A random sample of n measurements was selected from a population with unknown mean u and standard deviation o d.Calculate a 95% confidence interval for u for each of these situations. 20 for each of the situations in parts a through a. n = 60, x 32 b.n 200, x 119 C.n=90, x 13 d. n 90, x 4.59 e. Is the assumption that the underlying population of measurements is normally distributed necessary to ensure the validity of the confidence intervals in parts a through d? Explain. a. (Round to two decimal places as needed.) frect: ? Enter your answer in the edit fields and then click Check Answer 4. parts remaining be onMaLiave:stat3tcsjTOr 6ÚSINESS ano tconOmics 13e This courEe MAT-TE/TS/Oase 81 a e here to search 10/29 nsert 8 44 44

Q: 21. (12 + 5i)-(2 i) 24. (-6 5i)(1 + 3i)

A:

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Q: The answer to bii at the back of the textbook is 38 days. How did they get that? Thanks

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Q: The imaginary unit i is a number such that: i =V-10 %3D i? = -iO i3 = -10 it=10

A: Given that  The imaginary unit i is a number such that

Q: 7) (2+i)? (-5-14 i)

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Q: 22 Perform the indicated operations (a) (4-2i) (4 + 2i) (b) (2 + 4i) ²

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Q: Task 12: Find the value of x. 12 LC

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Q: Substitute ,evaluate and simplify if x=10 then 3cos(4x+230 degrees) =

A: Given,            3cos4x+230°To find : Evaluate the expression when x=10.

Q: 01 y! 1.

A:

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.