19. Suppose the Internal Revenue Service reported that the mean tax refund for the year 2017 was $2,800. Assume the standard deviation is $450 and that the amounts refunded follow a normal probability distribution. a. What percent of the refunds are more than $3,100? b. What percent of the refunds are more than $3,100 but less than $3,500? c. What percent of the refunds are more than $2,250 but less than $3,500? The distribution of tha --rinan ldel tala.

Q: 8 15

A:

Q: 32 26

A: Use, sin(theta) = Perpendicular/Hypotenuse

Q: 54 22

A: Given figure,

Q: 24 25

A: The base of the triangle is 24. The hypotenuse of the triangle is 25. The triangle is right angled…

Q: 24 12 XD

A:

Q: help me

A: x = 46°                 (Corresponding angles are equal)

Q: 8x) dr

A:

Q: (369) 34 / 3 * 9 +12 / 4 * 5

A: Given,             369343*9+124*5

Q: d) +4 dx

A: The answer is

Q: 9) 60

A: The figure is

Q: 25 25

A: From the given figure:     From the Pythagora's theorem:   Hypotenuse2=Perpendicular2+Base2

Q: 16) 93

A: Explanation of the solution is given below...

Q: 6)270

A: Given data:   The given expression is 270/6.     The number 270 can be written as, 270=3×90=3×2×45

Q: 3. V(3437)3 + 10215

A:

Q: 29 24 tf

A: From the trigonometry formula, we can calculate the angle by using any of the trigonometric…

Q: 22 6

A: Find the angle x .

Q: 36 14

A:

Q: 13

A:

Q: what is five tmes 2

A: Five time 2 means multiplication of 5 and 2

Q: 62 28

A: A circle is given below as shown We have to find x°

Q: 부 18 13)

A: We can make it easier for you.

Q: 58)1,325

A: Quotient is 22 Remainder is 49

Q: 28)9,589

A: Given

Q: 20) 14 X 4

A:

Q: 5 23 4 48 1 5 75

A: Given       5  2 3 − 4 4 8¯      1  5 7 5

Q: 38 10

A:

Q: 19 *72°

A:

Q: 3) 3/2 45 2

A:

Q: 3,605 + 1,733

A: Perform the addition from right to left to add two numbers . It implies first add the unit places…

Q: 4 ) V8

A:

Q: 6

A: 15×6This is a multiplication of two numbers 15 and 6.

Q: FIND n +n?

A: Check convergence of ∑n=1∞ 2n+n2:Apply the constant multiplication rule:  ∑c·an=c·∑an=2·∑n=1∞…

Q: 9) 105 75

A:

Q: 2)2 6.

A: Given: 622

Q: A is a 4x3 matrix, what is the largest possible dimension of the row space of A? If A is a 3x4…

A: If A is a 4×3 matrix, then we need to find the largest possible dimension of the row space of A.…

Q: 4x 17) 413

A: Given :4x4y24y3

Q: 18 16

A: The objective is to find the value of x :  In the  given right triangle , Perpendicular = 16…

Q: m21, m22, m3 2 56 43 3.

A: Given diagram is,

Q: 53. Faxt3

A: Given that, xa-1=ax+3 We need to solve it for x.

Q: 110,15,205, 12,R

A: According to the given information: 10,15,2.5,ϕ,0,ϕ,8+2,ℝ=8

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.