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Natalija [7]
3 years ago
8

Sam feels that students score better on math tests that take place on Fridays. The school provides Sam with the school math test

average, but they cannot separate them by date taken. The school is too large for him to ask every student, so he randomly selects a sample of willing students' test scores after the next Friday's math test. He uses the method of hypothesis testing to compare the Friday scores against the true average of all scores. Frame the correct set of hypotheses for his research. Decide where the rejection region will lie.
Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
4 0

Answer:

H0 : μ ≤ x

H1 : μ > x

The hypothesis :

The null hypothesis, H0 : μ ≤ x

The alternative hypothesis, uses the Friday score samples to compare the hypothesis ;

The alternative hypothesis, H1 : μ > 8

For then null, the mean scores is assumed to be the same, and has such mean of Friday's test score takes the value of the population.

Let the population mean value = x

The alternative hypothesis is the claim that the sampled mean gives a greater value than the population mean :

H1 : μ > x

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Step-by-step explanation:

When there is a negative correlation between two variables, it means when one variable increases, the other one decreases.A correlation of -0.64 means that the variable do not have a strong negative correlation because its less that -0.9. However, this correlation is not a weak negative correlation because the value is more that -0.1

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What two numbers have a sum of 17 and a difference of 3
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(7 & 10), bc 10-7=3 and 10+7=17
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For the school play, tickets cost $9.50 for adults and $3 for kids under 12. What would be the total cost for 8 adult tickets an
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Answer:

  • $139
  • 9.5aa +3kk

Step-by-step explanation:

<h3>a)</h3>

8 adult tickets cost 8($9.50) = $76

21 kids tickets cost 21($3) = $63

The total cost of these tickets is $76 +63 = $139.

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<h3>b)</h3>

aa adult tickets cost 9.50aa

kk kids tickets cost 3.00kk

The total cost of these tickets is 9.50aa +3.00kk.

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<em>Additional comment</em>

We ordinarily expect a variable to be a single letter. This problem statement defines each variable using a double letter, so that is what we have used. (Sometimes Brainly doubles up variable content in copied text, so we suspect that may have happened here.)

4 0
3 years ago
A right triangle has a hypotenuse of 10 mi. and a leg of 6 mi., what is the length of the other leg?
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Answer:

8mi

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Using Pythagoras theorem

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10 square = 6 square + x square

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Collect like terms

X square = 100 -36

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I hope this was helpful, Please mark as brainliest

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Answer:

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CHECK: 465 + 515 = 980

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