Tweet tweet: An article reported that 73% of companies have Twitter accounts. An economist thinks the percentage is lower at technology companies. She samples 70 technology companies and finds that 50 of them have Twitter accounts. Can she conclude that less than 73% of technology companies have Twitter accounts? Use the α = 0.10 level of significance and the P-value method with the TI-84 Plus calculator. Part: 0 / 5 Part 1 of 5 (a) State the appropriate null and alternate hypotheses. Ho: H₁: This hypothesis test is a (Choose one) test. right-tailed left-tailed two-tailed O

Q: 2+3

A: Given,        2+3jyx-j=2j

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A:

Q: Find a x b, and c* (a x b) a = 2i + 3j - k, b= -1 + 4j + 5k, c = 2i + 3j + 4k Show all steps

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Q: 5-solve for the unknown d (P,„P.) = /2ī d (P,P,) = 5 1. P,(x,2,3) P,(2,1,1) 2. P,(x ,x,1) P,(0,3,5)

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Q: 42x+10 b.4r nd rules for these t-tables: 10 47 6. 41 5. 21 22 100 405 10 31 2 2. 13 3. 17 100 497…

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Q: Let u (1, 0 -2) and v3,2. 4). Compute 2u + v. O (4. 2. 2) O (5.2.0) O (6.5. 0)

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Q: Q5 1 Find proj; (w) where w= and v = 2 -2 3

A: Solution:Given     w=10-2     and     v=123To find:projvwFormula:projvw=P wwhere P=v vTvT v

Q: 1-j 1 Evaluate a. b. 1+j 1+j

A: Given: 1-j1+j Now,  1-j1+j=1-j1+j×1-j1-j=1+j2-2j12-j2=1-1+2j1-(-1)=2j2=j Hence, 1-j1+j=j

Q: 3x2+2x x2-6x Determine the non-permissible value(s) for Ox + 0, x # % Ox + 0, x + 6 Ox + 6 Ox + 0, x…

A: The function is given by 3x2+2xx2-6x To evaluate : The non-permissible values of x

Q: 6x 4x 7x + 40 Compute 7. O6+ 80 + C O 3x + 4x - 7In]x| + 40 + C O 18x+ 8x - 7 +C 2x O 3x + 4x-7in|x|…

A:

Q: I Find all values of a for which rank(A) = 2. -1 10 5 A = 2 2 x -3 1 3 6 2

A:

Q: Evaluate L- { 3 2s (s+2)² (s–2)*

A: we need to determine the laplace invesreℒ-132s-3s+22+ss-24

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A: Consider the given figure

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A:

Q: x³ + 27 dx . x+3 Evaluate x3 +9x + C 3 x3 3 +žx²+9x+C 3 x3 + x² – 9x + C 3 2 x3 3 x² + 9x+C 2 3

A: We know that, The sum rule: ∫fx±gxdx=∫fxdx±∫gxdx The Power rule: ∫ax+bndx=ax+bn+1an+1+C And…

Q: 1111

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Q: d) S t3 – 2t2 – 1 dt t2

A: (d) We need to evaluate the following integral ∫13t3-2t2-1t2dt

Q: A = 13 47 AXB = T² 1 1347 e 2 23 AXB ] = 1² mi find b

A:

Q: 3x + 3x3 – 5x2 + x -1 dx x2 + x-2 Q4, Evaluate

A:

Q: 7b + 8b2​2​​ + 3 + y + 2b + 2y + 2 =   A 17b2​2​​ + 3y + 5 B 8b2​2​​ + 9bb + 5y C 8b2​2​​ + 9by +…

A: 7b + 8b2​2​​ + 3 + y + 2b + 2y + 2 = ?

Q: is equal to 2. O True O False

A: topic - division

Q: Find u x v, v x u, and v x v. u = (5, 6, -4) v= (-6, -9, -8) (a) ux v (b) v xu (c) v x v

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Q: j! j=0 4.

A:

Q: 3. What is the value of ? B (9 - 40)" (2t - 3) A D

A: We know thatangle measure=arc measure

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A:

Q: Let 0 0 1 2 1 10 01 b₂ 2 -1 1 0 0 1 b3 Let x satisfy Ax = b. Which of the following is the…

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Q: L1 2s -1 s2(s + 1) Find L

A:

Q: 1 25. L-I s + 5s

A: Note : " As per our guidelines we will solve only first question . If you want any specific question…

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A: The given data is: x2+4xy+y2  factors to x+2yx+4y is  True False

Q: 27 +y factors to (3x+y)(9x-3p)+y. O True O False

A: Given query is to find statement is true or not.

Q: L-1 | 53 5 = 3s +1 3 – s2 + s - 1

A: Find the inverse Laplace transform of 3s+1s3-s2+s-1. Rewrite the denominator:…

Q: 4x³ + 15 dx 15 +c 2x2 4x 15 4x + +c 2x2 15 4x + +c 6x2 4x +c 2x2 15 O 4r + +c 2x6 4,

A:

Q: A cashier's daily pay is given by the expression 9h + 25, where h is the number of hou worked. How…

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Q: 2x 2x is equal to 2-3x+2 r-1 r-2 r-2 O True OF.

A: Given query is to find statement is true or false.