Question: . LED light bulbs are renowned for their longevity, outlasting incandescent, halogen, and fluorescent bulbs. Typically, an LED bulb can last over 5 years. These
LED light bulbs are renowned for their longevity, outlasting incandescent, halogen,
and fluorescent bulbs. Typically, an LED bulb can last over years. These bulbs are
not only energyefficient but also come in various styles, shades, and shapes.
Powergen Italia, an Italian company that manufactures LED light bulbs asserts that
their longlife bulb can last, on average, more than hours. A statistician
decided to test this claim. He selected a random sample of bulbs from the
manufacturer and recorded the time until each bulb stopped working. Based on this
sample, can we confidently assert, with a level of significance, that the manufacturers
claim about the average lifespan of their bulbs is accurate? The data for this test is located in the
Bulbs tab of the Excel file Week ASMT Data.xlsx Excel file.
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