For this study: a. Define the parameter of interest in the context of the study and assign
Question:
For this study:
a. Define the parameter of interest in the context of the study and assign a symbol to it.
b. State the null hypothesis and the alternative hypothesis using the symbol defined in part (a).
c. What is the observed proportion of times the lady correctly identified what was poured first into the cup? What symbol should you use to represent this value?
d. Suppose that you were to generate the null distribution of the sample proportion of correct answers, that is, the distribution of possible values of sample proportion of correct identifi cations if the lady always guesses. Where would you anticipate this distribution would center? Also, do you anticipate the SD of the null distribution to be negative, positive, or 0? Why?
e. Use an applet to generate the null distribution of sample proportion of correct identifi cations and use it to determine the standardized statistic.
f. Interpret the standardized statistic in the context of the study. (Hint: You need to talk about the value of your observed statistic in terms of standard deviations assuming ______ is true.)
g. Based on the standardized statistic, state the conclusion that you would draw about the research question of whether the lady does better than randomly guess.
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Step by Step Answer:
Introduction To Statistical Investigations
ISBN: 9781118172148
1st Edition
Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy