Preliminary Data Analyses Indicate That It Is Reasonable to Consider

question 69

Essay

Preliminary data analyses indicate that it is reasonable to consider the assumptions for one-way ANOVA satisfied.Perform the required hypothesis test using the critical-value approach.
-At the 0.025 significance level, do the data provide sufficient evidence to conclude that a difference exists between the population means of the three different brands? The sample data are given below.

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Definitions:

Sample Size

The number of subjects or observations included in a sample selected from a population for the purpose of a statistical study.

Confidence Interval

An interval of values within which there is a given level of confidence (e.g., 95%) where the population value lies.

Increased Accuracy

The enhancement of precision or correctness in measurement, observation, or analysis.

Simple Random Sampling

A method of selecting a sample in which every member of the population has an equal chance of being chosen.