Length of ears of corn a particular seed will produce 99 con

Length of ears of corn a particular seed will produce 99% confidence, n 32, x = 12.5 in., s = 0.70 in.

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 =    0.005          
X = sample mean =    12.5          
z(alpha/2) = critical z for the confidence interval =    2.575829304          
s = sample standard deviation =    0.7          
n = sample size =    32          
              
Thus,              
Margin of Error E =    0.318742614          
Lower bound =    12.18125739          
Upper bound =    12.81874261          
              
Thus, the confidence interval is              
              
(   12.18125739   ,   12.81874261   ) [ANSWER]

 Length of ears of corn a particular seed will produce 99% confidence, n 32, x = 12.5 in., s = 0.70 in.SolutionNote that Margin of Error E = z(alpha/2) * s / sq

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