The patient recovery time from a particular surgical procedure is normally distributed with a mean of 6.5 days and a standard deviation of 1.7 days. What is the z-score for a patient who takes 10 days to recover? (Round your answer to two decimal places.)

answer: 298143

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

the aswere is the one with all 8's and the second one is with the 10,8 and 6

step-by-step explanation: