Write the null and alternative hypotheses for the following example. Determine if the example is a case of a two-tailed, a left-tailed, or a…

Write the null and alternative hypotheses for the following example. Determine if the example is a case of a two-tailed, a left-tailed, or a right-tailed test.
To test if the mean number of hours spent working per week by college students who hold jobs is different from 20 hours.
a.) H0: μ=20
 hours, H1: μ<20
 hours, two-tailed test
b.) H0: μ=20
 hours, ≠
H1: μ≠20
 hours, right-tailed test
c.) H0: μ=20
 hours, H1: μ<20
 hours, left-tailed test
d.) H0: μ=20
 hours, ≠
H1: μ≠20
 hours, two-tailed test
e.) H0: μ=20
 hours, H1: μ>20
 hours, right-tailed test
 
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