Weight of a cat For computing the amount of radioactive iodine-131 to administer

Question

Weight of a cat For computing the amount of radioactive iodine-131 to administer, a veterinary student is concerned with obtaining highly accurate readings of cat weight. If the scale manufacturer claims a standard deviation of 0.1 pounds, how many times should she repeatedly weigh the cat so the sampling distribution of mean weight has a standard deviation of 0.01 pounds? Which engineer is more likely to come the closest to the true length of the tower rod he or she is weighing? O a.100 times O b.101 times O c. 10 times

Explanation / Answer

as we know that std error of mean =std deviaiton/(n)1/2

0.01 =0.1/(n)1/2

n=100

option A is correct

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