The Wall Street Journal published a study in May 2019 claiming that it was hard to find CEOS that are younger than 50 years old in S&P 500 firms. The Table 1 below shows the ages of the corporate CEOS for a random sample of these firms. 48 58 51 61 56 55 72 63 53 50 55 57 40 57 46 47 53 54 49 55 53 57 57 43 Use this sample data to answer the following questions and to construct a 95% confidence interval for the mean age of CEO's for these top firms. Use the Student's t-distribution. Round to 2 decimal spaces unless specified otherwise. 52 a. Sample mean = b. Sample standard deviation = c. Value of significance t= d. 95% Confidence interval: Lower Limit = and Upper Limit = e. The claim of the Wall Street Journal is valid. Answer "True" or "False" based on your sample test conducted above:

Q: A= B = 3 5 7 -2 . -3 1 [-2 6 L-3 61 3 4. 1 21 1 -2 0 5.

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Q: A 45-45-90 triangle has: a. A short leg b. A long leg  c. Bothe legs are equal  d. All the above

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Q: Fird DB FrEÐ) Eat(O) when D= {brerd}

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Q: If RU = 23, what is ST? V R U ST =

A: Given;         RU=23 In ∆VTS and ∆VUR   VU=UT GivenVR=RS Given∠A=∠A commonSo, ∆VTS≅∆VUR SAS…

Q: Which set of numbers could be the lengths of the sides of a triangle? A. {3,6,9} B. (6,7,13) OC.…

A: We are required to:

Q: Which of the following is equivalent to

A: To find expression that is equivalent to:

Q: Which of the following sets of numbers could represent the three sides of a right triangle? O {21,…

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Q: Correct answer is q imples p

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Q: 4. . What is the length of BD? A. -5 + -10 A B. -7 + + -8 B -6 4 C. 5 D D. 7 2

A: Solve for the length oh BD

Q: Three tools used to make a geometric construction are a straightedge, compass, and writing utensil.…

A: True

Q: + १र Cylincdricul Vecb en

A: Given vector is  A^=3x^+y^+3z^

Q: 5.) What is the value of |3-7| - |-11 +3|? a. -4 b. 4 c. 12 d. 24

A: Given:        |3-7| - |-11 +3|=? formula used:           |-n|= n

Q: 42/ レッ社 イ

A: Given       y' = x2+y ,  for  h=0.1  , y(1)=1 and 1≤x≤2

Q: em with the delinition. Side Side Side (SSS) Side Angle Side (SAS) Angle Side Angle (ASA) Angle…

A: SSS Theorem: triangles with equal corresponding sides are congruent to each other.

Q: Determine which congruence method can be used to prove that the given triangles are congruent.

A: Congruency is a relation that is applicable for geometric figure. Two figures are congruent to each…

Q: Which stamens is true A. quadrilaterals have right angles B. All quadrilaterals are rectangles C.…

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Q: Which triangles are similar to APQR? R APRS AQSR ARQS

A: All the triangle are similar to the given triangle.

Q: @S. Let fGJ = 12 Find fla)=

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Q: Find the measure of angle A. 5) x + 53 x+56 87° A

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Q: a. b. Sett-1 4 Sett 4 Se-4-1 C. 4 d. None of the abu s+1 2-4s) =

A: Let,using partial fractions, we have

Q: find y'cx)

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Q: Jentiais of Geometry FE Par.. Proof Post Attendoe- Zoom Given: AC EC and BC DC Prove: AACB = AECD…

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Q: Which set of lengths below will produce a right triangle, according to the converse of the…

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Q: Tennis balls are often packed in cyindrical canisters. The diagram below shows three balls in a…

A: The question mentions that the balls fit snugly in the canister. Thus, the diameter of the ball is…

Q: Pae that an iterwal B hwise compected pats YOve

A: We have ti shown that every interval is pathwise connected..

Q: 12) The snack bar at Coaster's Field sells roasted peanuts in an open paper container like the one…

A: Given : To determine the paper needed to make one paper container.

Q: ANSWER I

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Q: 22. Marcus recorded the side lengths of four squares in the table below. Side Figure Length Square A…

A: Area= side  square

Q: d) Find x and present answer to 2d.p. 1₁ X + 6 3 9 w pos 3 = X 9

A:

Q: Congruent figures must be the same shape, but can be different sizes. O True O False

A: In congruent figures shape and size are same.

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.