A printer cartridge company claims their ink lasts for more than 5,000 words. The number...
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A printer cartridge company claims their ink lasts for more than 5,000 words. The number of words printed is normally distributed with a standard deviation of 20 (?=20) A sample was taken of 50 cartridges and it was found that they had a mean of 4,940 words. Construct a 95% confidence interval (z = 1.96).Using the interval does the company's claim hold true?a. No, the companies claims are above the 95% confidence interval.b.Yes, the companies claims fall within the 95% confidence interval.c. No, the companies claims are below the 95% confidence interval.d. Yes, the companies claims are below the 95% confidence interval.
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