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Djkratos264 Djkratos264
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A manufacturer of smartphone batteries will randomly select 20 batteries from the process each day and count the number of defects. Historically, 4% of the batteries produced by this company have been defective. The following data represent the frequency of defective batteries from a random sample of 200 days.



The manufacturer would like to test if the probability distribution for defective batteries follows the binomial distribution with p = 0.04 and n = 20 using α = 0.05. The degrees of freedom for the critical value is ________.

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Business Statistics


Edition: 2nd
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need a.need answers1
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