Mathematics, 28.07.2020 23:01 adreyan6221

Identify the value of the CRITICAL VALUE(S) used in a hypothesis test of the following claim and sample data: Claim: "The average battery life (between charges) of this model of tablet is at least 12 hours."
A random sample of 80 of these tablets is selected, and it is found that their average battery life is 11.58 hours with a standard deviation of 1.93 hours. Test the claim at the 0.05 significance level.
a. -0.218
b. -1.645
c. -1.946
d. -1.667

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