Answer:
a. (0.656, 1.064)
Step-by-step explanation:
The sample of cereal is :
n = 32, Standard deviation = 0.81
The confidence interval is 95%
degrees of freedom = df = 31 (n - 1)
[tex]\alpha[/tex] = 95%
1 - 0.95 = 0.05
1 - [tex]\frac{ \alpha }{2}[/tex]
1 - 0.025 = 0.975
Using chi square distribution we get,
0.656, 1.064
