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Nostrana [21]
3 years ago
6

Find the radius of the button. Please help I am stuck!

Mathematics
2 answers:
marysya [2.9K]3 years ago
5 0
We can see that the diameter is 5 cm. Radius is simply half of the diameter.
5/2=2.5
The radius is 2.5 cm.
RoseWind [281]3 years ago
4 0
Yeah since the height of the pin is 5cm the radius is half so would be 2.5 cm
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A newsletter publisher believes that above 78 % of their readers own a personal computer. Is there sufficient evidence at the 0.
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h_{0}: p= .78

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Determining the null and alternate hypotheses of a scenario require several components. The first is if one should use p or mu. This depends on if they are assessing a proportion or a mean, since the publisher states a percentage, you know that they are asking for a proportion, and therefore should use p. Next, they will need to assess what value to use for the hypothesis statements, here only .78 is provided and therefore should be used in both. Finally, it is time to add in the comparison symbols, the null hypothesis always uses an equals sign so it therefore becomes:

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What does this mean I need help?
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Answer:

Step-by-step explanation:

x > 3 reads x is greater than three. This includes all numbers to the right of three, but not three itself.    |₋₋|₋₋|₋₋₀---|---|---|---|---|---|----->

                                             0 1  2  3  4  5  6  7  8  9

x ≤5  reads x is less than or equal to five. This includes all numbers to the left of and including the number 5    <--|---|---|---|---|---|---|--•₋₋₋|₋₋|₋₋₋|₋₋₋|₋₋₋₋

                                                           -2 -1  0  1  2  3  4  5  6  7  8  9

x ≥ -4 reads x is greater than or equal to minus four. This includes all numbers to the right of and including -4.    

 |₋₋₋|₋₋₋|₋₋₋•---|---|---|---|---|---|---|-->

-7 -6  -5  -4 -3 -2  -1  0  1  2  3

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