What is the estimated variance of random errors

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Reference no: EM133761408

Rental car company wants to investigate whether the type of car rented affects the length of the rental period. An experiment is run for one week at a particular location, and 10 rental contracts are selected at random for each car type. The results are shown in the following table.
Type of Car Observations

Sub-compact 3 5 3 7 6 5 3 2 1 6
Compact 1 3 4 7 5 6 3 2 1 7
Midsize 4 1 3 5 7 1 2 4 2 7
Full Size 3 5 7 5 10 3 4 7 2 7

(a) Construct the ANOVA table. Is there evidence to support a claim that the type of car rented affects the length of the rental contract? Use α = 0.05.

(b) What is the estimated variance of random errors?

(d) Notice that the response variable in this experiment is a count. Someone suggests to apply the square root transformation to the response ~y = √y. Redo the analysis using the transformed responses ~y. What is your result?

Reference no: EM133761408

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