Please help ASAP I have tried so many times and still keep getting it incorrect

Question

Please help ASAP I have tried so many times and still keep getting it incorrect

In 2006, Merck released a vaccine named Gardasil for HPV - the most common cause of cervical cancer among young women. The company conducted four placebo controlled double blind clinical studies of women aged 16 to 26. The results were

(a): Give a 98% confidence interval for the differences in the proportion of young women who develop cervical cancer with and without the vaccine.

Lower confidence level:

Upper confidence level:

(b): Give a 98% confidence interval for the differences in the proportion of young women who develop genital warts with and without the vaccine.

Lower confidence level:

Upper confidence level:

Treatment n Cervical cancer cases n Genital wart cases Gardasil 8487 0 7897 1 Placebo 8460 32 7899 91

Explanation / Answer

a. with vaccine

lower bound : 0

upper bound : 0

without vaccine

lower bound : 0.002

upper bound : 0.005

b. with vaccine :

lower bound : 0.000

upper bound : 0.001

without vaccine :

lower bound : 0.009

upper bound : 0.015

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