Continuing its monitoring of the upload speed first described

in the Chapter 6 Managing Ashland MultiComm

Services case on page 221, the technical operations department

wants to ensure that the mean target upload speed for

all Internet service subscribers is at least 0.97 on a standard

scale in which the target value is 1.0. Each day, upload

speed was measured 50 times, with the following results

(stored in AMS9 ).

0.854 1.023 1.005 1.030 1.219 0.977 1.044 0.778 1.122 1.114

1.091 1.086 1.141 0.931 0.723 0.934 1.060 1.047 0.800 0.889

1.012 0.695 0.869 0.734 1.131 0.993 0.762 0.814 1.108 0.805

1.223 1.024 0.884 0.799 0.870 0.898 0.621 0.818 1.113 1.286

1.052 0.678 1.162 0.808 1.012 0.859 0.951 1.112 1.003 0.972

1. Compute the sample statistics and determine whether

there is evidence that the population mean upload speed

is less than 0.97.