Listed below are the lead concentrations in mug/g

measured in different traditional medicines. Use a 0.050.05

significance level to test the claim that the mean lead concentration for all such medicines is less than 1818

mug/g.

19.519.5

2222

1212

77

8.58.5

6.56.5

8.58.5

1919

2121

7.57.5

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What are the null and alternative hypotheses?

A.

Upper H 0H0:

muequals=1818

mug/g

Upper H 1H1:

mugreater than>1818

mug/g

B.

Upper H 0H0:

muequals=1818

mug/g

Upper H 1H1:

muless than<1818

mug/g

C.

Upper H 0H0:

mugreater than>1818

mug/g

Upper H 1H1:

muless than<1818

mug/g

D.

Upper H 0H0:

muequals=1818

mug/g

Upper H 1H1:

munot equals1818

mug/g

Determine the test statistic.

nothing

(Round to two decimal places as needed.)

Determine the P-value.

nothing

(Round to three decimal places as needed.)

State the final conclusion that addresses the original claim.

Fail to reject

Reject

Upper H 0H0.

There is

not sufficient

sufficient

evidence to conclude that the mean lead concentration for all such medicines is

greater than

not

less than

equal to

1818

mug/g.