Introduction To Statistics And Data Analysis
Introduction To Statistics And Data Analysis
6th Edition
ISBN: 9781337793612
Author: PECK, Roxy.
Publisher: Cengage Learning,
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Chapter 16.2, Problem 8E

The effect of a restricted diet in the treatment of autistic children was examined in the paper “Gluten, Milk Proteins, and Autism: Dietary Intervention Effects on Behavior and Peptide Secretion” (Journal of Applied Nutrition [1991]: 1–8). Ten children with autistic syndrome participated in the study. Peptide secretion was measured before diet restrictions and again after a period of restricted diet. The resulting data follow.

Do these data suggest that the restricted diet was successful in reducing mean peptide secretion? Test the relevant hypotheses using the signed-rank test.

Chapter 16.2, Problem 8E, The effect of a restricted diet in the treatment of autistic children was examined in the paper

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Please conduct a step by step of these statistical tests on separate sheets of Microsoft Excel. If the calculations in Microsoft Excel are incorrect, the null and alternative hypotheses, as well as the conclusions drawn from them, will be meaningless and will not receive any points. 4. One-Way ANOVA: Analyze the customer satisfaction scores across four different product categories to determine if there is a significant difference in means.  (Hints: The null can be about maintaining status-quo or no difference among groups)   H0 =   H1=
Please conduct a step by step of these statistical tests on separate sheets of Microsoft Excel. If the calculations in Microsoft Excel are incorrect, the null and alternative hypotheses, as well as the conclusions drawn from them, will be meaningless and will not receive any points                                                                                                                          2. Two-Sample T-Test: Compare the average sales revenue of two different regions to determine if there is a significant difference.  (Hints: The null can be about maintaining status-quo or no difference among groups; if alternative hypothesis is non-directional use the two-tailed p-value from excel file to make a decision about rejecting or not rejecting null)   H0 =   H1=
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