Sample body temperature of cats 95 confidence n 30 x 1029

Sample body temperature of cats: 95% confidence, n = 30, x = 102.9 degree F, s =.62 degree F.

Solution

Note that              
Margin of Error E = z(alpha/2) * s / sqrt(n)              
Lower Bound = X - z(alpha/2) * s / sqrt(n)              
Upper Bound = X + z(alpha/2) * s / sqrt(n)              
              
where              
alpha/2 = (1 - confidence level)/2 =    0.025          
X = sample mean =    102.9          
z(alpha/2) = critical z for the confidence interval =    1.959963985          
s = sample standard deviation =    0.62          
n = sample size =    30          
              
Thus,              
Margin of Error E =    0.221860074          
Lower bound =    102.6781399          
Upper bound =    103.1218601          
              
Thus, the confidence interval is              
              
(   102.6781399   ,   103.1218601   ) [ANSWER]

 Sample body temperature of cats: 95% confidence, n = 30, x = 102.9 degree F, s =.62 degree F.SolutionNote that Margin of Error E = z(alpha/2) * s / sqrt(n) Low

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