Question

A Genetic experiment with peas resulted in one sample of offspring that consisted of 438 green peas and 160 yellow peas.

A) Construct a 95% confidence interval. Express the percentages in decimal form.

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B) Given that the percentage of offspring yellow peas is not 25%, do the results contradict expectations?

1 No, the confidence interval includes 0.25, so the true percentage could easily equal 25%

2 Yes, the confidence interval does not include 0.25, so the true percentage could not equal 25%

Answer 1

The statistical software output for this problem is:

From above output:

a) 95% confidence interval:

0.232 < p < 0.303

b) No, the confidence interval includes 0.25, so the true percentage could easily equal 25%