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A) A certain type of seed has always grown to a mean height of 8.5 inches. A researcher wishes to find our whether some new enriched conditions would improve the mean height and plans to conduct a test. A type 1 error in the situation would mean:

Options:

-the mean height of the plants is 8.5 inches and the researcher concludes the mean height 8.5 inches

-the mean height of the plans has improved and the researcher concludes the mean improved

-the researcher does not conclude the mean height of the plants has improved when the mean height has actually improved

- the researcher concludes the mean height of plans has improved when the mean height is actually 8.5 inches

B) A researcher would like to determine if dye levels are the same for farm raised chicken as they are for wild caught chicken. They randomly select a sample of both types of chicken and measure the dye levels in parts per million.

What type of hypothesis test would you recommend they perform for this situation?

1. Hypothesis test for 1 mean
2. Hypothesis test for 2 means
3. Hypothesis test for 1 proportion
4. Hypothesis test for 2 proportions