Answer: -1.5
Step-by-step explanation:
When population standard deviation is known, then the formula to find the z-test statistic for population mean is given by :-
, where n= Sample size.
= Population mean
= Sample mean
= Population standard deviation.
As per given , we have 
(average infants contracted typhoid each month)
n= 4 (No. of months)
Then , the value of the appropriate test statistic will be :
Hence, the value of the test statistic = -1.5
Answer:
y = 6x - 5
Step-by-step explanation:
I don't really understand the question so I just put it into slope intercept form. I hope this helps!
As far as I can see you have gotten the majority of them right.
The only one I see, is the last number on the 4th row from the bottom.
11
x11
------------
121 not 132.
I hope this Helps! :)
Answer:
B
Step-by-step explanation:
cause it's got a 5.....5 x 5 = 25.......make sense
Answer:
She changed the symbols in the first two problems because they were divided by a negative number whereas she shouldn't have changed the symbol in the last problem as it was not divided by a negative number and so the sign remains the same.
