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krek1111 [17]
3 years ago
8

???????????????????????????? Please answer ASAP. Very much appreciated. ❤️❤️❤️❤️

Mathematics
1 answer:
tankabanditka [31]3 years ago
3 0
She needs to earn at least 84 to buy the mp3 player

earnings=earningsperhour times numberofhoursworked

earnings per hour=12 dollars
number of hoursworked=h

therefor
earnings=12 ties h or12h

earnings is at least 84
earnings is greater than or equal to 84
earnings<u>></u>84
12h<u>></u>84

solve
12h<u>></u>84
divide both sides by 12
h<u>></u>7
she needs to work at least 7 hours

to graph, draw a line at x=0 and shade to the right, make the line solid
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For a repeated-measures study comparing two treatments with 12 scores in each treatment, what is the df value for the t statisti
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The degree of freedom for t statistic is 11.

According to the given question.

For a repeated-measure study, comparing two treatments with 12 scores in each treatment .

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We know that, when you have a sample and estimate the mean, we have

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Therefore,

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Hence, the degree of freedom for t statistic is 11.

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2 years ago
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goldenfox [79]

Answer:

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You can double check this by replacing x with (5)

If it is right both sides should equal the same

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Answer:

x = -0.4

Step-by-step explanation:

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Now, we have all the constants on the right side of the equation.

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