The antibody production of 12 male red-winged blackbirds before and after receiving testosterone implants was compared. The unit
1 answer:
Answer:
I you want to ensure that you could detect a mean change of 0.03 units with a probability of 0.8, then you need at least 40 individuals for the sample.
Step-by-step explanation:
Minimum required sample size can be found using the formula
N≥ where
- N is the sample size
- z is the corresponding z-score for (0.8 probability) 80% confidence level (1.28)
- s is the standard deviation (0.148)
- ME (margin of error) is the margin for detecting mean change (0.03)
Using the numbers we get:
N≥ ≈ 40
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y = mx+b
m is the slope of the equation. slope is rise/ run meaning that if a slope is 2, you can also say 2/1. this means you go up 2 squares and to the right 1 point. if the slope is negative, it looks like a downhill and the line falls left to right. if the slope is positive, it looks like uphill and the line falls right to left.
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i attached a picture of the graphed lines