults tire after eating turkey. She splits a group of 20 adults into 2 groups. One group is given

turkey to eat and the other group is not given anything to eat. Sara asks the adults to start exercising at the same, and to stop when they tire, measuring the time each adult stops exercising. She finds that the adults who did not eat turkey exercised 2 minutes longer than those who did eat turkey. Sara rerandomizes the data, calculates the difference between the means, and creates the dot plot shown below. Based on the data, can Sara conclude the difference is significant?
dot plot ranging from negative two to two in increments of point five with frequencies of two, three, four, five, six, nine, six, twelve, fifteen, twelve, nine, ten, five, four, three, and two respectively


No, Sara cannot conclude the difference is significant because a 2-minute difference is likely to happen by chance.
Yes, Sara can conclude the difference is significant because 0.25 is the difference in means that occurs most often.
No, Sara cannot conclude the difference is significant because 0.25 is the difference in means that occurs most often.
Yes, Sara can conclude the difference is significant because a 2-minute difference is not likely to happen by chance.
Mathematics
2 answers:
nlexa [21]3 years ago
7 0

Answer:

 Yes, Sara can conclude the difference is significant because a 2-minute difference is not likely to happen by chance.

pishuonlain [190]3 years ago
5 0

Answer:

Answer is Yes, Sara can conclude the difference is significant because a 2-minute difference is not likely to happen by chance.

Step-by-step explanation:

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Determine weather the following is real or complex <br> i^6-122-7i^2
Leona [35]

Answer:

Real

Step-by-step explanation:

i^6-122-7i^2

(i^2)^3-122-7i^2

(-1)^3-122-7×(-1)

-1-122+7

-123+7

-116

So the final answer is -116

7 0
3 years ago
when the wimen sells 90 oranges Rs160 with dicount of 20%,how many oranges she sell by Rs112 with profit of 20%​
Fynjy0 [20]

She sold 42 oranges with profit 20%

Step-by-step explanation:

The woman sells 90 oranges by RS.160

This price with discount of 20%

We need to find how many oranges she sell by Rs.112 with profit of 20%​

  • Selling price = cost price - discount ⇒ discount case
  • Selling price = cost price + profit ⇒ profit case

Assume that cost price of an orange is x

∵ She sells 90 oranges with Rs.160

- Find the selling price of 1 orange by dividing 160 by 90

∴ The selling price of an orange = \frac{160}{90}=\frac{16}{9}

∵ She sold them with discount 20%

∵ The cost price of an orange is x

- Find the 20% of x

∵ Discount = 20% × x = \frac{20}{100} × x = 0.2x

- To find the selling price subtract 0.2x from x

∴ The selling price = x - 0.2x

∴ The selling price of an orange = 0.8x

- Equate 0.8x by \frac{16}{9} to find x

∵ 0.8x = \frac{16}{9}

- Divide both sides by 0.8

∴ x = \frac{20}{9}

Assume that the number of oranges is y

∵ She sell y oranges for Rs.112 with profit 20%

∵ The cost price of an orange is \frac{20}{9}

- Find 20% of \frac{20}{9}

∵ Profit = 20% × \frac{20}{9} = \frac{20}{100}.\frac{20}{9}=\frac{4}{9}

- Add \frac{4}{9} to cost price to find the selling price

∴ The selling price of an orange = \frac{20}{9} + \frac{4}{9}

∴ The selling price of an orange = \frac{24}{9}

- To find y divide 112 by selling price of an orange

∵ y = 112 ÷ \frac{24}{9}

∴ y = 42

She sold 42 oranges with profit 20%

Learn more:

You can learn more about percentage in brainly.com/question/12284722

#LearnwithBrainly

4 0
3 years ago
A box of laundry detergent is on sale for $6.50. If this price represents a 40% discount from the original price, what is the or
Mademuasel [1]

$10.83 because you need to divide 6.50 by .6 to get that answer approximately.

4 0
4 years ago
Huda opened a bank account with $30.00 and deposited $25.00 every month. After several months, she had a total of $180 in her ac
krek1111 [17]
Answer: C.) 6 months
3 0
3 years ago
Read 2 more answers
5+2x15+1-6/76^3x2+73*0+0.0000273
NemiM [27]
  • 6+2(15)+1-6/(76^2×2)+73×0+0.0000273
  • 6+30+1-6/11552+0+0.0000273
  • 37-0.000519+0.0000273
  • 36.999

Done

6 0
2 years ago
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