The critical values associated with a 80% Cl for the population mean when x = 12.5, %3D n 13 and o is unknown are:

Q: The numbers racket is a well‑entrenched illegal gambling operation in most large cities. One version...

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean ...

Q: 1. The given figure is a stem-and-leaf display of the number of families per barangay who are recipi...

A: Mean is the average of all the observations in the data set. It is denoted as x¯ and defined as : x¯...

Q: school conducted an IQ test to 32 randomly selected students. The standard deviation in the same gro...

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Q: In an experiment on pea-breeding Mendel obtained the following frequencies of seed : 315 round and y...

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Q: A bag contains 7 white, 6 red and 5 black balls. Two balls are drawn at random. Find the probability...

A: Given,no.of white balls=7no.of red balls=6no.of black balls=5Total no.of balls=18

Q: From the data given below about the treatment of 250 patients suffering from a disease, state whethe...

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Q: A continuous random variable X that can assume values between x = 0 and x = 4 has a density function...

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Q: Attempt the following: (i) P(A) = 0.75, P(B) = 0.50 and P(A U B) = 0.87, are the events A and B inde...

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Q: Test whether the two populations have the same variance at the 5% level of significance. (F= 3-36) a...

A: Here calculate sample statistics from given data and perform F test for comparing two population var...

Q: Which of the following is true about the sample mean x̄? a. It is the best estimate of the underlyi...

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

Q: A local pharmaceutical company believes it has a 40% chance of being successful on bidding a contrac...

A: The expected value for the random variable X=amount obtained from the bidding contract, with the pro...

Q: Continuous Random Variables take on all possible values in an interval of numbers. The probability d...

A: A continuous random variable is a variable whose value can be obtained by measuring. A continuous ra...

Q: A bus service carries 10 000 people daily between Ajax and Union Station and the company has space t...

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Q: For a hypothesis test comparing two Independent population means, the combined degrees of freedom ar...

A: given: hypothesis testing of comparison between two population mean  and population standard deviati...

Q: 1. Which investment give a higher expected profit? 2. If the businessman is willing to take a risk, ...

A: here for investment A mean = 7200 variance = 14760000   for investment B mean = 7500 variance = 8425...

Q: If a system is such that its input X(t) ind its put Y(1) are related by a convolution integral, i.e....

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Q: A) Which of the following experiments does NOT have equally likely outcomes? A- Choose a number at r...

A: Equally likely outcome : Equally likely outcome means all the outcome should have equal probability....

Q: What is the minimum annual total cost (ordering, holding and purchasing) if the buyer places indepen...

A: Solution: Project X Order size Per per unit Purchase cost of 600 units Ordering cost Carrying cost T...

Q: What is the p-value?

A: The p-value is defined as the probability of getting the value of test statistic at least as extreme...

Q: (b) Find the z-score for a SAT score of 535. The z-score for an SAT Score of 535 is

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Q: A veterinarian collects data about puppies in her practice. She makes a scatterplot with their age i...

A:  x = age in days  Mean 42  Standard Deviation 7 y = Weight in ounces Mean 25 Standard D...

Q: Calculate 20.062-

A: we want to calculate Z0.062

Q: If a random variable X follows normal distribution with mean 10 and standard deviation 50, write dow...

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Q: at what number Example 6. If the cost of making x units is C Rupees where c = 10 + 9x of units with ...

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Q: Monthly sales have been found to follow a linear trend of y = 10 + 8x, where y is the number of item...

A: Given regression line is: y = 10 + 8x

Q: Lesson 8 Q7 Find the critical value if df = 16 and α = 0.050. A.36.415 B.26.296 C.24.996 D.16.151

A: We have given that,  Degree of freedom (df) = 15 and significance level (α) = 0.050 Then,  We will f...

Q: 3. You and a friend are tossing two fair coins. If both coins show heads, you win $2, if both show t...

A: Here X is a winning after single play of game. X takes values $2, $1 and -$1 P(X=$2) = P(HH) = 1/4 =...

Q: Consider rolling a die. What is the average number of spots that would appear? a) construct a probab...

A: When a random experiment is repeated several times, it's called repeated trial. The outcomes can alw...

Q: 1. Let X be a discrete random variable, supported on {0,1,2, 3, 4}. Suppose that the distribution of...

A: Let X be the random variable having values      {0, 1, 2, 3, 4} from discrete uniform distribution. ...

Q: Find the sample space of the following experiment using table. 1. tossing 4 coins and rolling a die ...

A: We need to find the sample space for given experiments.

Q: Two random samples were drawn from two normal populations and their values are : A: 66 B : Test whet...

A: Given : At 5% level for v1=10 and v2=8  F0.05=3.36 The null and alternate hypotheses are : Ho: Popul...

Q: Lesson 11 Q6 The following table shows the sale of each fruit in a shop. Fruits Number of Fruits App...

A: Given data is Fruits Number of Fruits Apples 24 Oranges 20 Pomegranate 15

Q: Standardized tests: In a particular year, the mean score on the ACT test was 22.3 and the standard d...

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Q: Bottles of purified water are assumed to contain 250 milliliters of water. There is some variation f...

A: Claim : The mean amount of water in all the bottles filled that day differs from the target value of...

Q: The table below shows the probability distribution for X, where X represents the number of intercept...

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Q: COMBINATION OR PERMUTATION?

A: here use definition of combination and permutation

Q: Assuming o is known, find a method of moments estimator of µ. Assuming u is d a method of moments es...

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Q: b) The following are the diastolic blood pressure readings (mm Hg) taken from five men and five wome...

A: We assuming that the data constitute independent random samples from normal populations with equal v...

Q: Two samples are drawn from two normal population. From the following data test whether the two sampl...

A: There are two independent samples which are sample 1 and sample 2. We have to test whether the two s...

Q: An electrical firm manufactures light bulbs that have a length of life that is approximately normall...

A: GivenMean(μ)=800standard deviation(σ)=40sample size(n)=26

Q: Suppose that the daily viewing time is normally distributed with a mean of is 8.35 hours and a stand...

A: Determine the number of hours of television viewing must a household have in order to be in the top ...

Q: The mean life of a sample of 10 electric light bulbs was found to be 1.456 hours with standard devia...

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Q: playing a gaime p. She wiIS ST Il the Colns comes up neads, and looses omes out talis. She starts wi...

A: Given p=0.6 q=1-0.6   =0.4  

Q: . A milk producers union wishes to test whether the preference pattern of consumers tor its products...

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Q: Suppose X1,..., X. 50, for k = 1, 2, 3, 4 are independent 2- k,1: dimensional random samples from 4 ...

A: Given that Xk,1, . . ., Xk,50, for k=1, 2, 3, 4 are independent two dimensional random variables fro...

Q: The number N of residential homes that a fire company can serve depends on the distance r (in city b...

A: Given,N=Cπr2here C=7π=3.1416E(N)=E(Cπr2)E(N)=CπE(r2)

Q: If two RVSX and Y are independent, find the pdf of Z=XY in terms of the density functions of X and Y...

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Q: If the profit on a raffle ticket has an expected value of -$5, then the most likely outcome of purch...

A: Given that - If the profit on a raffle ticket has an expected value of -$5, then the most likely out...

Q: The lifespan of a laptop battery is normally distributed. If the mean lifespan of a battery is 4 yea...

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Q: lew sales representative A corporation damin Management is interested in the extent to which this te...

A: Solution: Let x = Test scores and y= Weekly Sales x y (x-x) (x-x)2 (y-y) (y-y)2 (x-x)(y-y) 55 1...