Suppose that a population parameter is 0.6, and many samples are taken from the population. if the size of each sample is 80, which of the following will most likely be the standard deviation of the sample proportions? a. 0.095 b. 0.055 c. 0.032 d. 0.072

The answer is Letter B - 0.055.
Given: p - 0.6; n - 80Required: standard deviation of the sample proportionSolution: To get the standard deviation of the sample proportion, we will use this formula - std = √p (1 - p) / n Replace the variables with the given values, then simplify.   std = √0.6 (1 - 0.6) / 80   std = √0.24 / 80   std = √0.003   std = 0.055

40%=2/550=1/230=3/1056=14/25

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!