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Mathematics, 20.04.2020 20:39 cuppykittyy
The mean and standard deviation of a random sample of 7 baby orca whales were calculated as 430 pounds and 26.9 pounds, respectively. Assuming all conditions for inference are met, which of the following is a 90 percent confidence interval for the mean weight of all baby orca whales.
a. 26.9 ± 1.895 (430/√7 )
b. 26.9 ±1.943 (430/√7)
c. 430 ±1.440 (26.9/√7)
d. 430 ± 1.895 (26.9/√7)
e. 430 ± 1.943 (26.9/√7)
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