A dentist polls his patients and finds that 83 percent brush their teeth at least twice a day, 47 percent floss daily, and
19 percent brush at least twice a day and floss daily. What is the probability that a patient flosses daily, given that he
or she brushes at least twice a day? Round to the nearest percent.
16%
23%
40%
57%

Can someone me with my hwplz(only the circled ones)

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true

Can someone me with this? i’m not sure what to put for my equations.