To find the standard error, divide the standard deviation by the square root of the sample size
standard deviation = 7.5
sample size = 25......sqrt 25 = 5
standard error = 7.5 / 5 = 1.5 <==
Answer:
2.5
Step-by-step explanation:
Put the values in place of the corresponding variables and do the arithmetic:
ab - 0.5b = (1)(5) -0.5(5) = 5 - 2.5 = 2.5
The mean is the best measure to summarise the scores.
BC is the length of AD because they are parallel. Have a nice day
Hey there!
(3x)^2 - 2x^2
= (3(-2))^2 - 2(-2)^2
= -6^2 - 2(4)
= 36 - 8
= 28
Therefore, your answer is: 28
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
