Q3 Acme Corporation manufactures light bulbs. The CEO claims that an average Acme light bulb lasts 30 months with a standard deviation of 5 months. A researcher randomly selects 20 bulbs for testing....

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Extracted text: Q3 Acme Corporation manufactures light bulbs. The CEO claims that an average Acme light bulb lasts 30 months with a standard deviation of 5 months. A researcher randomly selects 20 bulbs for testing. The results are given below: 25 19 29 36 36 40 22 26 35 20 23 16 15 21 22 13 24 25 28 25 a) Compute the t statistic for the data. b) Calculate the probability that 20 randomly selected bulbs would have an average life of no more than 30 months. c) Compute the chi square ((x²) statistic for the data. d) Calculate the probability that the standard deviation of the test would be greater than 5 months.