Observed : 21 smooth/yellow 42 smooth/light-yellow 19 smooth/white 22 wrinkled/yellow 39 wrinkled/light-yellow 20 wrinkled/white Does our observed data show a statistically significant difference when compared to our expected values

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Q: (20 pts) Random samples of 1000 bolts manufactured by a type A machine and 900 bolts manufactured by…

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.