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:
a) 49%
b) 49
Step-by-step explanation:
We have that:
The proportion of adult women in a certain geographical region is approximately 49%.
a) What proportion of women in the sample of 100100 would you expect to see?
The same as the region, that is 49%.
b) How many women, on average, would you expect to find in a sample of that size?
There are 100 people. In the region, the proportion of women is 49%.
So, in a sample of 100 people, you would expect to find 49 women.
A isn’t finished but it would be A since the others are wrong
Answer:
-20
Step-by-step explanation:
