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stealth61 [152]
3 years ago
5

Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest

Mathematics
2 answers:
Fed [463]3 years ago
7 0

Answer:

B

Step-by-step explanation:

The data points need to go from 41 to 50

This eliminates choice D

The median is at 44 ( the line in the middle of the box)

There are 10 data points so the middle data point is the between the 5th and 6th

(43+45)/2 = 44

(43+47)/2 = 45   We can eliminate Choice C

The right line is the upper quartile.  It is the middle of the upper 5 data points

If should be at 48

The middle of the upper 5 data points is the 8th point

The 8th point in 8 is 49

inB it is 48

ruslelena [56]3 years ago
5 0

Answer: The answer should be A

Explanation: Look at the 2 bolded points and count from there. Start from the first bolded point.

I hope I helped! ***** Please leave a THANKS and a RATE!

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A company has developed a training procedure to improve scores on the SAT. Following the training, 100 high school students take
Pani-rosa [81]

Answer:

The calculated t-test = 1.717 < 1.6604 at 0.05 level of significance

Null hypothesis is accepted at 0.05 level of significance

A company has developed a training procedure is significantly improve scores

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given  sample mean (x⁻ )  = 517

sample standard deviation (s) =90

Mean of the Population (μ) =500

<em>Null Hypothesis :- H₀ :  </em> (μ) =500

Alternative Hypothesis : H₁ :  μ ≠ 500

<u><em>Step(ii)</em></u>:-

Test statistic

                         t = \frac{x^{-} -mean}{\frac{s}{\sqrt{n} } }

                        t = \frac{517 -500}{\frac{90}{\sqrt{100} } }

                        t  =   1.717

<em>Level of significance</em>

                      ∝ = 0.05

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The calculated t-test = 1.717 < 1.6604 at 0.05 level of significance

<u><em>Conclusion</em></u>:-

Null hypothesis is accepted at 0.05 level of significance

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Levart [38]
3x+5=14 \\ 3x=14-5 \\ 3x=9 / :3\\ \boxed{x=3} \\ \\\\\huge\text{The answer is x=3}
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Answer:

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svetoff [14.1K]

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