According to the table below, what is the probability that the age of a student chosen at random will be 15 or younger? Age 13 14 15 16 17 18 Probabilty 0.01 0.25 0.28 0.30 0.15 0.01

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Q: Frequency distribution of marks obtained by 90 students is given below. Compute: (a) Arithmetic mean...

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A: An Economics instructor assigns a class to investigate factors associated with the gross domestic pr...

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Q: State the Five Number Summary for the following dataset. 44   45   46   47   49   51   54   55   58...

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Q: Find Q1 = Find Q3 =

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Q: Compute the mean and standard deviation for the following probability distribution. * P(x) 1 0.25 2 ...

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Q: Find the co-efficient of correlation for the following table : x: 10 14 18 22 26 30 y: 18 12 24 6 30...

A: Given data is x 10 14 18 22 26 30 y 18 12 24 6 30 36

Q: using excel function answer the following - A manufacturer knows that their items have a normally di...

A: Let X be the random variable from normal distribution with mean (μ) = 8 and standard deviation (σ) =...

Q: A random sample of 20 maximum sentences for murder yielded the data, in months, presented to the rig...

A: Given data is259,266,261,266,342,333,306,255,309,288,375,298,294,292,294,272,273,265,278,297sample s...

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Q: Let p be the population proportion for the following condition. Find the point estimates for p and q...

A: We have given that,  Favorable cases (X) = 2972 and sample size (n) = 4738 Then,  We will find the p...

Q: above the 75th percentile, then outliers can be found at how many standard deviations above the mean...

A: here use standard normal z distribution table for z score of 75th percentile that is Q3

Q: What is the expected number of stiff-eared puppies (n=4, p(pointy)=D0.25, and p(floppy)=0.75)?

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Q: Match each correlation value with its interpretation A. large (strong) negative relationship B. smal...

A: Given:  correlation coefficient  r1=-0.8 ,r2=0.1. And r3=0.7  Then write the conclusion based on rel...

Q: b) Calculate the p-value for Ha: ?2 > 29, n = 14, ?2 = 32.7. (c) Calculate the p-value for Ha: ?2 ≠...

A: Here alternative hypothesis is right sided. Hence p value = P (?2 >32.7)  Where ?2 has degree of ...

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Q: a. State the Pearson correlation trend between the two variables  b. List the necessary steps to de...

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A: From the provided information, The hypotheses are as follow: H0: µ = 20 versus Ha: µ > 20

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Q: Consider the following hypothesis test for the mean difference. (Give your answers correct to four d...

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Q: In a recent year, the total scores for a certain standardized test were normally distributed, with a...

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Q: Find the co-efficient of correlation for the following table : x: 10 14 18 22 26 30 у: 18 12 24 6 30...

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Q: 5. Use the data in the table below to calculate the TRIN ratio for the Nasdaq. Is this figure bullis...

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Q: Here are summary statistics for randomly selected weights of newborn girls:n=157, x=28.8 hg, s=7.2 h...

A: Given: n = 157 X bar = 28.8 hg s = 7.2 hg Level of significance = 0.01      

Q: Suppose that the FDT of heights (in cm) of students is given in the table. Classes Frequency 147-15...

A: We have given that,  The data set is,  Classes frequency 147-155 10 156-164 2 165-173 3 1...

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A: in A scatter plot each  1): individual is represented by two data points  2): group mean represented...

Q: Some threats to internal validity are relatec related to time? O A. selection bias B. history effect...

A: Selection bias:  An error in choosing the individuals or groups to take part in a study. Ideally, th...

Q: TABLE 6E.2 earing Diameter Data Sample Number i R Sample Number I R 1 34.5 3 13 35.4 8 2 34.2 4 14 3...

A: Given:

Q: 3. Consider the above Frequency Distribution of Salaries. Salary 41,000 - 50,000 51,000 - 60,000 61,...

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Q: The sample standard deviation follows a normal distribution if the population follows a normal distr...

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Q: In a recent year, the total scores for a certain standardized test were normally distributed, with a...

A: Given,mean(μ)=500standard deviation(σ)=10.3

Q: 1. Following are the annual premiums charged by an insurance company for a policy of Rs 1000. Calcul...

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Q: Use the information below to calculate the value of Sy. Assume that the is a positive relationship b...

A: Givenx = 21.2R2=0.53sx=2.84b0=19.4y=46.1

Q: For a box plot, here are 4 values at the low end of a dataset and 4 values near the high end of a se...

A: Given: Data 2.7 5.5 6 9 … 50.5 54 60 65 Value 5 & 47

Q: Perform a statistical test for the given problem. Follow the steps in hypothesis testing when you pr...

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Q: The mean of a distribution is 15 and the standard deviation is 3. Use Chebyshev's Theorem and the fo...

A: Chebyshev's Theorem : For any data se the proportion of observation that lie within K standard devi...

Q: Ilustration 11. Calculate the standard deviation from the data given below: Size of item Frequency S...

A: Given, size of item (X) frequency (f) f.X f.X2 3.5 3 10.5 36.75 4.5 7 31.5 141.75 5.5 22 12...

Q: Logan Tire Shop has racing tires, Logan sampled 52 customers, and 39 was very statisfied with their ...

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Q: From the following data compute the value of upper and lower quartile, D,. P, and P, Marks below 10 ...

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