Eight Cities Were Asked to Report Data on Fatalities in Auto

question 143

Short Answer

Eight cities were asked to report data on fatalities in auto crashes. The Department of Safety wanted to know if safety devices have an effect on mortality. The department received the following data on the number of fatalities per every 100 crashes where the vehicle was traveling over 40 m.p.h. The type of safety device was also reported. If the data were as follows, answer the questions below.
a. What is the value of SS between ?
b. What is the value of ?
c. What is the value of F obt ?
d. Would you reject H₀ , using a = 0.01?

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Definitions:

Type II Error

A statistical term referring to the error that occurs when a false null hypothesis is not rejected, indicating a false negative finding.

Type II Error

The error that occurs when a false null hypothesis is not rejected; failing to detect an effect that is present.

Type II Error

A statistical error that occurs when a test fails to reject a false null hypothesis, also known as a false negative.

Effect Size

A quantitative measure of the strength of a phenomenon or the magnitude of a difference between groups in a statistical analysis.