A teacher weighed the backpacks of 4 students. Here are the weights (in kilograms): 5,7,9,11 The mean is = 8 kg. Which of these formulas gives the standard deviation? Choose 1 answer. = 8z = 8z = 8₂ = 5+7+9+11 4 (5-8) + (7-8) + (9-8) + (11-8) ය. တ (5-8)²+(7-8)2 + (9-8)2 + (11-8)² 3 (5-8) + (7-8) + (9-8) + (11-8) 3 (5-8)²+(7-8)² + (9-8)² + (11-8)² 3

A hypothesis test is to be performed, and it is decided to reject the null hypothesis if P ≤ 0.10. If H0 is in fact true, what is the maximum probability that it will be rejected?

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