1. Golf course designer Roberto Langabeer is evaluating two sites, Palmetto Dunes and Ocean Greens, for his...
Question:
1. Golf course designer Roberto Langabeer is evaluating two sites, Palmetto Dunes and Ocean Greens, for his next golf course. He wants to prove that Palmetto Dunes residents (population 1) play golf more often than Ocean Greens residents (population 2). Roberto commissions a market survey to test this hypothesis. The market researcher used a random sample of 64 individuals from each suburb, and reported the following: x¯1 = 15 times per month and x¯2 = 14 times per month. Assume that σ1 = 2 and σ2 = 3. With α = .01, the observed z value is ___.
a) 2.22
b) 12.81
c) 4.92
d) 3.58
e) 1.96
2.Golf course designer Roberto Langabeer is evaluating two sites, Palmetto Dunes and Ocean Greens, for his next golf course. He wants to prove that Palmetto Dunes residents (population 1) play golf more often than Ocean Greens residents (population 2). Roberto commissions a market survey to test this hypothesis. The market researcher used a random sample of individuals from each suburb, and reported the following: x¯1 = 16 times per month and x¯2= 14 times per month. Assume that σ1 = 4 and σ2 = 3. With σ1 = .01, the appropriate decision is ___.
a) do nothing
b) reject the null hypothesis σ1 < σ2
c) accept the alternate hypothesis μ1- μ2
d) reject the alternate hypothesis n1 = n2 = 64
e)do not reject the null hypothesis μ1 - μ2 = 0
Business Analytics Data Analysis and Decision Making
ISBN: 978-1305947542
6th edition
Authors: S. Christian Albright, Wayne L. Winston