Answer:
-4.42
Step-by-step explanation:
Given the following :
Population mean (pm) = 8 hours
Sample mean (sm) = 6.9 hours
Number of observations (n) = 101 students
Sample standard deviation (sd) = 2.5
Using the t-statistic formula :
[(sm - pm) / (sd/√n)]
Hence,
[(6.9 - 8) / (2.5/√101)]
[(-1.1) / (2.5/10.05)]
-1.1 / 0.2487562
= −4.422
The test statistic = - 4.42 to the nearest hundredth.
Step-by-step explanation:
b = 1........... .. ...... .
Answer:3t^2)^2. (3t2)2 ( 3 t 2 ) 2. Apply the product rule to 3t2 3 t 2 . 32(t2)2 3 2 ( t 2 ) 2. Raise 3 3 to the power of 2 2 . 9(t2)2 9 ( t 2 ) 2. Multiply the exponents in ...
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Answer: 
Step-by-step explanation:
For this exercise it is necessary to remember the following:
1) The Distributive Property states the following:
2) The multiplication of signs:
Knowing this, and having the following expression given in the exercise:
You can apply the Distributive property multiplying 
and 
, which are inside the parentheses, by 
.
So, you get the following result:
