A state agency requires a minimum of 5 parts per million (ppm) of dissolved oxygen in order for the oxygen content to be sufficient to support aquatic life. Six water specimens taken from a river at a specific location during the low-water season (July) gave readings of4.8,5.2,5.0,4.9,5.1, and4.6ppmof dissolved oxygen. Do the data provide sufficient evidence to indicate that the dissolved oxygen content is less than5 ppm?Test using= 0.05.

State the null and alternative hypotheses.

1. H₀:5 versusH_a:= 5
2. H₀:< 5 versusH_a:> 5
3. H₀:= 5 versusH_a:5
4. H₀:= 5 versusH_a:< 5
5. H₀:< 5 versusH_a:= 5

State the test statistic. (Round your answer to three decimal places.)

t=___?___

State the rejection region. (If the test is one-tailed, enter NONE for the unused region. Round your answers to three decimal places.)

t > ___?___

t <___?___

State the conclusion.

1. H₀is not rejected. There is insufficient evidence to conclude that the dissolved oxygen content is less than5 ppm.
2. H₀is rejected. There is insufficient evidence to conclude that the dissolved oxygen content is less than5 ppm.
3. H₀is not rejected. There is sufficient evidence to conclude that the dissolved oxygen content is less than5 ppm.
4. H₀is rejected. There is sufficient evidence to conclude that the dissolved oxygen content is less than 5 ppm.