The height in cm was determined for three students enrolled in ap biology. the data is as follows: 161 cm, 170cm, 160cm calculate the standard error. * a. 9.75 b. 5.5 c. 95 d. 3.2 e. there is not enough information to do the calculation

set of data [161,170,160]

step 1

Find the mean

 [161+170+160]/3=163.67 cm

step 2

 for each number: subtract the Mean and square the result

(161-163.67)²----->7.1289

(170-163.67)²----> 40.0689

(160-163.67)²----> 13.4689

step 3

 work out the mean of those squared differences

[7.1289+40.0689+13.4689]/(3-1)=30.33

step 4

Take the square root of that

S=√30.33------> 5.51 cm

SE=S/√n--------> 5.51/√3------> 3.18-------> 3.2 cm

the answer is

3.2 cm    

see the attached formulas

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !