HELP ! if the median height of 12 students is 5’6 how many students must be exactly 5’6
A-0
B-2
C-6
D-12

Question

HELP ! if the median height of 12 students is 5’6 how many students must be exactly 5’6
A-0
B-2
C-6
D-12

amistre64 · Answer

does the middle of an even set have to be a part of the set?

amistre64 · Answer

does an average of 2 numbers, have to be equal to either number?

anonymous · Answer

no?

amistre64 · Answer

thats correct

amistre64 · Answer

the median of an even set of number will be the average of the 2 numbers in the middle

anonymous · Answer

I am having trouble with how I figure out the answer. I think it would be 0, because the it is the median,

amistre64 · Answer

the answer is zero.  none of them have to be exactly 5'6

amistre64 · Answer

the average of 5'5 and 5'7, with any luck ... is 5'6, which is not a member of the set to start with

anonymous · Answer

Oh okay, thank you for your help! Could you help me with one more?

amistre64 · Answer

maybe .. my memory can be rather sporatic

anonymous · Answer

You are keeping track of your average daily caloric intake in order to begin reducing the number of unnecessary calories in your daily diet. Your average for the past month (30 days) 2as 1926 calories a day. You just returned from a 5 day vacation and you would like to recalculate your average. On vacation, you consumed on average of 2500 calories a day. What is your new average?
 A. 574
 B. 1944
 C. 2008
 D. 2213

amistre64 · Answer

how do we caluclate an average?

anonymous · Answer

You add up all of the numbers, and then divide it by how many numbers there are

amistre64 · Answer

good, so:$$\frac{A}{30}=1926$$
$$A=1926(30)$$
adding in the next 5 days ....$$\frac{A+5(2500)}{35}=New_{avg}$$

anonymous · Answer

So would I add 30+5(2500)/35?

amistre64 · Answer

not quite.

the sum of the first 30 days is:  1926(30)

the sum of the next 5 days is:  5(2500)

add them up for the total sum of 35 days

anonymous · Answer

so I would do 1926x30? and then 5(2500)

amistre64 · Answer

yes

anonymous · Answer

I get and  57,780
12,500

amistre64 · Answer

i get:  1926(30) + 5(2500) = 70280

70250/35 is one of the options

anonymous · Answer

Would it be c?

amistre64 · Answer

i get C.  with any luck its also correct :)

anonymous · Answer

Awesome! thank you for your help

amistre64 · Answer

youre welcome, and good luck :)

anonymous · Answer

Thank you!