1. Which of the following is NOT a requirement to satisfy the conditions for ANOVA?

a.Each group represents a simple random sample from its respective population.

b.The population are normally distributed.

c.All samples are dependent of one another.

d.The population have the same variance.

2. Are all batteries created equal? An experiment was carried out to determine this. Two brand name battery companies and a generic company were compared. D-batteries were put into flashlights and continuously left on. The data provided is the number of hours the flashlight remained lit. Is this sufficient evidence to determine if the mean times for the different companies are different? Use a 0.05 significance level.

What are the hypothesis statements for this situation?

3. Are all batteries created equal? An experiment was carried out to determine this. Two brand name battery companies and a generic company were compared. D-batteries were put into flashlights and continuously left on. The data provided is the number of hours the flashlight remained lit. Is this sufficient evidence to determine if the mean times for the different companies are different? Use a 0.05 significance level. Click here to open this data in StatCrunch.

P-values=

Reject Ho or Retain Ho

Which summary statement best reflects the findings of the hypothesis test above

a.The sample data suggests that the proportion of batteries is the same for all three types

b.The sample data suggests that the mean lifetime of the batteries for the the 3 types are different.

c.The sample data suggests that the mean lifetime of the batteries for the the 3 types are not different.

d.The sample data suggests that battery life and battery are dependent.