Given that X~Bin(n, 0.4), and that the E[X] = 4.8, what is the value of n? a. 12 b. 4.8 O c. 10 d 0.4
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please answer these question within 20 minutes
1.Given that X~Bin(n, 0.4), and that the E[X] = 4.8, what is the value of n? a. 12 b. 4.8 O c. 10 d 0.4
2. Given that X-N(12,9), and that samples of size 64 are taken, what is the standard error of the sample means? a. 9 b. 0.375 c. 2.67 d. 0.14
3.
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