Discussion:
Reviewing the sample problem below:
Sprinkler Systems. A manufacturer of sprinkler systems designed for fire protection claims that the average activating temperature is at least 135 degrees F. To test this claim, you randomly select a sample of 32 systems and find the mean activation temperature between 133 degrees F with a standard deviation of 3.3 degrees F. At a level of significance of 0.10, do you have enough evidence to reject the manufacturers claim?
You need to do the following:
• Post the statement of this problem.
• Discuss the importance of obtaining a random sample.
• Identify the claim and state Ho and Ha.
• State the level of significance.
• Discuss the possibility of a Type I or Type II error.
On a separate page you need to do the following:
• Find the test statistic.
• Find the p-value.
• Decide whether to reject the null hypothesis.
• Interpret the decision in the context of the original claim.