1. Compete the table. Level of Significance, a (in decimal or %) Confidence Level (in %) 1. 1% 2. 0.05 3. 98% 4. 0.01 5. 80%

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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Please answer the following:

I. Compete the table.
Level of Significance, a (in
decimal or %)
Confidence Level (in %)
1.
1%
2.
0.05
3.
98%
4.
0.01
5.
80%
II. Compute the following.
1. A random sample is drawn from a population of known standard deviation 11.3. Construct a 90% confidence
interval for the population mean based on the information given:
a. n = 36
X= 105.2
b. n = 100 x= 105.2
2. A random sample is drawn from a population of unknown standard deviation. Construct a 99% confidence
interval for the population mean based on the information given:
a. n = 49
X= 17.1
O = 2.1
b. n = 169 X= 17.1
O = 2.1
3. A random sample of size 144 is drawn from a population whose distribution, mean, and standard deviation
are all unknown. The summary statistics are x = 58.2 and o = 2.6. Construct a 90% confidence interval for the
population mean µ.
Transcribed Image Text:I. Compete the table. Level of Significance, a (in decimal or %) Confidence Level (in %) 1. 1% 2. 0.05 3. 98% 4. 0.01 5. 80% II. Compute the following. 1. A random sample is drawn from a population of known standard deviation 11.3. Construct a 90% confidence interval for the population mean based on the information given: a. n = 36 X= 105.2 b. n = 100 x= 105.2 2. A random sample is drawn from a population of unknown standard deviation. Construct a 99% confidence interval for the population mean based on the information given: a. n = 49 X= 17.1 O = 2.1 b. n = 169 X= 17.1 O = 2.1 3. A random sample of size 144 is drawn from a population whose distribution, mean, and standard deviation are all unknown. The summary statistics are x = 58.2 and o = 2.6. Construct a 90% confidence interval for the population mean µ.
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