Answer:
ans 113.04
Step-by-step explanation:
we know that,
d=12
r=6
pie=3.14
A=Pie r^2
A=3.14*6^2
A=113.04
1-wv
2-vu
3-uw
Are the answers
Answer: No, the data does not support the claim at 1% level as the mean time is no longer than 4.5 years.
Step-by-step explanation:
Since we have given that
n the California state university system take 4.5 years, on average, to finish their undergraduate degrees.
So, the hypothesis would be

Mean = 5.1
Standard deviation = 1.2
n = 49
So, test statistic value would be

At 1% level of significance, critical value is 2.58
Since 2.58>-3.53.
So, we will accept the null hypothesis.
Hence, No, the data does not support the claim at 1% level as the mean time is no longer than 4.5 years.