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Tom [10]
3 years ago
15

A recent study indicated that 17 percent of adults in the country actively seek out science news sites to keep current on topics

in science. A university researcher believes that percent is too low. From a random sample of adults in the country, the researcher found that 22 percent of the sample actively seek out science news sites. Which of the following is the most appropriate method for the researcher’s study?
A) A two-sample z-test for a difference in population proportions
B) A two-sample z -test for a difference in population proportions
C) A one sample z-test for a difference in population proportions
D) A one sample z-test for a sample proportion
E) A one sample z-test for a population proportion
Mathematics
2 answers:
fomenos3 years ago
5 0

Answer:

E) A one sample z-test for a population proportion

Step-by-step explanation:

This is a significance test problem where there is only one sample. Therefore, it is a one sample z-test for a population proportion

dybincka [34]3 years ago
3 0

Answer:

b

Step-by-step explanation:

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3 years ago
Mark simplified three over five divided by five over eight.; his work is shown below. Identify where he made his error. Original
yulyashka [42]

Answer:

step 3

Step-by-step explanation:

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3 years ago
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2.) Bob has two weekend jobs. Last weekend he made a total of $77 after
Butoxors [25]

Answer:

Step-by-step explanation:

x= money earned per hour working as a cashier.

y=money earned per hour working delivering newspapers.

We propose the following system of equations:

5x + 4y =77

6x + 3y=78

We solve the system by reduction method:

-6*(5x+4y=77) ⇒  -30x-24y=-462

5*(6x+3y=78)⇒     30x+15y=390

                             ---------------------------

                                     -9y=-72  ⇒   y=-72 /-9=8

Now, we get the value of "x" replacing the value of "y" by "8" in any part of the equation above.

5x + 4(8)=77

5x+32=77

5x=77-32

5x=45

x=45/5=9

therefore;  

money earned per hour working as a cashier= $9/ hour

money earned per hour working delivering newspapers=$8/hour

7 0
3 years ago
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3 years ago
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Artemon [7]
This is a VERY long question XD
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3 years ago
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