# statistics

posted by .

otorola discovered that the average defect rate for parts produced on an assembly line varies from run-to-run and is approximately normally distributed with a mean equal to 3 defects per million. Assume that the goal at Motorola is for the average defect rate to vary no more than 1.5 standard deviations above or below the mean of 3. How likely is it that the goal will be met?.

• statistics -

You are looking for the area under a normal curve between -1.5 and 1.5 standard deviations.

Use a calculator to find this area

or Use a z-table.

• statistics -

0.8664

## Similar Questions

1. ### statistics

A company manufacturers batteries of 18 and there is a 3% rate of defects. Find the standard deviation for the number of defects per batch. Did you mean to write: "A company manufacturers batteries IN BATCHES of 18 and there is a 3% …
2. ### statistics

Can someone provide me with some assistance in answering this question.. A company manufacturers batteries in BATCHES of 18 and there is a 3% rate of defect. Find the standard deviation for the number of defects per batch. The probability …
3. ### Problem solving

The Manufaturing Company allows the defect rate of 0.5% on its production line. The defect average for last week was 6 items out of 1,800. What is the difference between the allowed defect rate and the defect average for last week?
4. ### mth

The Manufaturing Company allows the defect rate of 0.6% on its production line. The defect average for last week was 4 items out of 4,400. What is the difference between the allowed defect rate and the defect average for last week?
5. ### statistics

The number of defects in a random sample of 200 parts produced by a machine is binomially distributed with p = .03. Based on this information, the expected number of defects in the sample is 6. Is it True or False?
6. ### Statistics

On the daily run of an express bus, the average number of passengers is 48. The standard deviation is 3. Assume the variable is normally distributed. Find the probability that the bus will have Between 36 and 40 passengers
7. ### statistics

A study of 36 marathon runners showed that they could run at an average rate of 7.8 miles per hour. The sample standard deviation is 0.6. Find a point estimate of the population mean. Find the 90% confidence interval forthe mean of …
8. ### statistics

A manufacturer of fishing line claims that by using machines, rather than people, at the assembly plant that this will reduce the amount of defects in the line. Currently the defective rate is 15 per 1000 ft. Which is the correct null …
9. ### probability

hydraulic landing assemblies coming from an aircraft rework facility are each inspected for defects. Historical records indicate that 8% have defects in shafts only, 6% have defects in bushing only, and 2% have defects in both shafts …
10. ### statistic

A new car was put into production. It involved many assembly tasks. Each car was inspected at the end of the assembly line and the number of defects per unit was recorded. For the first 100 cars produced, there were 40 defective cars. …

More Similar Questions