Question

BRCA1 is a gene that has been linked to breast cancer. Researches at Stanford University wanted to estimate what proportion of women with a family history of breast cancer show a BRCA1 mutation. In 2014, they used DNA analysis to search for BRCA mutations in 173 women with family histories of breast cancer. Of the 173, they found that 29 had BRCA1 mutations. Calculate the Point Estimate. Give your answer to 3 decimal places.

Answer 1

The point estimate for the proportion of women with BRCA1 mutation is 0.168

Explanation:

The point estimate for the proportion of women with BRCA1 mutation is the number of women with this mutation divided by the size of the sample.

Of the 173, they found that 29 had BRCA1 mutations.

29/173 = 0.168

The point estimate for the proportion of women with BRCA1 mutation is 0.168