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Do Homework- Jiren Hailey D a https://www.mathol.co Mozilla Firefox Homework aspx/homeworkld 484854 283&iquestionld-9;&flushed-false;&cld; 5029340&centerwinsyes; MTH160-Summer18 Jiren Hailey 7/26/18 11:45 PM Homework: sec. 7.1 Save Score: O of 1 pt 10 of 16 (11 complete) HW Score: 64 06%, 10.25 of 16 pts EQuestion Help A clinical trial tests a method designed to increase the probability of conceiving a git In the study data to construct a 99% confidence rterval estimate of the percentage of gris born Based aeth. reau, doen the method aeseara 624 babies were bom. and 312 of them were girls. Use the sample ?

Explanation / Answer

Normal approximation to the binomial calculation:

Standard error of the mean = SEM = ?x(N-x)/N3 = 0.020

? = (1-CL)/2 = 0.005

Standard normal deviate for ? = Z? = 2.576

Proportion of positive results = P = x/N = 0.500

Lower bound = P - (Z?*SEM) = 0.448

Upper bound = P + (Z?*SEM) = 0.552

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