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13.3 Exercise 2

Avg difficulty 2.5

There are multiple variants of the virus that causes COVID-19. The length of hospital stays for patients afflicted with various strains of COVID-19 is shown in the table.

Delta StrainOmicron Strain Alpha Strain Gamma Strain Beta Strain
13.9 11.7 18.2 16.9 9.3
14.9 15.1 14.6 12.8 15.8
16.8 9.9 10.1 11.2 16.4

Test whether the mean length of hospital stay is the same or different for the various strains of COVID-19. Construct the ANOVA table, find the p-value, and state your conclusion. Use a 5% significance level.

OpenStax Introductory Statistics 2e, 13.3 Facts About the F Distribution, exercise 2

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Adapted from Introductory Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Statistics 2e. Imported at revision 50ec917.