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Citrus2011 [14]
3 years ago
9

Sociologists say the percentage of the classic music lovers is about 5%. From the survey, we know that only 83 out of 2000 peopl

e listen to the classic music. Let denote the proportion of the classic music lovers. The hypotheses are H0: p=0.05 vs Ha: p≠0.05. The p-value for this two-tailed test based on the normal distribution is 0.09. What is the p-value for a chi-square test?
Mathematics
1 answer:
disa [49]3 years ago
5 0

Answer:

p value from chi square = 0.081

Step-by-step explanation:

Given that sociologists say the percentage of the classic music lovers is about 5%. From the survey, we know that only 83 out of 2000 people listen to the classic music. Let denote the proportion of the classic music lovers. The hypotheses are H0: p=0.05 vs Ha: p≠0.05

p value = 0.09

Instead of this if we do chi square

H0: Proportion of music lovers is 5% and non music lovers is 95%

Ha: Proportions are not as per the estimate

(Two tailed chi square test)

Observed       83           1917       2000

Expected        100          1900     2000

O-E                  -17              17          0

chi square

(O-E)^2/E        2.89         0.1521     3.0421

df =1

p value from chi square = 0.081

Though p value is not exactly the same, the conclusion in both tests are the same

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3 years ago
Which function has the range (-infinity,0)u(2,infinity)?
amm1812

Answer with explanation:

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4 0
3 years ago
Read 2 more answers
What is the value of x?<br> O 2 units<br> O 3 units<br> O 5 units<br> 08 units
Anna71 [15]

Answer:

The value of x is 5 units ⇒ C

Step-by-step explanation:

In the given figure

∵ Δ ABC is a right triangle at vertex B

∵ AC is its hypotenuse

∵ BD ⊥ AC

∴ (BD)² = AD × DC

∵ BD = 10 units

∵ AD = x units

∵ DC = 4x units

→ Substitute them in the rule above

∴ (10)² = x × 4x

∴ 100 = 4x²

→ Divide both sides by 4

∵ \frac{100}{4} = \frac{4x^{2}}{4}

∴ 25 = x²

→ Take √  for both sides

∴ 5 = x

∴ The value of x is 5 units

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