There are 600 students at Hilda's school. She wants to estimate the number of students who ride their bikes to school. Which is the best strategy for Hilda to use? AO Survey 3 students, find out how many ride their bikes to school, then add 597 to that number. B. O Survey 30 students, find out how many ride their bikes to school, then multiply that number by 20. c. Survey 30 students, find out how many ride their bikes to school, then add 570 to that number. D. Survey 3 students, find out how many ride their bikes to school, then multiply that number by 200.​

.

Step-by-step explanation:

x=6 and x=3

beep beep imma sheep

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