A bolt manufacturer wants to investigate the machine that produces bolts with a diameter of 0.27 centimeter. if the variance of the diameters is equal to 0.025, then the machine is working as expected. a random sample of 11 bolts has a standard deviation of 0.3199. does the manufacturer have evidence at the a =0.025 level that this variance of the bolt diemeters is more than required?assum the population is normally distributed. 1.state the null and alternative hypothesis. round to 4 decimal places when necessary. 2.determine the critical value of the test statistic. If the test is two tailed, separate the values with a comma. Round to 3 decimal places. 3.determine the value of the test statistic. Round to 3 decimals. 4. Make the decision to reject or fail hypothesis. 5. What is the conclusion?
A bolt manufacturer wants to investigate the machine that produces bolts with a diameter of 0.27 centimeter. if the variance of the diameters is equal to 0.025, then the machine is working as expected. a random sample of 11 bolts has a standard deviation of 0.3199. does the manufacturer have evidence at the a =0.025 level that this variance of the bolt diemeters is more than required?assum the population is
1.state the null and alternative hypothesis. round to 4 decimal places when necessary.
2.determine the critical value of the test statistic. If the test is two tailed, separate the values with a comma. Round to 3 decimal places.
3.determine the value of the test statistic. Round to 3 decimals.
4. Make the decision to reject or fail hypothesis.
5. What is the conclusion?
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