Test the independence of the two variables in the table below: Enter the test statistic (to 4 decimal places) Var2 below\Var1-> Happy Sad Yes 40 120 No 80 200

Q: Add. 4 5/8 + 4 4/7

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Q: If A = A−¹ . 9 7 1 0 1 5 00 01

A: The matrix is given byTo determine: The inverse of the given matrix.Formula used:

Q: can you explain the first few questions aswell

A: Frequency Polygon: A frequency polygon is a graph that displays the distribution of a dataset. In…

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A: To simplify the below expression.

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Q: Need questions 4 5 and 6 answered please

A: 4. Given: μ=70, σ=5 The corresponding z-values needed to be computed: The probability that a score…

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Q: Subtract. 4 1/3- 3 4/9

A: First, we convert the mixed fractions into improper fractions

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Q: If HK is an altitude then the m25=

A: The altitude of a triangle is also called the height of the triangle. We need to determine m∠5.

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A: Given1.243=y15

Q: Given the graph of the following equation, what is the solution? √x+27= x-3 18 6

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Q: 2. 9=x-2y 3x + 5 = 2y

A: The given equations are system of linear equations in variables x and y. We solve these by…

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Q: Parts A and B please

A: a) It is given that, a box has square base of side x and height h. The volume is 15 and surface area…

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Q: True-false exam: A section of an exam contains four true-false questions. A completed exam paper is…

A: Given Information: A section of an exam contains four true-false questions.  A completed exam paper…

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Q: Write .39 in words.

A: Convert number to words

Q: Simplify. 5 4a 4 5a

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