9. Education researchers were interested in whether the number of close friends changes between the time students enter college and the beginning of their second year of college. A sample of 12 (entering) first-year students was used to examine the question. Data for this sample are shown below. Number of Friends Number of Friends at the Start of at the Start of First Year Student Second Year A 4 3 13 10 5 E F G H 3 7 J K 6 521422 305423

Q: т 1 Let A = (6 "). m Find A4 1

A:

Q: 4. x² 2x 5. (125x²y¹) 6. (16a 1/4

A: (4)  K=x22x-5ax×ay=ax+y

Q: 2/18 – 12/32 + 3V50

A: The solution is given below in the next step:

Q: 3

A:

Q: Divide. 3x – 3 7x - 7 Sx2 24 (x - 1) 7x(x - 1)

A:

Q: Prove that X Pn dx %3D

A: Recurrence relation.  Partial fraction.

Q: C3x2 + – 4 kx - 5x- 6.

A:

Q: n is the same as 239 added to the product of 238 and z

A:

Q: Find the​ P-value for a​ left-tailed hypothesis test with a test statistic of z=−1.49. Decide…

A: The given test statistic z is -1.49, and the type of the test is left-tailed.

Q: రం్ియ 20 5-6 a06 5a 3. 3.

A:

Q: state the null and alternative hypothesis.

A: In 2012, it was reported that McDonald’s had 62 million customers per day. here hypothesized mean is…

Q: 3. A box contains 60 yellow marbles, 110 blue marbles and 90 green marbles. If you pick one marble…

A:

Q: Max 3A + 2B IA+IB ≤ 10 3A +1B ≤ 24 1A + 2B ≤ 16 A, B 0

A:

Q: Simplify. 8(2x³y-3x)-x+5 O 16x³y - 24x O 16x³y - 4x + 5 10x5y - 32x + 40 16x³y - 25x + 5

A:

Q: Find the Funetion

A:

Q: 10 X 12 X-3 +4=0

A: Here we have to find the value of x.

Q: 20 Evaluate 42 E (6m + 3) m=1

A:

Q: A 2/15 B 30 V35 5 20

A: Given,  A circle with secant and tangent  We have to find the value of x

Q: 0 1 2 4 0 2 4 0 0 3 9 12

A:

Q: 1/4 +5/4

A: Solution: The objective is to find the value of the given expression

Q: 6 2/5 ÷ 4

A: Given query is to solve the expression.

Q: i 15Y4 + 32X+ 23x?+ 25X-3

A:

Q: 1) (8s° - 9s) - (3s° + 4)

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: 2. 9=x-2y 3x + 5 = 2y

A: The given equations are system of linear equations in variables x and y. We solve these by…

Q: Find A

A:

Q: 8. B (6,7) (13,7) |(0,2) 10 12 14 My friend had a nearly-empty tank of gas, only enough to travel 15…

A: We have to find that the gas is enough or not to reach at point C.

Q: Fully simplify. (2/-54)(10/48)

A: The detailed solution is as follows below:

Q: 57-24

A: Given that: 57-24

Q: 1 3 前Revie

A: ∠ABD=x°∠ACD=27°∠ABD and ∠ACD are in same segment.

Q: (25 dx +3x

A:

Q: Show that 8 = [(AB) (aß) – (AB) (aB)] %3D

A: ANSWER: For the given data,

Q: 29 Using the combination formula expand (5+x)

A:

Q: /2 2. 1/2

A: (a12+b12)(2a12-3b12)=2a12a12+2a12b12-3a12b12-3b12b12=2a+2a12b12-3a12b12-3b=2a-a12b12-3b

Q: 13. Divide. (2? + 9x – 52) ÷ (x – 4) x + 13 0.-+ 1 – 4 + 4 O++13+ 4 2 x - 4

A:

Q: 3 3/4 + 2 7/28

A:

Q: y - Sy = 0

A: The given differential equation is: y''-5y=0

Q: The expansion of 500P3 is

A: 500P3 is a permutation term that gives the number of ways of arranging different combinations of…

Q: Find the area of the shaded region.

A:

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.