The estimated distribution in (in the millions) of the population by age in a certain country for the year 2015 is shown in the pie chart, Make a frequency distribution for the data. Then use the table to estimate the SAMPLE MEAN and the SAMPLE DEVIATION of the data set. use 70 as a midpoint for "65 years and over" under 4 years- 20.4 / 5-14 years- 41.4 / 15-19 years -18.3 / 20-24 years 20.9 / 25-34 years - 46.9 / 35-44 years 32.8 / 45-64 years - 85.1 / 65 years and over -58.9

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

pls mark as brainliest

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

i think the answer is d im not sure

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.