A producer claims that his potato chips weight has a normal distribution at least 150 grams. The manager tries to test day shift production weight is heavier that night shift. Because of the complaints of the customers, quality control department select randomly 19 bags from the day shift and find the mean as 146 grams and variance 9 grams and randomly selected 21 bags from the night shift and find the mean as 148 grams and variance 8 grams. If manager want to test the claim as night shift mean weight of the product is greater than that of day shift at 1% level of significance. Calculate the test statistics. (H1: m night shift> m day shift).

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USE 3 DECIMAL
A producer claims that his potato chips weight has a normal distribution at least
150 grams. The manager tries to test day shift production weight is heavier that
night shift. Because of the complaints of the customers, quality control
department select randomly 19 bags from the day shift and find the mean as 146
grams and variance 9 grams and randomly selected 21 bags from the night shift
and find the mean as 148 grams and variance 8 grams. If manager want to test
the claim as night shift mean weight of the product is greater than that of day
shift at 1% level of significance. Calculate the test statistics.
(H1: m night shift > m day shift).
Transcribed Image Text:USE 3 DECIMAL A producer claims that his potato chips weight has a normal distribution at least 150 grams. The manager tries to test day shift production weight is heavier that night shift. Because of the complaints of the customers, quality control department select randomly 19 bags from the day shift and find the mean as 146 grams and variance 9 grams and randomly selected 21 bags from the night shift and find the mean as 148 grams and variance 8 grams. If manager want to test the claim as night shift mean weight of the product is greater than that of day shift at 1% level of significance. Calculate the test statistics. (H1: m night shift > m day shift).
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