Posted by **Josh** on Saturday, October 31, 2009 at 3:32pm.

The following data set represents the repair costs (in dollars) for a random sample of 30 dishwashers.

41.82 52.81 57.80 68.16 73.48 78.88 88.13 88.79

90.07 90.35 91.68 91.72 93.01 95.21 95.34 96.50

100.05 101.32 103.59 104.19 105.62 111.32 117.14 118.42

118.77 119.01 120.70 140.52 141.84 147.06

(a) Find the point estimate of the population mean.

(b) Find the margin of error for a 95% level of confidence.

(c) Construct a 95% confidence interval for the population mean and interpret the results.

The point of estimate is 97.11. Is that correct?

I dont know where to start with b

## Answer this Question

## Related Questions

- Psychology Statistics - Determine whether the numerical value is a parameter or ...
- statistics - A study is to be conducted to determine whether the mean cost of ...
- Statistics - A computer repair service found that a random sample of 45 repair ...
- Statistics - Select a random sample of 30 student responses to question 6, "How ...
- Statistics - Select a random sample of 30 student responses to question 6, "How ...
- statistics - Do you want to own your own candy store? Wow! With some interest in...
- statistics - My mean is 175.5 My standard deviation is=90.57 Sample=25 ...
- statistics - Annual household incomes in a certain region have a distribution ...
- statistics - Do you want to own your own candy store? Wow! With some interest ...
- statistics - Find the mean, median, and mode for the following set of data which...