Answer:
Im to lazy to calculate the entire answer but its basically the formula is a*b/2
Step-by-step explanation:
Answer:

Step-by-step explanation:
We are given the following in the question:
Sample size, n = 67
Variance = 3.85
We have to find 80% confidence interval for the population variance of the weights.
Degree of freedom = 67 - 1 = 66
Level of significance = 0.2
Chi square critical value for lower tail =

Chi square critical value for upper tail =

80% confidence interval:

Putting values, we get,

Thus, (3.13,4.91) is the required 80% confidence interval for the population variance of the weights.
Answer: 11 square root 57
Step-by-step explanation:
Answer:
I'm pretty sure the answer is m = 16h
Hope this helps!
Please mark as brainliest!
t=100
p=3000
t 1/2 = 20
Try inserting the numbers in the half-life formula.