Answer:
B is True
A, C. D are false
Step-by-step explanation:
Given :
Sample size, n = 120
Mean diameter, m = 10
Standard deviation, s = 0.24
Confidence level, Zcritical ; Z0.05/2 = Z0.025 = 1.96
The confidence interval represents how the true mean value compares to a set of values around the mean computed from a set of sample drawn from the population.
The population here is N = 10000
To obtain
Confidence interval (C. I) :
Mean ± margin of error
Margin of Error = Zcritical * s/sqrt(n)
Margin of Error = 1.96 * 0.24/sqrt(120)
Confidence interval for the 10,000 ball bearing :
10 ± 1.96 * (0.24) / sqrt(120)
Hence. The confidence interval defined as :
10 ± 1.96 * (0.24) / sqrt(120) is the 95% confidence interval for the mean diameter of the 10,000 bearings in the box.
Answer:
C And D
Step-by-step explanation:
HAVE A GREAT DAY!
D. there is no numbers to work with so you just have to use a variable
Answer:
3/5
Step-by-step explanation:
1/5r + 8/15
~Substitute
1/5(1/3) + 8/15
~Simplify
1/15 + 8/15
~Add
9/15
~Simplify
3/5
Best of Luck!
7 and 9/10
Working;
10 goes into 70 7 times. The remainder is 9.
