Question

The table shows a probability distribution for predicting how many cars will arrive at a car wash. each event represents how many cars arrive during a ten-minute interval. Use the six randomly generated numbers 55, 86, 2, 12, 72, and 48 to predict how many cars will arrive over a one hour period.

Answer 1

The ANSWER IS 10 CARS !!!!!!!

Explanation:

Each event happened after 10 min.

The question wants to know how many cars came in 1h or 60 min.

Now looking at the question there are a total of 6 events.

6 x 10min = 60 or 1h

The numbers given ( 55, 86, 2, 12, 72, and 48) have values according to the chart.

There is extra information given purposely to confuse you.

The main information is

1-->18= 0 cars

19-->41= 1 car

41-->70= 2 cars

71-->87= 3 cars

88-->100 = 4 cars

Now that You understand the main information, lets look at these numbers and in which group they go into. ( 55, 86, 2, 12, 72, and 48)

I recommend rearranging these numbers in order from LEAST to GREATEST to avoid making a mistake.

2, 12, 48, 55, 72, 86

Now that they are in order lets look at these groups again. And see where these numbers fall in place.

1-->18= 0 cars --< 2, 12

19-->41= 1 car --< NONE

41-->70= 2 cars --<48, 55

71-->87= 3 cars --< 72, 86

88-->100 = 4 cars --< NONE

Now that we have all the values in place lets solve.

1-->18= 0 cars --< 2, 12------------( 0 cars x 2 = 0)

19-->41= 1 car --< NONE----------(1 car x 0 = 0)

41-->70= 2 cars --<48, 55-------(2 cars x 2= 4)

71-->87= 3 cars --< 72, 86-------(3 cars x 2 = 6)

88-->100 = 4 cars --< NONE----(4 cars x 0 = 0 )

Now add all values.

4+6= 10

I got rid of the zeros , but if they had values they would also be added

So in the end the ANSWER IS:

10 CARS

I just got 100% on this test !!!!

!!!! GRADPOINT !!!!

plz 5 star it took alot of time

Answer 2

Option (b): 10 cars

Explanation:

We have the following numbers:

55, 86, 2, 12, 72 and 48

First we order them from least to greatest according to the intervals shown in the fourth column of the table.

So, we have

2, 12

48, 55

72, 86

The first two numbers (2, 12) enter the first interval (1-18) corresponding to the arrival of 0 cars

The third and fourth number (48, 55) enters the third interval (41-70) that corresponds to the arrival of 2 cars.

The fifth and sixth numbers (72, 86) enter the fourth interval (71-87) that corresponds to 3 cars.

So we have that, according to the numbers given, the number of cars arriving in an hour is:

0 + 0 + 2+ 2 + 3 + 3 = 10 cars

The correct answer is the option (b) 10 cars