#4 BRACA1 Mutat X = 27 n = 169 a) Prevalence rate, P: b) LCL = UCL = C) ExplanationProblem #4: BRACA1 Mutations (One Sample Proportion - Confidence Interval) Of 169 women having breast cancer and a familial risk factor, 27 women had an inherited BRACA1 mutation. Estimate the prevalence of BRACA1 mutation in women with familial breast cancer. Include a 95% Confidence Interval for the prevalence (use Z, = 1.96). If a separate group of women with breast cancer had a BRACA1 mutation of Po = 0.195. Explain if this rate is in line with what would be expected or is this rate significantly different? a.) What is the estimated prevalence (P)? b.) What is the LCL and UCL for a 95% Confidence Interval? c.) What is your Explanation for a rate of 0.195