The number of selections of 3 students from a class of 7 students for a party in which the class prefect must attend is 1 x "C,. 1+ "C CIx C DI+C B

Q: If X~N(μ , 5), Find μ if P(X>12) = 0.02118

A: We have given that.    X~N( μ , ?^2 )    μ = ?    , ? = 2.23607   Z-score =( x - μ )/?

Q: 9. A string measures 15 inches is cut into two pieces. Let x represent the length of one of the…

A:

Q: An eyewitness to a crime said that the license plate of the getaway car began with the letters Y,…

A: Question is solved.

Q: A family decides to have children until it has three childrenof the same gender. Assuming P(B) 5…

A: From the given information,  A family decides to have children until it has three children of the…

Q: Bag A contains 10 balls of which 3 are red and 7 are blue(assume that each ball is numbered, so all…

A:

Q: 7 and N{B} 3 and N(A U B) = 10, how are If N{A} A and B related?

A: Given: NA=7, NB=3, NA∪B=10 We know that if NA+NB=NA∪B then there is no common element exist in Aand…

Q: No two 'a' are adjacent, No two 'b' are adjacent, No two 'c' are adjacent.

A:

Q: 1. gsin?x x2+7 6+ to Jo

A: We have to use comparison test in 1st part.

Q: showo haw [co(t)+ 3sine) ]= vioet coslt- antan( 3)

A:

Q: Suppose that 9 female and 4 male applicants have been successfully screened for 7 positions. In how…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Evaulate What's 15% of 42?

A: To find 15% of 42: 15% of 42 is equivalent to 15%×42 Convert 15%  into a decimal form.…

Q: acosa (x)+-5sin (x)-4-O

A: Consider the equation,

Q: O At a DBE lecture of 100 students, there are 29 women and 23 men. Out of these students, 4 are…

A:

Q: you are  taking 3 differnt courses and on monday you dedicate 1  hr in the  mormnng and 1  hr in the…

A: There are 3 different courses. One hour time in the morning and one hour time in the night is…

Q: ue, what can be of the houses irds of the

A: The null and alternative hypotheses are, Ho:p=0.67 Ha:p>0.67 This corresponds to a right-tailed…

Q: Assume P(Z> b) = 0.35 for some number b. Without finding the value of b, what P(Z < – b)?

A:

Q: When a = 0.05, n=6, and H: µ # Ho-

A: here alpha  =  0.05  n = 6

Q: -6 B) [ x In(x) 12

A: First I have used the property of logrithmic and made the integral easy and then by substitution…

Q: 8. What is de x2+1

A:

Q: A sum of $1300 is divided amongst P,Q,R, and S such that  (P'share/Q's share)=(Q's share/R's…

A:

Q: b-a on and interval. Round to the nearest thous 3] 523

A:

Q: Can you please answer a and b to this q

A: a) Null Hypothesis: H0: Income buckets and opinion on tax reform are independent. Alternative…

Q: Give the 5 correct conclusions from the diagram

A: Given:

Q: It is known to be Q-N. Accordingly, show that QxQ ~ N.

A:

Q: By Evorhate fe dz (2241)5 C:/Z-i/= 3

A: (a) The given integral is ∮Cdzz2+13  C: z-i=3 To find: The value of the integral. Please post the…

Q: A dining hall had a total of 25 tables, some long rectangular tables and some round ones.  Long…

A: x = 20 y = 5

Q: ind p hat if x is 7 and n is 10

A: The provided information are: Number of success (x) = 7 Number of trials (n) = 10

Q: , nu BU Minutes on Friday. ee CHVITEMCE, 42. MAGAZINES You subscribe to m different magazines. Your…

A: You subscribe magazine =m Your friend subscribe 2 fewer than you Then m-2

Q: The doctor orders 300mls of a drug to be given through a tube ( intra-venous), over a period of 1…

A:

Q: Assume that there are 7 unfilled roles: 4 male and 3 female. There are 6 men and 6 women, including…

A: According to the given information, Total number of unfilled roles = 7 Number of male unfilled = 4…

Q: It is known to be Q∼N.Show that QxQ∼N

A: I have proved using infinite cardinal numbers and its algebra

Q: plogist determines that only 25% of the a

A: Given: Proportionality factor is 0.012 % Remaining of original amount is 25%

Q: Evaluate S(3) if S(r) = 4xr².

A: Given query is to find the value of S(3).

Q: Each of the 10 questions on a multiple-choice exam has four possible answers. How many differentways…

A: Multiplication rule for counting:Consider the total number of events in a sequence is n.The number…

Q: Suppose ∠ABD= 2x+4 and ∠CBD= 3x+1. Find the value of x.

A: Given query is to find the value of x.

Q: Is 1 raised to the power of 2 + 2 raised to the power of 2 equal to 3 raised to the power of 2?

A:

Q: Find the distance between (6, -6) and (-1, 1). O 7 O 7/2 O V14 O 5/2

A: distance between point A(x1,y1) and B(x2,y2) is given as-- D = (x1-x2)2 + (y1-y2)2

Q: QA Evahate 1- fa ++ In(2)x

A: Question number 3/A is solved. Solving more questions are against the policy of bartalby. Posts…

Q: If nana"--) 2anx" = 0, then az = n=1 n=0 (A) ao (B) ao (C) ao (D) ao (E) ao

A:

Q: and y 37 If a = - , then a = 4

A: Solution

Q: Find thenumber of terms common to the two A.P'

A:

Q: 12) M2VUT = 175°, M2VUJ = 17x – 3, and mzJUT=17x+8. Find x.

A:

Q: -3,7 pl5q 1 -18

A: The rational expression is

Q: 4) Find x if m/DEJ = x + 51, m¿DEF = 160°, and mJEF x+ 131.

A: From figure m∠DEF=m∠DEJ+m∠JEF160=x+51+x+1312x=160-182=-22x=-11°

Q: 4.If aCx) =3x?-8, find fCs)

A: Given function, gx=3x2-8

Q: 9o = 1, In = In-1 + 2gn-2 + + ngo-

A: Given: g0=1 gn=gn-1+2gn-2+.....+ng0

Q: -3 4 ind A-, it A = 2 3 3 -4 -2 -3 , -3 -41 O -1 -2 -3 4 2 3 12 13 O -1 -4 -2

A:

Q: B 5ex - In |x| + C

A:

Q: ,a, = 3, a2= 4 and for n 2 3, a, = 2a,-1+ an-2 + 5, express a, in terms of n.

A: Solution

Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.