question archive From his purchased bags, Randy counted 120 red candies out of 500 total candies
From his purchased bags, Randy counted 120 red candies out of 500 total candies
Subject:StatisticsPrice:2.87 Bought7
From his purchased bags, Randy counted 120 red candies out of 500 total candies. Using a 90% confidence interval for the population proportion, what are the lower and upper limits of the interval? Answer choices are rounded to the thousandths place.
Purchase A New Answer
Custom new solution created by our subject matter experts
GET A QUOTE
Answer Preview
Answer:
?Lower Limit:=0.209Upper Limit:=0.271?
Step-by-step explanation
Here: ?x=120,N=500?
Standard error of the mean = SEM = √x(N-x)/N3 = 0.019
α = (1-CL)/2 = 0.050
Standard normal deviate for α = Zα = 1.645
Proportion of positive results = P = x/N = 0.240
Lower bound = P - (Zα*SEM) = 0.209
Upper bound = P + (Zα*SEM) = 0.271
