For Exercises 6.23 to 6.25, see page 304; for 6.26 and 6.27, see pages 305–306; for 6.28 to 6.30, see page 309; for 6.31 and 6.32, see page 311; and for 6.33, see page 313.
6.25 An interval for 95% of the sample means.
In the setting of the previous two exercises, about 95% of all samples will capture the true mean of all the invoices in the interval plus or minus ________. Fill in the blank.
6.25
$52.