Answer:
3.06
Step-by-step explanation:
The correct answer is - 3.06
Reason -
For sample A :
mean,
= 8.05
Standard deviation,
= 1.36
Size,
= 50
For sample B :
mean,
= 7.26
Standard deviation,
= 1.06
Size,
= 38
Now,
-
= 8.05 - 7.26 = 0.79
Standard deviation error, SE = √(
²/
+
²/
) = 0.2580
Now,
Z-statistic = (
-
)/ SE
= 0.79/0.2580
= 3.06
⇒Z-statistic = 3.06
Answer:
18
Step-by-step explanation:
Just multiply them. 6 x 3 would be the formula in this situation. The other formula would be bh or bxh.
8 times 3 then 8 times 5 then add the two then write the rest of the expression
Answer:
{12,15}
Step-by-step explanation:
Given the function f(x) = x+5, if the range of the function is {7,9}, the domain of the function is derived by simply finding the value of the function at each end point.
At endpoint x = 7,
f(7) = 7+5
f(7) = 12
At endpoint x = 9
f(9) = 9+5
f(9) = 14.
The function domain is therefore at {12,14}
your profile says you're 22 but I find that painfully challenging to believe. She knits 5 scarves in 2 hours. Divide 10 by 2, you get 5. 5x5 is 25. It's C. You shouldn't need help. This is sad.