Posted by **Joshua** on Thursday, October 29, 2009 at 11:48pm.

The Internal Revenue Service is studying contributions to charity. The mean calculated from a random sample of 36 returns is $150. Assume that the population standard deviation is known and equal to $20. Construct a 98 percent confidence interval for the population mean.

## Answer This Question

## Related Questions

- statistics - A simple random sample of 25 has been collected from a normally ...
- Statistics - A simple random sample of 25 has been collected from a normally ...
- statistics - A simple random sample of 25 has been collected from a normally ...
- statistics - A specific study found that the average number of doctor visits per...
- Statistics - The null and alternate hypotheses are: H0: μ1 = μ2 H1: &#...
- Statistics - A computer repair service found that a random sample of 45 repair ...
- math statistics - The average price of a gallon of unleaded regular gasoline was...
- math statistics - please help me I've waited for hours The average price of a ...
- Math (Statistic) - Considered the sampling distribution of a sample mean ...
- statistics - In performing a hypothesis test, the null hypothesis is population...

More Related Questions