Write the median of the following data 3,5,2,9,7,11

The median is 6.

Step-by-step explanation:

Notice that there are an equal number (2) of values to the left and to the right of these two middles. Step 3: We are in the case that there are an even number of values, so the median is this average of the two middle numbers. Add these two middle numbers and divide by 2.

2, 3, 5, 7, 9, 11

( 5 + 7) /2

12/2 = 6

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21

-7 + ? = 21

-7 + 28 = 21

hope it