Lesson8HW_KSS_07062016

Lesson8HW_KSS_07062016 - STAT 500 Lesson 8 NAME Kyle Shank...

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STAT 500 Lesson 8 NAME: Kyle Shank Answer the following questions showing all work. If you use Minitab or other statistical software, include the appropriate output along with an explanation. Output without explanation will not receive full credit. Round all answers to 3 decimal places. If you have any questions, post them to the course discussion board. 1. The owners of a local diner that specializes in waffles are considering changing their waffle recipe. They would like to design a research study and collect data to determine if customers prefer their new recipe over their own recipe. (20 points) A. Research design #1: Randomly assign every customer to taste a waffle made with either the old or new recipe (i.e., each participants gets only one waffle). Ask each individual to rate the waffle that they tasted as either “good” or “not good.” (1) Does this scenario involve two independent means, two paired means, or two independent proportions? (2) Write the appropriate null and alternative hypotheses. 1. This is a research question relating a categorical variable (waffle taste from “good” to “not good”) taken from two distinct groups (those that received old recipe waffles v. new recipe waffles). This is therefore a test of two independent proportions. 2. H 0 = No diff erence between thetwo population proportions H A = A difference betweenthetwo population proportions B. Research design #2: Randomly assign every customer to taste a waffle made with either the old or new recipe (i.e., each participants gets only one waffle). Ask each individual to rate the waffle that they tasted on a scale of 0 to 100. (1) Does this scenario involve two independent means, two paired means, or two independent proportions? (2) Write the appropriate null and alternative hypotheses. 1. This is a research question relating a quantitative variable (waffle taste from 0 to 100) taken from two distinct groups (those in the randomly selected partitions). This is therefore a test of two independent means.
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  • Fall '13
  • Sean Todd
  • Null hypothesis, Statistical hypothesis testing, Statistical significance, following questions, new recipe

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