Six measurements are taken of the thickness of a piece of 18-gauge sheet metal. The measurements (in mm) are: 1.316, 1.308, 1.321, 1.303, 1.311, and1.310.
a. Make a dotplot of the six values.
b. Should the t curve be used to find a 99% confidence interval for the thickness? If so, find the confidence interval. If not, explain why not.
c. Six independent measurements are taken of the thickness of another piece of sheet metal. The measurements this time are: 1.317, 1.318, 1.301, 1.307, 1.374, 1.323. Make a dotplot of these values.
d. Should the t curve be used to find a 95% confidence interval for the thickness of this metal? If so, find the confidence interval. If not, explain why not.
(a) 
(b) Yes, there are no outliers.
The confidence interval is 
(c)
(d) No, the data set contains an outlier.
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(a) What is the diver’s total energy in joules at the following heights: 100 ft, 50 ft, surface of the water? (b) What is the diver’s velocity in mph at the first contact with the water?
Rand() to form other random numbers and outcomes. The following work sheet shows Y = RAND() in A2 expressed in 3 decimal-point precision. Using the value in A2, generate the following random numbers.
a. Y1 in B2 that is uniformly distributed over [-0.5, 0.5) in 3-digit precision.
b. Y2 in C2 that is uniformly distributed over [-2,3)
c. Y3 in D2 simulates a fair coin flip experiment with outcome “H” for head and “T” for tail.
d. Y4 in E2 simulates a fair die toss experiment with outcome 1 to 6.
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A. 243.8 B. 245.4 C. 246.5 D. 247.8
Which of these statements about braking is true?
a) The heavier a vehicle is, or the faster it is moving, the more heat the brakes have to absorb to stop it. b) Brakes respond very quickly when the vehicle is moving fast. c) Brake fade is not caused by heat.