The normal distribution curve for the problem is shown below
We need to standardise the value X=405.5 by using the formula


We now need to find the probability of z=0.32 by reading the z-table
Note that z-table would give the reading to the left of z-score, so if your aim is to work out the area to the right of a z-score, then you'd need to do:

from the z-table, the reading

gives 0.6255
hence,

The probability that the mean weight for a sample of 40 trout exceeds 405.5 gram is 0.3475 = 34.75%
Answer:
1. 73.2
2. 90
3. 80
4. 80
Step-by-step explanation:
you will have to divide 3,600 by 50
Answer:
wait.. almost done...
Step-by-step explanation:
Answer:
1/4
Step-by-step explanation
you divide 25 divided by 25 the also divide 100 divided by 25 and u get 1/4
9/5
If you choose two points you can find the equation change in y/change in x (y2-y1)/(x2-x1). Using the first two points this looks like:
(49-22)/(25-10)=27/15=9/5