Find the variance with solution

Q: 3. The juror pool for the upcoming murder trial of a celebrity actor contains the names of 100000 in...

A: It is given that from the population of 100000, a jury of 12 people is to select, where 40% of the p...

Q: required question A simple random sample of size 100 has mean 15, the population variance being 25. ...

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Q: A multiple choice test has 12 questions, with each question having five choices. The number of diffe...

A: Given,Total no.of questions=12

Q: A frequency distribution is shown below. Complete parts (a) and (b). The number of televisions per h...

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Q: Of the 132 bird species in the New Zealand bird population, 38 are extinct. Suppose you randomly sel...

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Q: 4. Which group is the most heterogeneous? Group I scores Group II scores Group III scores 100 123 12...

A: Given Information: Group I Scores Group II Scores Group III Scores 100 102 150 123 102 120 ...

Q: Use the probability distribution to complete parts (a) through (d) below. The probability distributi...

A: a) The probability is P(One or two)= P(1) +P(2)                        = 0.18+0.28                  ...

Q: 4. Given the following set of positive frequencies, find all the remaining class frequencies. (B) N ...

A: N = 23713, (A) = 1618, (B) = 2015, (c) = 770, (AB) = 587, (BC) = 428, (AC) = 335 and (ABC) = 156   

Q: The probability that an event will not happen is P (E') =0.96. Find the probability that the event w...

A: Given information- We have given the probability that an event will not happen is P(E') = 0.96 We ha...

Q: 244.3 and o 80.2. You intend to draw A population of values has a normal distribution with u a rando...

A: X~N( μ =244.3 , ? = 80.2 ) μ = 244.3 , ? = 80.2 , n=20 Z-score =(x-μ)/?

Q: Q2. A researcher tossed a 1000 times and used the number of Heads to conclude that Pr(Head) = 0.5. I...

A: Given that  A researcher tossed 1000 times and used the number of heads to conclude that P(Head) = 0...

Q: • Question 6 About 8% of the population has a particular genetic mutation. 500 people are randomly ...

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Q: 0.99 0.84 0.93 0.99 0.72 0.87 0.88 0.85 0.84 0.86 0.81 0.81 0.82 0.76 0.77 0.83 0.7 0.83 0.82 0.97 0...

A: Random samples of 50 candies with weights (in grams) given. We need to find the sample standard  of ...

Q: The amount of detergent in a box of a particular detergent has a uniform distribution with c=24 and ...

A: Given that  X ~ Uniform( a = 25.9 , b = 26.2 ) c = 24, d = 28

Q: The weights of broilers are approximately normally distributed with mean 1387 grams and standard dev...

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Q: 100(1 a)% confidence interval for the mean u of a normal population when the value of ở is known is ...

A: Solution: Given information: n= 20 Sample size  x = 4.85 Sample mean σ=0.79 Population standard devi...

Q: Assume that final exam scores in a given course are approximately normally distributed with a mean of...

A: Here, mean is 75 and standard deviation is 10 points.

Q: The length of time between arrivals at a hospital clinic has an approximately exponential probabilit...

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Q: Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 a...

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Q: Problem 3 An urn contains 30 red balls and 70 green balls. What is the probability of getting exactl...

A: Here Urn Contains 30 Red balls and 70 Green balls So Total number of balls=100 Here Ball is Picked w...

Q: Find the mean, variance, and standard deviation of the binomial distribution with the given values o...

A: Given, Sample Size, n = 125 Probability, p = 0.51

Q: The table reports the number of weekly death according to age groups and their total for the past te...

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Q: It has been concluded that the tip value has a relationship with the bill of the dinner. Given the ...

A: Given: X Y 33.46 5.5 50.68 5 87.92 8.08 98.84 17 63.6 12 107.34 16

Q: A manufacturer knows that their items have a lengths that are skewed right, with a mean of 11.1 inch...

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Q: dentify each of the following as either descriptive or inferential statistics. a. The average salary...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a ti...

Q: 128499 Use a linear regression to answer the following: E According to the linear regression model, ...

A: Use the Excel And Perform the Regression. Followings are the Steps to perform the Regression 1) Open...

Q: a) In a private school students can choose only of French, Spanish or Music as their Elective. In a ...

A: Determine whether the events "a randomly chosen student is a male' and a randomly chosen student is ...

Q: Identify the level of measurement for each of the statement below. i) The revision time of 15 studen...

A: i) The revision time are ratio level of measurements. There is a meaningful 0. For 0 hours mean no s...

Q: Reconsider Dr. Sameer's research question about how much time Cal Poly students spend on watching te...

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Q: Pbtain the probability distribution of X, the mumber of heads in three tosses of a coin (or a simult...

A: When we toss three coins then the sample space S is given by S = { HHH, HHT, HTH, THH, TTH, THT, HTT...

Q: 3. A construction crew is building a new bridge. A structural component has a 15% chance of failing ...

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Q: Use the data in the table to solve #46-50: below) HINT: add extra columns to your table! Y -2 3 3 7 ...

A: Given data is  X Y 0 -2 3 3 5 0 7 1

Q: In the game of roulette, a player can place a $6 bet on the number 3 and have a a probability of win...

A: Expected value: E(x) = 210(1/38) + (-6)37/38= (210-222)/38 = -12/38 = -$0.3158  

Q: X - Bill ($) 33.46 50.68 87.92 98.84 63.60 107.34 Y- Tip ($) 5.50 5.00 8.08 17.00 12.00 16.00 • What...

A: For the given data b1 = ? Predicted value = ? Sxx = ? F =? Coefficient of determination = ?

Q: question A daily sample of 30 items was taken over a period of 14 days in order to establish control...

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Q: Question 6 The mean weight of female aerobics instructors in a certain city is at most 136 lbs. Expr...

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Q: The International Center for Academic Integrity has performed a well designed survey, finding that 6...

A: Consider that p is the population proportion and n is the sample size.

Q: A die is rolled 100 times with the following distribution : Wamber Observed frequency 1 3 4. 6. 17 1...

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Q: Obtain the probability distribution of X, the mumber of heads in three tosses of a coin (or a simult...

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Q: required question A simple random sample of size 100 has mean 15, the population variance being 25. ...

A: Givensample size(n)=100Mean(x)=15population variance(σ2)=25standard deviation(σ)=25=5

Q: Which of the type of tests are inter-item reliabilities and split-half methods LEAST useful: achiev...

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

Q: omplete the table below. Experiment Number X or the Types of Random Random Variable X Variable Numbe...

A: For the given Experiments determine the Random variable x Types of random variable

Q: After being rejected for employment, Kim Kelly learns that the Bellevue Credit Company has hired onl...

A: Binomial distribution is given by  

Q: Two samples of 6 and 5 items respectively gave the following data: Is the difference of mean signifi...

A: We have given that  Sample size n1= 6 , n2= 5 Sample mean xbar1 = 40 , xbar2 =50 Standard deviation ...

Q: 2. The 2 data sets are replicates of pH values of an alkaline solution (set A) and acidic solution (...

A: Coefficient of variation : A applied math live of the relative dispersion knowledge|of knowledge|of ...

Q: I toss a coin twice. Let X be the number of observed heads. Find the CDF of X.

A: Sample space=S={HH,HT,TH,TT}  Let X be the number of head   

Q: Ten oil tins are taken at random from an automatic filing machine. The mean weight of the 10 tins is...

A: Given  μ=population mean=16, s=standarddeviation=0.50, n=10,  x̄=mean=15.8  tcritical=2.26     

Q: Reality Check. Using the binomial formula and assuming the probability of a baby boy for any birth i...

A: Since you have posted multiple questions, as per our guidelines, we have provided answer for first q...

Q: Two-lined salamanders have weights that are normally distributed and on average 14.7 grams with a st...

A: Given that  X~N( μ = 14.7 , ? = 1.2 ) μ = 14.7 , ? = 1.2 , n=8 Z-score =( x - μ )/?

Q: 1. If P(A) = - determine the odds against event.1 occurring. %3D

A: Note: According to Bartleby guidelines expert solve only one question and rest can be reposted. Give...