A researcher compares the effectiveness of two different instructional methods for teaching pharmacology. A sample of 49 students using Method 1 produces a testing average of 72.8. A sample of 31 students using Method 2 produces a testing average of 72.3. Assume that the population standard deviation for Method 1 is 6.29, while the population standard deviation for Method 2 is 15.7. Determine the 90% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2.

43

step-by-step explanation:

damm bro the struggle

step-by-step explanation:

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

i would be 2,000 just get the square root of 50 which is 2500 and the divid 4/5 and last thing multiply the answer you get for that by the square root of 50

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