The following is a collection of grades of students in Survey Sampling. You want to estimate the mean grade of the current class where N = 157. How large shall the sample size be if a margin of error of 3 units is desired with a confidence level of 0.9? 76, 74, 73, 72, 88, 82, 69, 88, 87, 78, 91, 72, 73, 71, 70, 81, 80, 75, 76, 82

Q: per time Q7] Suppose that in a production of spark plugs the fraction of defective plugs has been…

A: Given data  P(defective) = p = 0.02 so p(no defective ) = 1-0.02 = 0.98  Inspect two products.  We…

Q: 1. How many arrangements could be made of the word GRATEFUL if: o there are no restrictions? o the…

A: First question is answered from given multiple questions

Q: a. What is the probability that all the three grade 11 students are included? b. What is the…

A: here in given problem no need of graph or curve  here given in group of 10 students , there are 3…

Q: Instructions: Find the missing probability. P(B) = = P(A|B) = P(A and B) 20

A: From the provided information, P (B) = 1/5 P (A|B) = 9/20

Q: 24/ The average on a statistics test was 78 with a standard deviation of 8. If the test scores are…

A: Given Mean=78 Standard deviation=8

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A:

Q: Q1/ Grades in statistics class are weighted as follows: Tests are worth 50% of grade, homework is…

A: Here Given  Grades in statistics class are weighted as Tests are worth 50% of grade, homework is…

Q: A variable that can assume any value between two given points is called Continuous random variable…

A: Variable A variable may be defined as a quantity, characteristic, or number that can be measured. It…

Q: Q1/ Grades in statistics class are weighted as follows: Tests are worth 50% of grade, homework is…

A: The following information has been given: Assignment/Exam Grade/Points Weight (%) Test 80 50…

Q: 34. A college offers tutoring in Math, English, and Chemistry. The number of students enrolled in…

A:

Q: I want it through probability and random variables with maximum speed Q4: A- If the average number…

A: poisson distribution is given by

Q: A newspaper sports reporter has a 58% accuracy for predicting the winners in NHL hockey games. A…

A:

Q: probability that the committee is made up of only students of the same sex?

A: In a class there are 10 girls and 8 boys, a committee is formed with a president, a secretary and a…

Q: What is the sum of the probabilities in any probability distribution? a) infinite O b) 1 (c) 2 d) o

A: We have to find correct option for sum of probabilities.

Q: Two "random" quarter-circles is generated as follows. First one randomly, uniformly choose a cutoff…

A:

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

A: The standard deviation can be calculated by taking square root of the variance of X. And the…

Q: Ownership Age PE NoCat 13 Yes Cat 14 Yes NoCat 14 Yes Cat 19 Yes Cat 16 Yes Cat…

A: Note: As per guidelines we will only answer the first three subparts, please repost other subparts…

Q: a. Determine the variance of 2

A:

Q: ) Compute the upper and lower control limits if samples of size 6 are to be used. (R UCL = 134.85 x…

A: It is given that Mean = 127.5 SD = 0.4 And sample size n = 6

Q: In a box containing 8 red balls, 8 green balls and 8 blue balls where 3 balls will be drawn in…

A: Answer:-  GIVEN  In a box containing 8 red balls, 8 green balls and 8 blue balls              where…

Q: p.d.f. h(x) of the random variable x is defined by h(x)=3/(4(1-x²)),-1<x< 1,Calculate the standard…

A:

Q: Can anyone elplain what these jumbled numbers are supposed to tell me? Thank you!

A:

Q: A group of employees of Ateneo De Manila University were asked if they own a credit card or not. The…

A: Probability distribution

Q: One day at the dog park, John counted 135 dogs, of which 47 were off leash playing. Of the 47, 10…

A: Given : Total number of dogs=135 Off leash =47 Leash=135-47=88 Retriever=35 Not retriever…

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A: The hypothesized proportion is 0.80.

Q: An un contains cards numbered 1.2 ... 100 . Let X be the least number on the 50 cards drawn randomly…

A:

Q: The number of kilograms of bananas sold by a certain fruit vendor over a year follows a Poisson…

A: GivenAn average 52 kg of bananas per day λ=52

Q: .Find the standard deviation of -2, 7.2, 6.9, -10.4, 5.3 6 .a O 6.9 .b O 7 6.78 .CO .d O

A:

Q: A scheme of random number generator is described as follows. First, one generates a normal random…

A:

Q: A study claimed that the competence of Engineers is described as moderately competent having an…

A: Given information: μ=4.02x=3.35n=55N=110s=0.3519α=0.01

Q: Q3/ The probability that a consumer will rate a new antipollution device for cars What are the…

A: Given: P(Very Poor) = 0.07 P(Poor) = 0.12 P(Fair) = 0.17 P(Good) = 0.21 P(Very Good) = 0.32…

Q: 3. The table shows the predicted growth of particular bacteria after certain number of hours. Write…

A:

Q: Car manufacturers produced a variety of classic cars that continue to increase in value. Suppose the…

A: Given Information: Consider the given dataset: Model Rating (x) Price (y) A 18 1600 B 17 450…

Q: What is the probability of exactly two of the selected bulbs are rated 75-W? What is the probability…

A:

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

A: X 2 2.5 3 3.5 4 4.5 Total P(X) 0.07 0.36 0.21 0.19 0.10 0.07 1

Q: Classify the following statement as an example of classical probability, empirical probability, or…

A: We have to find type of probability used.  Probability of choosing 5 number from 1 to 58 that…

Q: Number of circular permutations of different things taken all at a time is (n-1)!. a. True b. False…

A: Permutation is the measure that used to determine the arrangement of objects. There are different…

Q: a. What is the probability that all the three grade 11 students are included? b. What is the…

A: here given  there are total 10 students in group  and of them 3 students are grade 11 students  5…

Q: Suppose 5 men out of 100 men and 10 women out of 250 women are colour blind, then find the total…

A:

Q: a. Determine b. Determine the expected the expected value of x value of Y

A: EX=∫01X*g(X)dx=∫X2XX+13dx=∫2X2X+13dx=∫2X3+2X23dx=2X4401+23X3301=12+29=0.722

Q: how did you get 10/165

A: Given that, No. of freshman = 2, No. of sophomore = 1, No. of juniors =3, No. of seniors = 5 Total…

Q: 6 6.9 7 6.78 .a O .b .CO .d

A: Given Data -2, 7.2,6.9,-10.4, 5.3

Q: no 6 is the question at the lowest part,i know how to solve no 5,can u help to solve no 6?

A: 1

Q: Records indicate that, in Australia, 65% of secondary students participate in sport, and 71% of…

A: The following information has been given: Let A denotes the secondary students  who participate in…

Q: questions, each An examination consists of multiple-choice having five possible answers. Suppose you…

A: Event  A you know the answer B you guess the answer  C your answer is correct  P(A) = 0.75 P(B) =…

Q: A variable that can assume any value between two given points is called Continuous random variable…

A: In above question we will discuss about continuous random variable and whether above statement is…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A:

Q: a. P(Z -1.76). P(Z > 2.42). b. C.

A: We will use Standard Normal table to find the required probabilities. Note : According to our…

Q: The p-value will correspond to a two-tailed area using  t = 1.124 with n − 2 = 3  degrees of…

A: The test is two tailed.

Q: e Determine the standard deviation of X f. Determine the standard deviation of Y 9. Determine the…

A: