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REY [17]
3 years ago
8

What is the answer plz help

Mathematics
1 answer:
Alex73 [517]3 years ago
6 0
1.
1 + 2 = 3 \:  \: 3 - 4 =  - 1
2.
30 - 10 = 20 - 15 = 5 + 10 = 15
4.
12 - 5 = 7
5.
1 + 18 = 19 - 11 = 9 + 16 = 25
6.
30 - 5 = 25 + 11 = 36
7.
- 6
9.
1196 + 18 = 1214 + 3 = 1217
1217 - 5 = 1212 + 27 = 1239
1239 - 38 = 1201







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On the day before an election in a large city, each person in a random sample of 1,000 likely voters is asked which candidate he
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Answer:

It's not possible to reach a conclusion about who will vote candidate Taylor because this is a random sample and not a population census or experiment.

Step-by-step explanation:

It is impossible to reach a conclusion about the proportion of all likely voters who plan to vote for candidate Taylor because the 1,000 likely voters in the sample represent only a small fraction of all likely voters in a large city.

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In a random sample of 300 attendees of a minor league baseball game, 182 said that they bought food from the concession stand. C
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Answer:

<em>90% confidence interval for the proportion of fans who bought food from the concession stand</em>

(0.5603,0.6529)

Step-by-step explanation:

<em>Step(i)</em>:-

<em>Given sample size 'n' =300</em>

Given data  random sample of 300 attendees of a minor league baseball game, 182 said that they bought food from the concession stand.

<em>Given sample proportion </em>

<em>                        </em>p^{-}  = \frac{x}{n} = \frac{182}{300} =0.606

level of significance = 90% or 0.10

Z₀.₁₀ = 1.645

<em>90% confidence interval for the proportion is determined by</em>

(p^{-} - Z_{0.10}\sqrt{\frac{p(1-p)}{n} }  , p^{-} +Z_{0.10}\sqrt{\frac{p(1-p)}{n} })

(0.6066 - 1.645\sqrt{\frac{0.6066(1-0.6066)}{300} }  ,0.6066+1.645\sqrt{\frac{0.6066(1-0.6066)}{300} })

(0.6066 -  0.0463  ,0.6066 +  0.0463)

(0.5603,0.6529)

<u>final answer</u>:-

<em>90% confidence interval for the proportion of fans who bought food from the concession stand</em>

(0.5603,0.6529)

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