You take an exam that contains 20 multiple-choice questions. Each question has 4 possible options. You know the answer to 10 questions, but you have no idea about the other 10 questions so you choose answers randomly. Your score X on the exam is the total number of correct answers. Find the PMF of X. Find P(X > 15).

Q: Evaluate ,C5 and 10P4- P = 10 4

A: 9C5 = 126 10P4 = 5040  The detailed solution is as follows below:

Q: Let A = (1,0, 1) and B = (0, 1, 3). Solve for projaB. %3D

A: Given, A=1,0,1 and B=0,1,3 We have to find ProjBA.

Q: Average score of 30 students in section 1 is 62 and the average score of 40 students in section 2 is…

A: Average: In statistics, average often refers to the arithmetic mean, the sum of the observations…

Q: State whether the following statement is true or false, and explain why. If the statement is false,…

A:

Q: Free Throw Shot - A player is awarded free throws whenever the player is fouled in a shooting…

A: here given, piel make 60% of his  free throw. Everyday piel make 5 free shot. x=number of free throw…

Q: In a video game you can earn point for passing a level and also a bonus, which is a percentage of…

A: Tokens earned in each level = t  points earned for each level = 3000 + .25t

Q: You go to the deli to purchase some turkey. You can buy 8 ounces of turkey for $3.99, or by 18…

A: Given ,  You go to the deli to purchase some turkey. You can buy 8 ounces of turkey for $3.99, or by…

Q: Elaine opens a checking account with a deposit of $45.00 and wants to put the same amount of money…

A: given,

Q: Fexiy,Zy=Z+ 35ing X+2y -2 X+

A:

Q: A plumber has a piece of pipe that is 5-meter long. He needs to cut it into sections that are 10…

A: According to question

Q: shots 3 free throws every day in practice. Suppose the random variable, X, is the number of times…

A: Given that  Probability of his free throws = 60% = 0.60 Number of his free throws = 5

Q: The lunch special at Alan's Restaurant is a sandwich and a drink. There are 2 sandwiches and 3…

A: The objective of this question is to find out the total number of possible lunch specials at Alan's…

Q: edx%3D 0. OP 8.

A: We have to find correct answer

Q: Many high school students take the AP tests in different subject areas.  In 2007, of the 144,796…

A: Solution To test the hypothesis we will use z test for two proportion.

Q: a.In CSE230, there were 2 assignments this semester. The probability that you would get above…

A: Since you have asked multiple questions, we will solve the first question to be solved then please…

Q: pt.q".r3' p3.q2 = p?q$r7 %3D r-4 n3D

A: Using, xa * xb = xa+b and, xa/xb = xa-b

Q: Nhat areas make up the lowest 15.8% of the distribution?

A:

Q: Evaluate if x = 2 and y = -3. (x + 2) (y– 3) Answer = %3D

A:

Q: A popular fruit drink is made by mixing fruit juices. Such a mixture with 15% juice is to be mixed…

A: Given, we have to use x L of the 15% juice and y L of the 10% juice. So the amount of pure juice in…

Q: The length of a rectangular court is 8 ft longer than twice the width. The perimeter of the court is…

A: Formula for perimeter of Rectangle,                     P=2(length(l)+width(w))

Q: At a conference, Colleen is handing out candy to people who visit her booth. The total amount of…

A:

Q: Paulo wants to earn $2467 by mowing lawns. He will charge $40 for each lawn he mows. What is the…

A:

Q: I have 4 exams that are 80% of my grade. The scores are 78.17, 82, 81.82, and 77.5. I have a final…

A: We will use the formulae F = G-((1-w)*C)w    where F = Final exam grade              G = Grade you…

Q: x - 6 3D12 -6x +3%339

A:

Q: Solve for x. Your answer may be a whole number or a fraction a³ = 343 7 64

A:

Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.