Answered

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A coin produces 3 heads in 20 flips. Another coin produces 5 heads in 15 flips. Are all the conditions for the hypothesis test for the difference between the proportions met? (Let the first coin correspond to sample 1, the second coin correspond to sample 2, and a success be a head.)
O Yes
O No. The samples are not independent
O No. The value np, is less than 5.
O No. The value nap, is not greater than 5.
O No. The value ng is less than 5.
O No. The value nzi, is less than 5.

Sagot :

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