Question

In: Statistics and Probability

A research group conducted an extensive survey of 3155 wage and salaried workers on issues ranging...

A research group conducted an extensive survey of 3155 wage and salaried workers on issues ranging from relationships with their bosses to household chores. The data were gathered through hour-long telephone interviews with a nationally representative sample. In response to the question, "What does success mean to you?" 1499 responded, "Personal satisfaction from doing a good job." Let p be the population proportion of all wage and salaried workers who would respond the same way to the stated question. Find a 90% confidence interval for p. (Round your answers to three decimal places.)

A)find the upper limit

B) Find thelower limit

please post all steps. do not use excel. please try to explain each step so I can learn how to do this.

Expert Solution

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Answer:

Given

n = 3155

x = 1499

phat = x/n = 0.47512

90% confidence z = 1.645

= 0.4751 +- 1.645*sqrt(0.4751*(1-0.4751)/3155))

= 0.4751 +- 0.014625

= >

LL = 0.4605

UL = 0.4897

orchestra answered 2 years ago

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