please help me with those questions i need the answer as soon as possible..

1. The bore diameters of eight randomly selected bearings are shown here (in mm): 50.001, 50.002, 49.998, 50.006, 50.005, 49.996, 50.003, 50.004. a. Calculate the sample average. b. Calculate the sample standard deviation. 2. The time to failure in hours of an electronic component subjected to an accelerated life test is shown in the following table. To accelerate the failure test, the units were tested at an elevated temperature (read down, then across): Electronic Component Failure Time 127 124 121 118 125 123 136 131 131 120 140 125 124 119 137 133 129 128 125 141 121 133 124 125 142 137 128 140 151 124 129 131 160 142 130 129 125 123 122 126 a. Calculate the sample average and standard deviation. b. Construct a histogram. c. Construct a stem-and-leaf plot. d. Find the sample median and the lower and upper quartiles. 3. Using the data from Question 2, construct and interpret a normal probability plot of the electronic component failure times. 4. Using the data from Question 1, construct a box plot for the data. 5. A mechatronic assembly is subjected to a final functional test. Suppose that defects occur at random in these assemblies, and that defects occur according to a Poisson distribution with parameter 1 = 0.02. a. What is the probability that an assembly will have exactly one defect? b. What is the probability that an assembly with have one or more defects? c. Suppose that you improve the process so that the occurrence rate of defects is cut in half to l = 0.01. What effect does this have on the probability that an assembly will have one or more defects