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Vanyuwa [196]
3 years ago
10

In a survey from 1998, 449 teenagers were surveyed about the music that they listen to. Of these teenagers, 129 of them said tha

t their favorite genre of music is hip-hop. In a similar survey from 2008, 176 of 509 teenagers surveyed said that their favorite genre is hip-hop. Use a two-proportion hypothesis test to determine whether the proportion of teenagers whose favorite genre of music is hip-hop has changed from 1998 to 2008. Assume that the samples are random and independent. Use α=0.01. Let the sample from 1998 correspond to sample 1 and the other to sample 2. (a) Which answer choice shows the correct null and alternative hypotheses for this test? Select the correct answer below: H0:p1=p2; Ha:p1p2, which is a right-tailed test. H0:p1=p2; Ha:p1≠p2, which is a two-tailed test.
Mathematics
1 answer:
marshall27 [118]3 years ago
6 0

Answer:

H0:p1=p2; Ha:p1≠p2, which is a two-tailed test.

Step-by-step explanation:

We formulate our hypotheses as

H0:p1=p2; Ha:p1≠p2, which is a two-tailed test.

Supposing the probability or proportion of the first survey is equal to the probability or proportion of the second survey. This will be the null hypothesis and the alternative hypotheses would be that these two proportions or probabilities are unequal.

This is a two tailed test.

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The height of a cylinder is 8 centimeters. The circumference of the base of the cylinder is 20π centimeters. Which measurement i
trapecia [35]

Answer: 2514.28\ cm^3

Step-by-step explanation:

Given

The height of the cylinder is h=8\ cm

Circumference of the base is 20\pi \ cm

suppose 'r' is the radius of the cylinder

\Rightarrow 2\pi r=20\pi\\\Rightarrow r=10\ cm

The volume of a cylinder is V=\pi r^2h

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2 years ago
13. Find the perimeter.
kherson [118]
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3 + 8 + 5 + 4 + 4 + 4
4 0
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makvit [3.9K]

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Step-by-step explanation:

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4 0
3 years ago
Please help m solve this it's about shaded areas. I need it fast. PLZ HELP THANK YOU IF YOU DO AND U R SO AMZING IF U DO>
sukhopar [10]

A = area of the circle

A = pi*r^2

A = pi*11^2

A = 121pi

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B = area of the rectangle

B = length*width

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B = 24

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C = blue shaded area

C = A - B

C = 121pi - 24 which is the exact area in terms of pi

C = 356.1327 is what you'd get if you used a calculator

C = 356.13 is the result after rounding to the nearest hundredth

<h3>The final answer is 356.13</h3>
5 0
3 years ago
a bottling machine can fill 300 bottles in 5 minutes at this rate how many bottles can be filled in 8 minutes
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