In a recent year 21.6% of all registered doctors were female if there were 54,100 female registered doctors that year what was the total number of registered doctors

the total number of registered doctors is 250463

Step-by-step explanation:

Let x represent the total number of registered doctors

In a recent year 21.6% of all registered doctors were female. It means that the number of registered female doctors would be

21.6 /100 × x = 0.216 × x = 0.216x

if there were 54,100 female registered doctors that year, it means that

0.216x = 54100

x = 54100/0.216 = 250463

answer: given that the roller coaster can accommodate 1600 riders per hour, thus the roller coaster can accomodate 1600 / 60 = 26.67 riders per minute.

given that there are 345 people in the line, the number of minutes it will take for the 345 persons to get into the roller coaster is given by 345 / 26.67 = 12.94 minutes.

therefore, it will take you 12.94 minutes to get to the front of the line.

step-by-step explanation:

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560