9. Refer to the SC results when appropriate on this question The maker of a uniformly shaped potato crisp wants to ensure that can of their product contain enough chips. Their target is have a mean chip count over 79.5 chips pe can. To check on this, a quality control manager gathered a representative sample of 19 cans and counted the number of chips in each one. A histogram of the chip counts and other output from their analysis is provided below. Frequency 76 78 80 84 86 Chips Variable Sample Mean Std. Err. DF T-Stat P-value Chips 80.42 0.467 18 1.972 0.0321 Does the evidence indicate they have met their packaging goal? Test at the 5% significance level. a.

Q: part d please in the original picture!

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A: Step 1:   Step 2: Step 3: Step 4:

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Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.