Question Suppose a chef claims that her meatball weight is not equal to 4 ounces, on average. Several of her customers do not
believe her, so the chef decides to do a hypothesis test, at a 10% significance level, to persuade them. She cooks 13
meatballs. The mean weight of the sample meatballs is 3.9 ounces. The chef knows from experience that the standard
deviation for her meatball weight is 0.6 ounces.
.
Họ: A = 4; H:144
• a=0.1 (significance level)
What is the test statistic (Z-score) of this one-mean hypothesis test, rounded to two decimal places?

answer: h

step-by-step explanation:

i agree because i see the other persons thinking is clear

step-by-step explanation:

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.