Problem 4: The customer service department for a wholesale electronics outlet cl

Question

Problem 4: The customer service department for a wholesale electronics outlet claims that 50% of all customer complaints are resolved to the satisfaction of the customer. In order to test this claim, a random sample of 15 customers who have filed complaints is selected Use the binomial tables to find each of the following if we assume that the claim is true: 041) P(x s 13) Q42) P/x>10)- 043) Ptx 2 14) 044) P(9 sxs 12)- 045) Pix s 9) a) 0.9999 b) 09995 c) 0.6000 d) 0.5000 e) None of the above a) 0.0592 b) 0.9999 c) 1.0520 d) 1.5555 e) None of the above a) 0.0001 b) 0.0410 c)0.0005 d) 1.0500 e) None of the above a) 1.0 b) 0.2999 c)0.1500 d) 2.0000 e) None of the above a) 0.0138 b) 0.8491 c) 1.0050 d).04180 e) None of the above

Explanation / Answer

From the binomial table, the required probabilities will be:

Q41) P(x < 13) = 0.9995; Option B is correct.

Q42) P(x > 10) = 0.0592; Option A is correct.

Q43) P(x > 14) = 0.0005; Option C is correct.

Q44) P(9 < X < 12) = 0.2999; Option B is correct.

Q45) P(x < 9) = 0.8491; Option B is correct.

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