at 3 weeks old, Jaylynn's tortoise weighed 4 pounds. when the tortoise was 7 weeks old, he weighed 7 pounds. if the tortoise continues to grow at this rat, how much will it weigh when it is 12 weeks old.?

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.