9. Use the given data values to identify the corresponding z scores that are used for a normal quantile plot, then identify the coordinates of each point in the normal quantile plot. Determine whether the data appear to be from a population with a normal distribution. A sample of drive-through service times (seconds) at McDonald’s during dinner hours: 84, 121, 119, 146, 266, 181, 123, 152, 162.
a. (84, ____________) ROUND YOUR ANSWERS TO 2 DECIMAL PLACES
b. (119, ___________ ) ROUND YOUR ANSWERS TO 2 DECIMAL PLACES
c. (121, ____________) ROUND YOUR ANSWERS TO 2 DECIMAL PLACES
d. (123, ____________) ROUND YOUR ANSWERS TO 2 DECIMAL PLACES
e. (146, ____________) ROUND YOUR ANSWERS TO 2 DECIMAL PLACES
f. (152, ____________) ROUND YOUR ANSWERS TO 2 DECIMAL PLACES
g. (162, ____________) ROUND YOUR ANSWERS TO 2 DECIMAL PLACES
h. (181, ____________) ROUND YOUR ANSWERS TO 2 DECIMAL PLACES
i. (266, ____________) ROUND YOUR ANSWERS TO 2 DECIMAL PLACES
j. Determine whether the data appear to be from a population with a normal distribution.
YES, The data appear to be from a population with a normal distribution. NO, The data does not appear to be from a population with a normal distribution.
from above:
s.no | xi | percentile | z score |
1 | 84 | 0.0556 | -1.59 |
2 | 119 | 0.1667 | -0.97 |
3 | 121 | 0.2778 | -0.59 |
4 | 123 | 0.3889 | -0.28 |
5 | 146 | 0.5 | 0.00 |
6 | 152 | 0.6111 | 0.28 |
7 | 162 | 0.7222 | 0.59 |
8 | 181 | 0.8333 | 0.97 |
9 | 266 | 0.9444 | 1.59 |
from above:
since there is an outlier and plot is not linear,
NO, The data does not appear to be from a population with a normal distribution.
9. Use the given data values to identify the corresponding z scores that are used for...
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A sample of human brain volumes (cm) is given below. Use the given data values to identify the corresponding z scores that are used for a normal quantile plot, then identify the coordinates of each point in the normal quantile plot. Construct the normal quantile plot, then determine whether the data appear to be from a population with a normal distribution. 1025 952 1432 1046 1072 1072 1071 1076 List the z scores for the normal quantile plot. DO000000 (Round...
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