Confidence Intervals for Population Proportions

5.The new Twinkle bulb is being developed to last more than 1000 hours. A random sample of 100 of these new bulbs is selected from the production line. It was found that 64 lasted more than 1000 hours. Find the point estimate for the population proportion, the margin of error for a 95% confidence interval and then construct to the 95% confidence interval for the population proportion

a. Find the margin of error E =

b. Construct a 95% confidence interval for the population proportion p of all Twinkle bulbs =

5.The new Twinkle bulb is being developed to last more than 1000 hours. A random sample of 100 of these new bulbs is selected from the production line. It was found that 64 lasted more than 1000 hours. Find the point estimate for the population proportion, the margin of error for a 95% confidence interval and then construct to the 95% confidence interval for the population proportion

a. Find the margin of error E =

b. Construct a 95% confidence interval for the population proportion p of all Twinkle bulbs =

### Recently Asked Questions

- System Mechanical makes aircraft equipment in the United States for sale in Europe and Asia. The company has over 10,000 employees. Among the full and

- A check cashing company will give you $101 in cash and you repay them $120 in two weeks. What is the effective annual rate of interest for this arrangement?

- Bologna Inc. has provided the following production and total cost data for two levels of monthly production volume. Production Volume: 7,000 units 10,000 units