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iris [78.8K]
3 years ago
12

HELP PLEASE.....EASY QUESTION!!!!

Mathematics
1 answer:
wlad13 [49]3 years ago
3 0

Answer:

90% of confidence interval for the true population of club members who use compost

(0.44424 , 0.45576)

Step-by-step explanation:

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

Given that the size of the sample 'n' =200

Given that the sample proportion

            p = 45% = 0.45

Level of significance = 90% or 10%

Critical value Z₀.₁₀ = 1.645

<u><em>Step(ii):</em></u>-

90% of confidence interval for the true population of club members who use compost

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

((0.45 - 1.645\sqrt{\frac{0.45(1-0.45)}{200} } , 0.45 + 1.645\sqrt{\frac{0.45(1-0.45)}{200} })

(0.45 - 0.00576 , 0.45 +0.00576)

(0.44424 , 0.45576)

<u><em>Final answer:-</em></u>

90% of confidence interval for the true population of club members who use compost

(0.44424 , 0.45576)

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