SOLUTION: The breaking strengths of cables produced by a certain company are approximately normally distributed. The company announced that the mean breaking strength is 220 pounds. with a s

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Question 193168: The breaking strengths of cables produced by a certain company are approximately normally distributed. The company announced that the mean breaking strength is 220 pounds. with a standard deviation of 188. A consumer protection agency claims that the actual standard deviation is higher. Suppose that the consumer agency wants to carry out a hypothesis test to see if its claim can be supported. State the null hypothesis Ho and the alternative hypothesis H1 they would use for this test.
Ho:
H1:

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The breaking strengths of cables produced by a certain company are approximately normally distributed. The company announced that the mean breaking strength is 220 pounds. with a standard deviation of 188. A consumer protection agency claims that the actual standard deviation is higher. Suppose that the consumer agency wants to carry out a hypothesis test to see if its claim can be supported. State the null hypothesis Ho and the alternative hypothesis H1 they would use for this test.
Ho: u = 220
H1: u > 220
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Cheers,
Stan H.