Calculate the standard error from the following descriptive statistics:
s1 = 24, s2 = 21, n1 = 36, n2 = 49

s1 = 15.40, s2 = 14.80, n1 = 20, n2 = 23

s1 = 12, s2 = 10, n1 = 25, n2 = 25

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"