5. A sample of 40 sales receipts from a grocery store has X-bar=$137. Suppose it is known that the population standard deviation for receipts is $30.2. Use these values to test, at the 99% confidence...

write    out    each    of    the    four    steps    of    hypothesis    testing:    (1)
write    down    the    null    and    alternative    hypotheses,    (2)    calculate    the    test    statistic    (t    or    z)    based    on    the
data    in    the    problem,    (3)    draw    the    rejection    region,    indicating    t*    or    z*,    (4)    conclude    and    write    a    one
sentence    conclusion (what    this    result    means,    in    plain    English).        Use    a    5%    level    of    significance,
unless    otherwise    instructed.

Extracted text: 5. A sample of 40 sales receipts from a grocery store has X-bar=$137. Suppose it is known that the population standard deviation for receipts is $30.2. Use these values to test, at the 99% confidence level, whether or not the mean sales at the grocery store is different from $150.