Suppose that for a certain brand of battery, the life in months is exponentially distributed with a deca parameter of m = 77 In symbols, we say that the random variable X ~ E(m), where in this case 1 m = 77 a. What is the expected battery life?

Q: N P M H IJ

A:

Q: 28 = 4 + m 7 8 90

A: We have to find the value of m from given condition

Q: If GH = 12 and HI = 20, GI = ? H

A: Solution-Given details, if GH=12  and HI=20We will calculate value of GI=?

Q: Evaluate 50C2/ 30P2 A. 125/3460 B. 245/870 C. 245/1740 D. 120 E. None of these(

A: Solution

Q: lim XHO et dt X

A: The given limit is: limx→0∫0xet2dtx

Q: 100 dx

A:

Q: 3. If AB = 8x + 5, CB = 10x - 1, and BD AC, 1 solve for x.

A:

Q: Given A, find A'without a calculator. - 11 A = - 2 1

A: The given matrix is:A=-11-21We need to find A-1

Q: also m ?DBA= ?

A: Using alternate angle fact

Q: The waiting times (in minutes) of a random sample of 21 people at a bank have a sample standard…

A: To construct a confidence interval for the population variance σ2 using the sample standard…

Q: AE %3= EC% D

A: Given that : DE ∥ BC , Figure:

Q: 6x If e0 = 23, then x = %3D

A:

Q: g) What is the probability a randomly selected student fails the homework (scores less than 70)? The…

A: From the given data,The scores which are less than 70 :36,47,53,59,60,65,65,68,68,69Number of scores…

Q: If x = -4, then -(-x) = 4. O True O False

A: Solution: The objective is to determine the which option is correct

Q: The boxplots summarize two data sets, 1 and 2. Which of the following must be true?

A: Box Plot: Boxplot shows the spread of data. Boxplot is a graphical representation it is given by…

Q: ADEF = ADSR E F D ZF = ? DR = ? %3D

A:

Q: 4. 2.

A:

Q: Solve for E. h= E mg E = hmg [

A: Given query is to solve for E.

Q: If B = .75, power = %3D

A: From the provided information, The value of beta (β) = 0.75

Q: 6. Which of the following is the least? 2020 А. 2019 В. 2021 2018 С. 2020 2021 D. 2021 2020

A: The complete solutions are given below

Q: If a/b=2, what id the value of 4b/a?

A: Given,          ab=2

Q: A = , for w 2w

A: W=?

Permutations and Combinations

If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.

Counting Theory

The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.