The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts​ (a) through​ (c) below.   Assume the population is normally distributed. 1429 1225 990   700 723 837   726

MATLAB: An Introduction with Applications
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The state test scores for
12
randomly selected high school seniors are shown on the right. Complete parts​ (a) through​ (c) below.
 
Assume the population is normally distributed.
1429
1225
990
 
700
723
837
 
726
740
544
 
629
1443
943
 
 
 
 

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Part 1
​(a) Find the sample mean.
 
x=enter your response here
​(Round to one decimal place as​ needed.)
Part 2
​(b) Find the sample standard deviation.
 
s=enter your response here
​(Round to one decimal place as​ needed.)
Part 3
​(c) Construct a
99​%
confidence interval for the population mean
μ.
 
A
99​%
confidence interval for the population mean is
​(enter your response here​,enter your response here​).
​(Round to one decimal place as​ needed.)
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