A population of torula yeast with ethanol as its energy source grows faster than

Question

A population of torula yeast with ethanol as its energy source grows faster than with glucose as its energy source. You wonder if this is because yeast cells are undergoing mitosis at a smaller size on ethanol (so it takes less time for each cell to get big enough to divide when on ethanol, thus speeding population growth on ethanol). To difference in average cell size under this conditions, you take two samples: a. State the null and alternative hypotheses and choose an alpha-level. b. Calculate the appropriate t-value and bracket the p-value. c. Draw your conclusion based on parts a and b.

Explanation / Answer

Below are the null and alternate hypothesis

p-value for t=2.1951 with df = 45 is 0.033356

For this test select alpha = 0.05 i.e. significance level.

As p-value is less than the significance level of 0.05, we reject the null hypothesis. This means there is significant difference in the size of the cell.

Null Hypothesis Alternate Hypothesis H0: 1 = 2 Ha: 1 2

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