Entries by Hannah Wangui

A manufacturer claims that the life span of its tires is 47,000 miles

October 1, 2019 in /by

Question  A manufacturer claims that the life span of its tires is 47,000 miles. You work for a consumer protection agency and you are testing these tires. Assume the life spans of the tires are normally distributed. You select 100 tires at random and test them. The mean life span is 46,811 miles. Assume σ=800. Assuming the manufacturer’s claim is correct, […]

 

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Find the minimum sample size n needed to estimate

October 1, 2019 in /by

Question  Find the minimum sample size n needed to estimate μ for the given values of c, σ, and E. c=0.90  σ= 7.1 E=1 Assume that a preliminary sample has at least 30 members.   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”

 

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