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Please write a 10 pages statistical report how to study the length of sharks. You and use internet or other resources to obt

need letters (i), (j), (k), and (l), please and thank you

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Answer #1

Summary for Length of sharks Anderson-Darling Normality Test A-Squared P-Value 0.42 0.310 15.741 StDev Variance 7.052 Skewnes

(i) It is bell-shaped distribution. Center (mean)=15.741, Median=15.800, hence Mean is almost equal to median.

Lower Whisker=1st Quartile-1.5(3rd Quartile-1st Quartile)=13.6-1.5*(17.6-13.6)=7.6

Upper Whisker=3rd quartile+1.5(3rd Quartile-1st Quartile)=17.6+1.5*(17.6-13.6)=23.6

We know any value lies outside (7.6,23.6) is an outlier. Since here maximum and minimum values lie inside the interval so there is no outlier. The distribution is reasonably normal since p-value of AD test>0.05.

(k) 95% C.I. for mean length=(14.994, 16.488)

Since 20 is larger than upper limit of 95% C.I. for mean length so there is significant evidence at 5% level to reject the claim that great white sharks average 20 feet in length.

(l) We need point estimate of \mu i.e. sample mean=15.741.

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