Posted by **Anonymous** on Sunday, December 5, 2010 at 1:47pm.

7. A researcher selects a random sample. A 90% confidence interval for a population mean

A) is an interval with margin of error ± 90%. B) has the property that if we repeatedly selected our random sample in exactly the same

way, each time constructing a different 90% confidence interval for , then in the

long run 90% of those intervals would contain . C) (a) and (b) are both true. D) is an interval that has width .90.

## Answer This Question

## Related Questions

- statistics - A simple random sample of 60 items resulted in a sample mean of 80...
- Statistics (42) - A simple random sample of 60 items resulted in a sample mean ...
- Statistics - An opinion poll asks a random sample of 100 college seniors how ...
- Economics (41) - A simple random sample of 60 items resulted in a sample mean of...
- statistics - A large school district would like to estimate the mean score for ...
- math - The new Twinkle bulb is being developed to last more than 1000 hours. A ...
- Statistics 101 - A researcher plans to use a random sample of n= 500 families to...
- stat - Find an estimate of the sample size needed to obtain the specified margin...
- math - If the true population standard deviation was known to be 3.0, then ...
- Statistics - Which of the following statements correctly interprets a 95% ...

More Related Questions