A survey is conducted in Texas city to know the customer satisfaction levels of two companies. 54 customers of Samsung company and 86 customers of Nokia 66 company were randomly selected and were asked to rate their opinion. The survey results are summarized in the following table. ExxonMobil Phillips 66 n = 54 nz = 86 H = 28.6 Hz = 20.44 %3D 01 = 4.17 oz = 5.72 Find the sampling distribution of the difference between two sample means. a) Hy -I, = 32.72, 0-z = 0.8381

A survey is conducted in Texas city to know the customer satisfaction levels of two companies. 54 customers of Samsung company and 86 customers of Nokia 66 company were randomly selected and were asked to rate their opinion. The survey results are summarized in the following table. ExxonMobil Phillips 66 n = 54 nz = 86 H = 28.6 Hz = 20.44 %3D 01 = 4.17 oz = 5.72 Find the sampling distribution of the difference between two sample means. a) Hy -I, = 32.72, 0-z = 0.8381

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 7E

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