Answer:
The critical value of F for this situation is 2.975.
Step-by-step explanation:
A test is being performed to determine if a particular drug, smartozine, affects maze learning in rats.
The groups are divided as follows:
- Three groups of 8 rats each are injected with one of three different doses of smartozine.
- The fourth group of 6 rats is injected with a saline solution as a control.
So, there were in total <em>k</em> = 4 groups with <em>n</em> = 30 rats.
The significance level of the test is, <em>α</em> = 0.05.
Compute the critical value of <em>F</em> as follows:

*Use the <em>F</em>-table.
Thus, the critical value of F for this situation is 2.975.
We have

And we want

Another way to read it is

It should be clear that the solution is 
Answer:
18 , 18.901036
Step-by-step explanation:
3.052 * 6.193
estimate : 3 * 6 = 18
actual answer : 3.052 * 6.193 = 18.901036
We draw 10 white tiles.
Then we shade in 9 of them.
We count the remaining tiles to get the answer, which is 1.
Divide 309 by 3. You should get 103 (hamburgers). if you multiply that by 2 you will get 206 (cheeseburgers). Add the two together you get the total which was 309 originally.
103 hamburgers and 206 cheeseburgers.