Example 24. The following table represents the marks obtained by a batch of 12 students in certain class tests in Statistics and Physics. Sr. No. 2 3 4 6 7 10 11 12 Marks (Statistics) : 53 54 32 30 60 46 28 25 48 72 33 65 Marks (Physics): 55 41 48 49 27 25 23 20 28 60 43 67 Indicate in which subject is the level of achievement higher?

Q: Below is a graph of a normal distribution with mean u=-1 and standard deviation o = 3. T from this d...

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Q: You are given the following information obtained from a random sample of 4 observations. 25 47 32 5...

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Q: 7. As your sample size increases, you should expect your objective risk to (increase/ decrease).

A: As the sample size increases,we can expect our objective risk to decrease. Since objective risk is i...

Q: The ranks of the same 15 students in two subjects A and B are given below ; the two numbers within t...

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Q: The table of data obtained from www.baseball-almanac.com shows hit information for four well known b...

A: From the provided information, the following details are known: Total hits =12348. The hit made by H...

Q: bottled water company has found in the past that 2% of their bottled water does not meet the company...

A: We have given that 2% of their water bottled water  does not meet the company's high standards. And ...

Q: It is known from past experience that in a certain plant there are on the average 4 incidents per mo...

A: In question, We have given that in a plant incident rate per month is 4. Then we'll find the probabi...

Q: girls give lligence tests of two groups of boys and the following result. Examine if the difference ...

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Q: A college entrance exam company determined that a score of 23 on the mathematics portion of the exam...

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Q: A research team conducted a study showing that approximately 10% of all businessmen who wear ties we...

A: Let X be the random variable from binomial distribution with probability (p) = 10% = 0.10 and sample...

Q: Between 2 and 4 P.M. the average number of phone calls per minute coming into the switchboard of a c...

A: Let X denote the number of calls per minute. Then X follows Poisson(2.5) with probability function P...

Q: Always it is challenging to decide between linear regression and nonlinear regression models on any ...

A: First, we plot a scatter plot for deciding whether the model or relation is linear or nonlinear , so...

Q: Calculate the S.D. of the following :

A: Here use given sample data for standard deviation 

Q: Math problem: Verify that if Σ. Σ Y = (Ya, Y6) ~ N(0 = (0a, 0b), E = Eba is a multivariate normal th...

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Q: 4. This data set: 14, 8, 1, 7, 8, 4, 5, 13, 5, 9 has sample mean 7.4 and sample standard deviation 3...

A: T table is used to calculate the. Critical value

Q: Given the following data: 10 15 20 25 30 35 Y 65.76 88.43 122 145 152.6 200.4 Find the Least Square ...

A: Given data, X Y X*Y X*X 10 65.76 657.6 100 15 88.43 1326.45 225 20 122 2440 400 25 145 36...

Q: Aldrich Ames is a convicted traitor who leaked American secrets to a foreign power. Yet Ames took ro...

A: here this is binomial with parameter n=7 and p=0.85 a)P(all pass) =0.85^7 =0.321 b) P(X>=3)...

Q: Q1. A vending machine dispensing books of stamps accepts only one-dollar coins, $1 bills, and $5 bil...

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Q: estigation is the measure of dependence of Tamil or. words of Sanskrit origin. One newspaper articie...

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Q: Goofy Marketing Solutions conducted a survey among 16 randomly selected visitors to the newly opened...

A: The random variable satisfaction score follows normal distribution. We have to construct 95% confide...

Q: 1. Let A and B be two events such that the occurrence of A implies the occurrence of B, but not vice...

A: Since you have posted multiple questions, we are answering the first question. Here, A and B be two ...

Q: A survey of 2255 randomly selected US adults found that 0.51 or 51% of them said they know all or mo...

A: Hypotheses are H0: P =0.5 H1: P> 0.5

Q: Suppose that historically, 35% of applicants that are offered admittance to Texas Tech actually enro...

A: According to the given information, we have Sample size, n = 9300 Given that 35% of applicants that ...

Q: Today, the waves are crashing onto the beach every 5.8 seconds. The times from when a person arrives...

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Q: A mayor running for re-election claims that during his term, average municipal taxes have fallen by ...

A: Point estimate : In statistics, purpose estimation is that the method of estimating associate degree...

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high ...

A: using the given data fill all the blanks required

Q: Test the claim about the population​ mean, μ​, at the given level of significance using the given sa...

A: Given

Q: A poll reported that 63% of adults were satisfied with the job the major airlines were doing. Suppos...

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Q: Part 1 A researcher wishes to​ estimate, with 95​% ​confidence, the population proportion of adults ...

A: a)

Q: class, test, the mean is 85 and the standard deviation was 7.5. grades. conciuded Grade Upper 5% 10%...

A: Solution: Given that:  μ= 85 Population mean of the testσ= 7.5  Population standard deviation of the...

Q: Question: In the picture are three graphical curves. Do you think they are different in the whole sc...

A: We are given three graphical curves and we have to determine are they different in the whole scheme ...

Q: The estimated mean (in km/hr) is:

A: here use  given data table for mean mean = ∑fm∑f

Q: A density curve for all the possible temperatures between 0°F and 40°F is a rectangle. What is the h...

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Q: In order to construct the 95% confidence interval, you choose which formu x ±1.96 × n x + 1.984 × x ...

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Q: What's the probability that one randomly selected whale has a weight of equal or greater than 20MT? ...

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Q: Slandard deviation of a large number, N of observations on chest measurement is 0.5". If random samp...

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Q: The time required for an automotive center to complete an oil change service on an automobile approx...

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Q: Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times ...

A: First we find the mean and standard deviation for the given two groups as below-            

Q: Find the area of the shaded region under the standard normal distribution to the left of the given z...

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Q: Organisms are present in balant water discharged ftrom a ship according to a Ponson process with a c...

A: Poisson distribution : The Poisson distribution is the discrete probability distribution of the numb...

Q: Give a situation in your area that is an example of parameter and statistic. Explain why you conside...

A: Parameter: Any statistical measure based on all units in the population is called parameter. Example...

Q: Use technology to find the P-value for the hypothesis test described below. The claim is that for 12...

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Q: Illustration 17.41 A firm produces articles of which 0.1 per cent are usually defective. It packs th...

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Q: For the following probability distribution: x f(x)   0 0.01   1 0.02   2 0.10   3 0.20   ...

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Q: 10. Given below are the marks obtained by 200 students of a university in statistics paner Marks: 40...

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Q: The Denver Post reported that a recent Audit of Los Angeles 911 calls showed that 85% were not emerg...

A: Given that  The Denver Post reported that a recent Audit of Los Angeles 911 calls showed that 85% we...

Q: How many arrangements are there of the letters of the word MATHEMATICS in which all the vowels appea...

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Q: (d) What is the probability that chloride concentration differs from the mean by more than 1 standar...

A: Here AS per givens note I have calculated d,e, f parts Here mean = 104 Standard deviation  = 5

Q: aim: A minority of adults would erase all of their personal information online if they could. A soft...

A: Given data, n=450 Let p be the proportion of adults that would erase their personal information Expr...

Q: Find (i) the most probable value of Y when X =60 and (ii) r, the coefficient of correlation

A: Here use given data for correlation coefficient and regression line