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3 years ago

Please help on question 3

Mathematics

2 answers:

fiasKO [112]3 years ago

5 0

Answer: 36

Step-by-step explanation:

Circumference is $C=d\pi$

Diameter is 2r

Diameter is 14

$\pi$ = 22/7

$C=14(\frac{22}{7} )$

C=44

half the circumference is 22- so the circle part is 22

plus the 14 for the bottom

22+14=36

marusya05 [52]3 years ago

3 0

36 bshshsjshshshs sorry if wrong

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3 years ago

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4 years ago

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3 years ago

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Ghella [55]

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3 years ago

Find the value of the test statistic z using zequalsStartFraction ModifyingAbove p with caret minus p Over StartRoot StartFracti

il63 [147K]

Answer:

C. 2.937

Step-by-step explanation:

Given the following :

H0 : p = 0.25

H1 : p > 0.25

Number of observations (n) = 647

p' = 30% = 0.3

SD = sqrt[(p(1 - p) / n)]

1 - p = 1 - 0.25 = 0.75

SD = sqrt[(0.25 * 0.75) / 647]

SD = sqrt[0.0002897]

SD = 0.0170234

Z = (p' - p) / SD

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Z = 0.05 / 0.0170234

Z = 2.9371187 = 2.937

5 0

3 years ago