A study is done to determine if students in the California state university system (sample 1) take longer to graduate, on average, than students enrolled in private universities (sample 2). Suppose that from years of research, it is known that the population standard deviations are 1.5 years and 0.9 years, respectively. One hundred students from each the California state university system and private universities are surveyed. The California state university system students took on average 4.8 years while the private university students took on average 4.4 years. Conduct a hypothesis test, using =0.10.
I need to z score and p value!

answer is 33

step-by-step explanation:

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step-by-step explanation:

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system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.