Suppose student test scores for a nationwide standardized test have an unknown distribution with a mean of 259 and a standard deviation of 33 points. A sample of size n=38 is randomly taken from the population and the mean is taken. What is the probability that the resulting mean is more than 264.3 points?

answer: i don't understand it

step-by-step explanation: sorry

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step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

step-by-step explanation: