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3 years ago

WILL GIVE BRAINLIEST

Mathematics

2 answers:

ss7ja [257]3 years ago

6 0

Answer:

the answer should be D. it's been awhile since i did middle school math XD

mihalych1998 [28]3 years ago

5 0

Answer:

The exam median is much higher than the class median.

Step-by-step explanation:

The median is represented by the line in the box. The median is a common measure of the center of the data. Half of the observations are less than or equal to the value, and the other half is greater than or equal to the value.

You can see in the graph that the class median is almost in the middle, while the median of the exam is quite shifted to the right of the box. Hence, the answer is:

The exam median is much higher than the class median.

Hope this helps!

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Step-by-step explanation:

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3 years ago

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Answer:

(-4,-∞)

Step-by-step explanation:

I think this is what you mean

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3 years ago

Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Upper H 0: pequals0.6 versus U

kow [346]

Answer:

Step-by-step explanation:

From the given information:

The null and the alternative hypothesis can be well written as:

$H_o:P=0.6$

$H_1:P>0.6$

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n = 200

x = 135

Alpha ∝ = 0.05 level of significance

Then;

⇒ $n \times p\times (1-P)$

= 200 × 0.6 × (1 -0.6)

= 200 × 0.6 × 0.4

= 48 ≥ 10

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$= \dfrac{135}{200}$

= 0.675

The test statistics $Z = \dfrac{\hat P - P}{\sqrt{ \dfrac{P(1-P)}{n} }}$

$Z = \dfrac{0.675 - 0.6}{\sqrt{ \dfrac{0.6 \times 0.4}{200} }}$

$Z = \dfrac{0.075}{\sqrt{ \dfrac{0.24}{200} }}$

Z = 2.165

The P-value = P(Z > 2.165)

= 1 - P(Z < 2.165)

From the z tables

= 1 - 0.9848

= 0.0152

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Thus, there is enough evidence to conclude that the value of the population proportion is greater than 0.6

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3 years ago

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Ede4ka [16]

Answer:

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Step-by-step explanation:

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#(AUB) = 80% + 70% - 55%

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Which means that 95% of people enjoy either swimming or running

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