One year later a survey of computer workstations found 106

Reference no: EM13639541

The four major competitors in the computer work-station market are Sun Microsystems (29%), Hewlett-Packard (18.8%), IBM (16%),and Digital Equipment (11.6%) with other manufacturers holding 24.6% of the market. One year later a survey of computer workstations found 106 Sun, 73 HP, 84 IBM, 45 Digital and 90 other. Test at the 10% level of significance whether changes have occurred during the 1-year period.

1. State the critical value for the test.

2. Find the value of the test statistic (to 3 dec pl).

3. Can we conclude that the proportions have changed during the year?

Reference no: EM13639541

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