A certain reaction was run several times using each of two catalysts, A and B. The catalysts were supposed to control the yield of an undesirable side product. Results, in units of percentage yield, for 24 runs of catalyst A and 20 runs of catalyst B are as follows: Catalyst A
4.4 3.4 2.6 3.8
4.9 4.6 5.2 4.7
4.1 2.6 6.7 4.1
3.6 2.9 2.6 4.0
4.3 3.9 4.8 4.5
4.4 3.1 5.7 4.5

Catalyst B
3.4 1.1 2.9 5.5
6.4 5.0 5.8 2.5
3.7 3.8 3.1 1.6
3.5 5.9 6.7 5.2
6.3 2.6 4.3 3.8

Required:
a. Construct a histogram for the yields of each catalyst.
b. Construct comparative boxplots for the yields of the two catalysts.
c. Using the boxplots, what differences can be seen between the results of the yields of the two catalysts?

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98

there is nothing below so i cannot

step-by-step explanation:

answer:   the paragraph proof is mentioned below.

step-by-step explanation:

given: in a δxwy where

such that, ∠wzx ≅ ∠yzx and zw≅zy

we have to prove that: segment zx is a perpendicular bisector of segment wy.

prove: since, zw≅zy ⇒ ∠wzy is a supplementary angle.

then, ∠wzy= 180°

⇒∠wzx + ∠yzx = 180° ( because xz divides ∠wzy into two parts)

but, ∠wzx ≅ ∠yzx ( given)

⇒∠wzy+∠wzy=180° ( by substitution)

⇒2∠wzy=180°

⇒∠wzy=90°

⇒∠wzy=∠yzx =90°

therefore, xz⊥wy where wz=zy

⇒zx is a perpendicular bisector of wy.

the answer would be  

a.

3: 1

step-by-step explanation: