Starbucks would like you to conduct a study about its customers' coffee purchasing habits at its location at Buckhead Atlanta. Suppose you collected data from 60 randomly selected customers through a week and determine the following results:The sample mean amount spent was $7.25 with a sample standard deviation of $1.25The proportion of customers that say they "definitely will" recommend that location to family and friends is 0.31. At a 0.05 level of significance, is there evidence that the population mean amount spent was different from $6.50Determine the p-value in (a)At a 0.05 level of significance, is there evidence that the proportion of all customers that says "definitely will" recommend that location to family and friends is more than 0.50

Name: Starbucks would like you to conduct a study about its customers' coffe
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Description: Starbucks would like you to conduct a study about its customers' coffee purchasing habits at its location at Buckhead Atlanta. Suppose you collected data from 60 randomly selected customers through a week and determine the following results:The sampl

The sample mean amount spent was $7.25 with a sample standard deviation of $1.25 Sample size, n = 60…

Answered: Starbucks would like you to conduct a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Starbucks would like you to conduct a study about its customers' coffee purchasing habits at its location at Buckhead Atlanta. Suppose you collected data from 60 randomly selected customers through a week and determine the following results:

The sample mean amount spent was $7.25 with a sample standard deviation of $1.25
The proportion of customers that say they "definitely will" recommend that location to family and friends is 0.31.

At a 0.05 level of significance, is there evidence that the population mean amount spent was different from $6.50
Determine the p-value in (a)
At a 0.05 level of significance, is there evidence that the proportion of all customers that says "definitely will" recommend that location to family and friends is more than 0.50

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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