Would like some help with this problem.?
The quality control manager at a light bulb factory needs to estimate the average life of a large shipment of light bulbs. The process variance is known to be 10000 hours. A random sample of 64 light bulbs indicated a sample average of 350 hours. Construct a 90% confidence interval for the true average life of light bulbs in this shipment.
- Anonymous2 months ago
unrelated to personal finance. Cheater.
- rustbucketLv 72 months ago
The question does not address the problem.