Answer:
a) Mean 0.11 and standard deviation 0.0044.
b) Mean 0.11 and standard deviation 0.0099.
c) Mean 0.11 and standard deviation 0.0198
Step-by-step explanation:
Central Limit Theorem:
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean and standard deviation
In this question:
a. For a random sample of size n equals 5000.
Mean:
Standard deviation:
Mean 0.11 and standard deviation 0.0044.
b. For a random sample of size n equals 1000.
Mean:
Standard deviation:
Mean 0.11 and standard deviation 0.0099.
c. For a random sample of size n equals 250.
Mean:
Standard deviation:
Mean 0.11 and standard deviation 0.0198
56.30
With a calculator, press second or shift and then tan to find the degrees.
Answer:
7x -14 = jl
Step-by-step explanation:
Assuming a straight line
jm+ ml = jl
5x-8 + 2x-6 = jl
Combine like terms
7x -14 = jl
Solution
Step 1
Write an expression for the sales tax she paid and the percentage off
Step 2
Find her total bill after substitution
Her total bill thereore = 42 +4.95 =$46.95