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gogolik [260]
2 years ago
10

Timed test please answer ASAP

Mathematics
1 answer:
emmasim [6.3K]2 years ago
4 0

Answer:B

Step-by-step explanation:

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In a random sample of 200 Americans, 51% said they favor building more nuclear power plants. In a random sample of 150 French, 4
Varvara68 [4.7K]

Answer:

Yes, there is enough evidence to say the proportions are the same.

Step-by-step explanation:

Null hypothesis: The proportions are the same.

Alternate hypothesis: The proportions are not the same.

Data given:

p1 = 51% = 0.51

n1 = 200

p2 = 48% = 0.48

n2 = 150

pooled proportion (p) = (n1p1 + n2p2) ÷ (n1 + n2) = (200×0.51 + 150×0.48) ÷ (200 + 150) = 174 ÷ 350 = 0.497

Test statistic (z) = (p1 - p2) ÷ sqrt[p(1-p)(1/n1 + 1/n2) = (0.51 - 0.48) ÷ sqrt[0.497(1-0.497)(1/200 + 1/150)] = 0.03 ÷ 0.054 = 0.556

The test is a two-tailed test. At 0.10 significance level the critical values -1.645 and 1.645

Conclusion:

Fail to reject the null hypothesis because the test statistic 0.556 falls within the region bounded by the critical values.

8 0
2 years ago
no one is answering my questions will you be my savior help help help help help help help please please please please please ple
Likurg_2 [28]
If you cross mulitply the answer would be 13.3
3 0
3 years ago
Help numbers 3 pleaaaaaassssseeee
Varvara68 [4.7K]
It is 2 4/5, 2 4/5 is 2.8, 4/5 is greater than 3/4
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KengaRu [80]

Answer:

ye

Step-by-step explanation:

8 0
2 years ago
What is 5/ 8 x 4/ 5?<br> A. 1/2<br> B.1/3<br> C.2/9<br> D.3/8.<br> (in fraction form)
ehidna [41]
<span>5/ 8 x 4/ 5
=20/40
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3 years ago
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