Here is a number machine. Input
x 6
7
Output
a) Work out the output when the input is 9
Here is a different number machine.
Input
- 5
Output
When the input is 9, the output is
b) Complete the number machine.

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.