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dlinn [17]
3 years ago
10

Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.028; confi

dence level: 99%; pp is unknown.
a. 1116
b. 2223
c. 1939
d. 2115
Mathematics
1 answer:
TiliK225 [7]3 years ago
3 0
The answer I think it’s number b
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Consider the hypothesis test below.
Pavel [41]

Answer:

Z_{H0} =1.79

p-value: 0.0367

Decision: Reject H₀

Step-by-step explanation:

Hello!

Hypothesis to test:

H₀:ρ₁-ρ₂=0

H₁:ρ₁-ρ₂>0

The statistic to use to test the difference between two population proportions is the approximation of Z

Z=<u>     (^ρ₁-^ρ₂)-(ρ₁-ρ₂)     </u>   ≈N(0;1)

   √ (<u>^ρ₁(1-^ρ₁))/n₁)+(^ρ₂(1-^ρ₂)/n₂))</u>

                   

Z=<u>                    (0.28-0.15)-0                    </u>= 1.79

   √ (<u>0.28(1-0.28)/200)+(0.15(1-0.15)/300)</u>

p-value

Remember: The p-value is defined as the probability corresponding to the calculated statistic if possible under the null hypothesis (i.e. the probability of obtaining a value as extreme as the value of the statistic under the null hypothesis).

P(Z>1.79)= 0.0367

Conclusion:

Comparing the p-value against the significance level, you can decide to reject the null hypothesis.

I hope you have a SUPER day!

8 0
3 years ago
Use pascal's triangle to expand the binomial (x+3)^4
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Answer: the answer is in the photo pls check this out and hope this helps can u give me brainliest

Step-by-step explanation:

6 0
3 years ago
Plssss help (ZOOM IN TO SEE FULL PIC)
MA_775_DIABLO [31]

Answer:

d and e

Step-by-step explanation:

IV must have a pos x value and a negative y value

we can eliminate everything except d e & f

f is wrong bc it has a positive 3 value

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2 years ago
EZ 25 POINTS!!!!!
alexandr1967 [171]

Answer: 9

Step-by-step explanation:

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3 years ago
If the markup is 30% on a cell phone that has a<br> selling price of $520, what is the initial cost?
Olegator [25]

Answer:

The initial cost of the cell phone was $364

Step-by-step explanation:

Since there was a 30% markup, 70% of the new cost is the initial cost. Multiply 520 by 0.7 on a calculator and you get 364

7 0
3 years ago
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