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The breaking strengths of cables produced by a certain company are approximately normally distributed.
The breaking strengths of cables produced by a certain company are approximately normally distributed.
The company announced that the mean breaking strength is 2100 pounds with a standard deviation of 181.5
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 H'o hypothesis and the alternate hypothesis H'1 they would use for this test.