Suppose 2000 students did an exam so the list of 2000 exam marks is a quantitative variable X. Also suppose the exam mark of 50 is the 1.2th percentile

Q: Let A={0,3,4,5,8},   B={0,1,4,8},   C={1,2,4,5,6,7} List the elements of the following sets. If…

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Q: For a particular elevator, the average weight of a person who enters the elevator is 165.347 pounds…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A source produces dots. And dashes - with P(dot)=0.65. Find the entropy.

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Q: A continuous random variable x is normally distributed with a mean of 1 and a standard deviation of…

A: Given Mean μ=1, standard deviations σ=0.2  X~N(μ=1, σ=0.2) P(X=0.5)=?

Q: 4. A company pays an average of Php 100.00 per hour with a standard deviation of Php 15.00. If the…

A: Note: If the question contains multiple subparts only allow to do first three subparts as per…

Q: THE FF. WERE THE RESULTS OF THE EXAMINATION CONDUCTED FOR GRADUATING STUDENTS. FIND THE MEAN (USE 4…

A: The objective is to compute the mean for the given data.

Q: Suppose that a system generates a stream of upper case alphabetic characters and that the…

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Q: Answer the following questions with TRUE or FALSE, and explain your answer: (a) Let a random sample…

A: Hello! As you have posted 4 different questions, we are answering the first question. In case you…

Q: There are 320 martians traveling together in a spaceship and 128 of them are Male. (*Note: There are…

A: Given Information: Number of Martians is 320 Out of which 128 are male Of the male Martians 56 have…

Q: 2. Approximately, the normal distribution in an examination in statistics has a mean of 78 and a…

A: Hi there! Since there are multiple questions we have solved the first question for you. To get the…

Q: The time required to assemble a part of a machine follows an exponential probability distribution.…

A: given data X follows exponential distribution x = assembly time μ = 7 minutes∴λ = 17 per minute

Q: Another random sample of the number of friends for 30 users of the website is shown. Use this sample…

A: Given: 162 114 131 87 108 63 249 135 172 196 127 100 146 214 80 55…

Q: E (XY)=E (X)E (Y) if x and y are in O a. True

A: The statement is E(xy)=E(x)E(y) if x and y are independent.

Q: Numbers (15-17). Determine the mean of the probability distribution. X 3 5 P(X) 0.07 0.150 7 0.415 9…

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

Q: 1. Given the normal distribution with a mean of 35 and a standard deviation of 6. Find the area: a.…

A: Given information: X~N35, 6μ=35σ=6 Note: As per guidelines we will solve the first question only,…

Q: Which pairs of events are complementary? 1: the component is reliable 2: there is only one component…

A: A pair of occurrences is said to be complimentary if and only if one of them happens while the other…

Q: When using 1-Var Stats on a scientific or graphing calculator, the resulting statistical output…

A: Introduction: It is required to explain regarding the necessity for having two different formulae…

Q: E (XY)=E (X)E (Y) if x and y are independent. True b. False O a. O

A: The expectation of a discrete random variable X is a measure of central tendency of the probability…

Q: Let there be two newly launched phones A and B. The probability that phone A has good battery life…

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Q: Engineers in a design department are assessed by their leader. A 'O' is 'Terrible' and a '5' is…

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Q: Economics Let A be a "random point" that coincides with the point a₁, a2, a3 or a4 with equal…

A: The expectation of a random variable is the weighted average of its values. E[X] = E[Y] = 0.25(-1) +…

Q: Find the percent of the total area under the standard normal curve between the following z-scores.…

A: We have given that z = 0.75 and z = 1.3

Q: You are designing a road system leading to a city. There are 9 lights on the road and the…

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Q: Which (if any) graphs indicate there is an interaction between the two independent variables? Select…

A: Concept:Bar charts are used for graphical representation of quantitative data.

Q: Seth asked a random sample of 20 students how much cash they had in their pocket. The following…

A: given data,n = 20here we have to find out the sample standard deviation for grouped data, x f fx…

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A: The objective is to identify the appropriate option, that infers the likelihood of obtaining a head…

Q: 1956 y = 4.56 (a) Find the regression line y. (Let x represent the four digit year. Round all…

A: Linear Regression equation is Ŷ = b0 +b1X

Q: The probability a machine has a lifespan of more than 5 years is 0.8. Ten machines are chosen at…

A: Given: Probability (p) =0.8Sample size (n)=10number of success(x)=8 X follows binomial distribution.

Q: 4. The table shows the sales of Francine's gift shop for the last 8 months. Francine wants to…

A: Given: x y 1 35050 2 45250 3 37345 4 47652 5 64245 6 42524 7 31246 8 63246

Q: The probability distribution for the random variable,x, is x: 2, 2.5,3.0,3.5,4.0,4.5…

A: Given: x P(x) 2 0.07 2.5 0.36 3 0.21 3.5 0.19 4 0.1 4.5 0.07     Total 1

Q: If 'X' is a continuous random variable, then the expected value is given by. a. [XP(X) b. No value…

A: Given: X is a continuous distribution. For continuous data, integral is used to sum up the values…

Q: Complete the table. Write fractions and mixed numbers in lowest terms. Fraction Decimal Percent 20%…

A: Given: Percent = 20%

Q: Answer the following questions with TRUE or FALSE, and explain your answer: (b) If X and Y have…

A: Note: Hi! Thank you for the question. As you have posted multiple independent true/false questions,…

Q: A random variable, t, has p.d.f. H(t) given by H(t) = 3 e-³t when t >= 0 Calculate the standard…

A: Given that

Q: Given the normal distribution with a mean of 35 and a standard deviation of 6. Find the area: a.…

A: d. Suppose the variable of interest is X.

Q: A discrete random variable has probability distribution: x= 1, 2,3,4, 5 and P(x) =0.12,0.15, 0.23,…

A: Given information: x P(x) 1 0.12 2 0.15 3 0.23 4 0.30 5 0.20 Sum 1.0

Q: This assignment will assess your ability to calculate the mean, median, mode, variance, and standard…

A: Given: Sample size n = 63 Formula Used: Sample variance s2 = ∑i=1n(Xi-X)2n-1 Where, X is a sample…

Q: How many users must be included in the sample if you want to be 95% confident that the sample mean…

A: Since 95% confidence is required, c = 0.95. zc (z-score) at the 95th percentile = 1.96.  E = 10…

Q: Having the text (AA AB AC BCCBBAAADB B B C D). Find The information content in (C)

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Q: he lifespan (L) of each of 2000 valves measured and given Calculate the pro that the lifespan of a…

A: The lifespan (L) of each of 2000 valves and their probability is given below: lifespan (hours)…

Q: Year Discussion Questions 2. The following is the experience of Insurer A for the last three years:…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Part 1 of 4 What is the class width for a frequency distribution with 7 classes? The class width is…

A: Given : Number of classes = 7

Q: The exam scores (out of 100 points) for all students taking an introductory statistics course are…

A: from given box plot, minimum = 25

Q: Example 1. Find Range and Coefficient of Range for following data. 18 19 21 23 25 27 29 14 33 34 37

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Q: Calculate the means and standard deviations of:1, 2, 3, 4, 5 a. O mean = 3; st. dev. = 1.414 O b.…

A: GIVEN DATA ,1,2,3,4,5HERE WE HAVE TO FIND OUT THE MEAN AND STANDARD DEVIATION FOR GIVEN DATA SCORE…

Q: The highway mileage (mpg) for a sample of 9 different models of a car company can be found below. 47…

A: data. 47,49,38,37,47,39,24,23,35 here arrange data in accending order, 23,24,35,37,38,39,47,47,49

Q: given by f(z) = e²,0 <=z <=10 Calculate the probability that z is less than 0.5 O O a. b. 0.83 0.393…

A: Obtain the probability that the Z is less than 0.5.   The probability that the Z is less than 0.5 is…

Q: The following bivariate data set contains an outlier. (Round answers to three decimal places) X y…

A: Calculation of correlation coefficient.

Q: Given the following dataset, which is the proper stemplot? Data: 102, 147, 132, 122, 109, 142, 137,…

A: There is total 10 observations.

Q: Explain the types of measurement scales (ordinal, nominal, interval or ratio), and give examples in…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any questions so i am solving…