The average retirement age in America is 65 years old. Do small business owners retire at an older average age? The data below shows the results of a survey of small business owners who have recently retired. Assume that the distribution of the population is normal. 58, 62, 73, 77, 61, 74, 75, 62, 70, 69, 64, 76, 70, 64, 70, 64 What can be concluded at the the a = 0.05 level of significance level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Но: μν 65 H1: 65 c. The test statistic [ t 2.504 (please show your answer to 3 decimal places.) d. The p-value = 0.0122 X (Please show your answer to 4 decimal places.) II

Q: part d please in the original picture!

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A: Mean()=12Standard deviation()=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.