I need some help and explanation on how to solve this problem I been having some difficulty solving it

webassign.net/web/Student/Assignment-Responses/su DETAILS BBBASICSTAT8 8.3.023.EP.S. MY NOTES ASK YOU problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. om sample of medical files is used to estimate the proportion p of all people who have blood type B. LA USE SALT If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p will be within a distance of 0.07 from p? Find the critical value for 85% confidence level, Zo.85, and find the specified maximal error of estimate, E. (Round your answers to two decimal places.) Zo.85 = E = Enter a number. Compute the sample size n for estimating the proportion p of all people who have blood type B under these restrictions. (Round your answer up to the nearest whole number.) n = medical files (b) Answer part (a) if you use the preliminary estimate that about 15 out of 90 people have blood type B. (Round your proportions to three decimal places and your sample size up to the nearest whole nu P - 1 - P = n = medical files Submit Answer [-/1 Points] DETAILS BBBASICSTAT8 9.1.004. MY NOTES ASK YOUR TEACHE If we reject the null hypothesis, does this mean that we have proved it to II us.bbcollab.com is sharing your screen. Stop sharing Hide Type here to search 1:21 PM 72.F Sunny 4/14/202 22:44 01:35:28 C 1x CC MacBook Air 80 F10 @ W + 5 6 O W E R T Y O P A S D F G H K