There are 250 freshman at Central High School. You survey 50 randomly selected freshman and find that 38 plan to go to the school party on Friday. How many freshman are likely to be at the party?

190 freshman will probably go to the party

Step-by-step explanation:

first we have to get the probability of a person going

for this we will see those who said they will go on those who asked them

38/50 = 0.76 = 76%

Now we are going to multiply the 0.76 by the 250 people, and we will obtain the probable number of freshman that come to the party

250*0.76 = 190

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.