Answer:
CI = 21 ± 0.365
Step-by-step explanation:
The confidence interval is:
CI = x ± SE * CV
where x is the sample mean, SE is the standard error, and CV is the critical value (either t score or z score).
Here, x = 21.
The standard error for a sample mean is:
SE = σ / √n
SE = 3.2 / √510
SE = 0.142
The critical value is looked up in a table or found with a calculator. But first, we must find the alpha level and the critical probability.
α = 1 - 0.99 = 0.01
p* = 1 - (α/2) = 1 - (0.01/2) = 0.995
Using a calculator or a z-score table:
P(x<z) = 0.995
z = 2.576
Therefore:
CI = 21 ± 0.142 × 2.576
CI = 21 ± 0.365
Round as needed.
Answer:
F(n) =-3n+24
Step-by-step explanation:
D) c=3p+2 3 caterpillars per plant and 2 on ground
Answer:
A) Fill the blanks, Fail, 0.15, Success, 244, 0.61
B) 240 times
Step by-step explanation:
A) Void , 96, 0.24
Fail, 60, it should be 0.15 because 60/400
Success, 400 - 96- 60 or 244 and the relative frequency is 0.61.
B)
There is a total of 1000. If the relative frequency is 0.24, multiply 0.24 by 1000 to get the amount of times YOU would expect to be VOID.
Or in other words , 240 times
By proving it add all up
0.24 x 1000 + 0.76 x 1000 = 1000
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