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Katarina [22]
3 years ago
6

Use the sample data and confidence level given below to complete parts (a) through (d)

Mathematics
1 answer:
Marizza181 [45]3 years ago
7 0

Step-by-step explanation:

Given x = 1014       n= 2625

The best point estimate of the population proportion p is the sample proportion. The sample proportion is the number of successes divided by the sample size

 =  1014÷ 2625 = 0.3862

for confidence  level 1 - α = 0.90  z value for 90% confidence = 1.645

=0.3862+1.645 √0.3862(1-0.3862)÷2625 = √0.2370÷ 2625 = 0.000305

 = 0.0.3862 - 0.000305 = 0.3858

= 0.0.3862 + 0.000305 = 0.3865

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