IMG_0660

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School

University of Memphis *

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Course

3020

Subject

Statistics

Date

Apr 3, 2024

Type

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Pages

Uploaded by gabriellechavers36

exception that one had the old cockpit design and the other had the new cockpit design. Fifteen pilots were recruited to fly in both simulators. Twenty random “troubleshooting” exercises were presented in each simulator and the number of CFIT accidents was recorded for each simulator type. The order of which simulator each pilot fly in first was counterbalanced across subjects. Old cockpit: M=6.0, New cockpit: M = 7.5 D=-1.47 with Sp = 3.05 We will use a = .05 n=15 Question 1: What are the null and alternative hypotheses, respectively? Write out using appropriate statistical notation. Null hypothesis HO: ud =0 Alternative Ha: ud /=0 Question 2: What are the df?? Df= 14 Question 3: Given the df above, what is the critical value. (Use the table at the end of your book.) Critical value =2.15 Question 4: What is the standard error for the t statistic? Standard error = .79 Question 5: What is the value of the t-statistic? t-statistic = 1.86 Question 6: Should the null hypothesis be accepted or rejected? Accepted Question 7: c) There was no different in the safety (i.e., number of CFIT accidents) for the old cockpit design versus the new cockpit design.

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