Answer:
Option A.
Step-by-step explanation:
In an experiment a mouse took the mean time to find its way through a maze = 18 seconds.
So the mean time μ = 18
So null hypothesis says,
H₀ : μ = 18
Then a researcher thought that the mice can complete the maze faster than the time taken earlier.
So he thinks mean time taken by 10 mice will be less than 18 seconds.
Or μ < 18
Alternate hypothesis says will be
Hₐ : μ < 18
Therefore, null hypothesis and alternate hypothesis will be
H₀ : μ = 18
Hₐ : μ < 18
Option A. will be the answer.
Answer:
Answer is D on edge
Step-by-step explanation:
Answer:
1.53
Step-by-step explanation:
because 21 minus 19.47= 1.53
Answer:
There are four terms of the expression 
.
Step-by-step explanation:
The given expression is .
The first term of this expression is 
.
The second term of this expression is 
.
The third term of the expression is 
.
The fourth term of the expression is 
.
Therefore, there are four terms in the given expression.
Answer:
-77
Step-by-step explanation:
Multiply 11 x 7 first which gives you 77. And since the Negative sign is before 11, which means the product negative always, it will be -77!
hope this helped!
