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soldier1979 [14.2K]
3 years ago
9

The area of circle B is 16 times greater than the area of circle A. Which of the following statements is true?

Mathematics
1 answer:
valina [46]3 years ago
5 0

The answer is A. It says that circle b is 16 times greater so yeah its A.




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A recent survey reported that small businesses spend 24 hours a week marketing their business. A local chamber of commerce claim
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Answer:

Following are the responses to the given choices:

Step-by-step explanation:

In step 1:

State the zero and alternate test hypotheses. Insert underneath.

H_0 : \mu = 24: H_a : \mu < 24

H_0 Smaller companies in their region are and they spend at least 24 hours per week on the marketing of the these companies

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In step 2:

Each test statistics meaning is calculated. Around two decimal places for your reply.

z=\frac{\bar{X}-\mu_{0}}{\frac{\sigma}{\sqrt{n}}}=\frac{23.2-24}{\frac{4.2}{\sqrt{88}}}=-1.787

In step 3:

Draw a start and write the decision.

Since it is observed that z=-1.787 < z_c=-1.64 it is then concluded that the null hypothesis is rejected.

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