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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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2 74/100

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Michael wrote the system of equations below, but he accidentally left out the coefficient of x in the first equation.
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Your answer would have to be 2

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Air pressure may be represented as a function of height (in meters) above the
denis-greek [22]

Answer: OPTION C.

Step-by-step explanation:

<h3> The complete exercise is: "Air pressure may be represented as a function of height (in meters) above the surface of the Earth, as shown below:</h3><h3>  P(h) =P_0e^{-0.00012h} </h3><h3> In this function P_o   is the air pressure at the surface of the earth, and h is the height above the surface of the Earth, measured in meters. At what height will the air pressure equal 50% of the air pressure at the surface of the Earth"</h3><h3></h3>

Given the following function:

P(h) =P_0e^{-0.00012h}

In order to calculate at what  height the air pressure will be equal 50% of the air pressure at the surface of the Earth, you can follow these steps:

1. You need to substitute P(h)=0.5P_o into the function:

0.5P_o=P_0e^{-0.00012h}

2. Finally, you must solve for h.

Remember the following property of logarithms:

ln(b)^a=a*ln(b)\\\\ln(e)=1

Then, you get this result:

0.5P_o=\frac{P_o}{e^{0.00012h}}\\\\(0.5P_o)(e^{0.00012h})=P_o\\\\e^{0.00012h}=\frac{P_o}{0.5P_o}\\\\ln(e)^{0.00012h}=ln(2)\\\\0.00012h*1=ln(2)\\\\h=\frac{ln(2)}{0.00012}\\\\h=5576.2

7 0
3 years ago
A bedroom set lists for $7,000 and carries a trade discount of 20 percent. Freight (FOB shipping point) of $120 is not of the li
kirza4 [7]

Answer:

The total price is $5720

Step-by-step explanation:

According to the given statement a bedroom set lists for $7,000 and carries a trade discount of 20 percent. Freight (FOB shipping point) of $120 is not of the list price.

A bedroom lists for = $7000

Discount = 20% = 0.2

Now multiply 7000 by 0.2 = 7000* 0.2 = 1400

It means the discount value was $1400

Now subtract 1400 from 7000 = 7000 - 1400 = $5600

Now to get the total price add 5600 with 120 we get,

$5600+120 = $5720

Thus the total price is $5720 .....

5 0
3 years ago
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