Question: It has been reported that the average life for halogen light bulbs is 4000 hours. Learning of this figure, your plant manager would like to

It has been reported that the average life for halogen light bulbs is 4000 hours. Learning of this figure, your plant manager would like to find out whether the vibration and temperature conditions that the facility might be having an adverse effect on the service life of bulbs. A sample of 75 bulbs installed in various locations in the plant have been tested and the data has been recorded in the table below. As an engineer working with the quality control department of the company, you are asked to: Describe, organize, summarize, analyze and present your data. 3892 3959 4155 3688 3870 4090 3785 3812 3798 3839 3723 3650 3914 3920 4139 3689 3745 3788 3739 3910 3788 3832 3964 4163 4197 3691 3928 4075 4230 3568 4107 3654 3611 3959 3707 3846 4006 3900 3653 3689 3923 3663 3800 3704 4015 3741 3662 3945 4044 3864 4493 3657 3382 3795 3547 3689 3742 4061 3821 3897 3841 3687 3642 4159 3775 3618 4174 3480 3780 3709 3532 3575 3920 4089 3904

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