What was the class average

Q: 1. Run the best subsets procedure. Identify the best model to use and why? 2. Run the regression pr...

A: Given information:- Price SqFeet Age Bedrooms Bathrooms Garage spaces Mtn View 110000 1000 28 3...

Q: The following is a monthly trend equation : Y = 40 + 4X Note: [origin Jan. 2012, X-unit = one month,...

A: Solution is given in the attached picture:

Q: The table below shows some data from the early days of the Italian clothing company Benetton. Each r...

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Q: Samples of three cards are drawn at random from a population of six cards numbered from 1 to 6. Cons...

A: 1)  The population of six cards are numbered from 1 to 6. Three cards are randomly selected. The obj...

Q: Problem 1. Consider a family of 1-dimensional class-conditional densities given by: exp I >0 604 whe...

A: Given: p(x|wi)=x36θi4exp-xθi,  x≥0 to find mle of θi

Q: The following table gives aptitude test scores and productivity indices of 8 randomly selected worke...

A: Solution is given:

Q: Example 2-31. Find the niean deviation fron the mean and standard deviation of A.P. a, a +d, a + 2d,...

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Q: Forty-five percent (45%) of shoppers at Supermarket Xtra indicate that they were dissatisfied with t...

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Q: From the following data, prepare a 2 x 2 table and, using Yule's coefficient, discuss whether there ...

A: solution is given below:

Q: Illustration 26. Calculate the cost of living Index Number from the following data : Price ITT Items...

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Q: c. the sample size was very large

A: Answer:

Q: Assume that the population is approximately distributed. The Department of Labor and Employment repo...

A: Any assumption about the parameter or probability function is known as hypothesis testing . For the ...

Q: and let Y; = Xí, i = 1, ..., n. %3D Find the distribution of W 2(Y1+Y2+Y3) 3(Y4+Y5)

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Q: With the help of the following data, prove that Fisher's ideal index satisfies both the time reversa...

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Q: (b) Find P (Less than or equal to 4). P (Less than or equal to 4) =

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Q: If n = 61, ã=38, and s = to one decimal place. 8, construct a confidence interval at a 80% confidenc...

A: Given Information: Sample size n=61 Sample mean x¯=38 Sample standard deviation s=8 The objective is...

Q: A coin is tossed 400 times and it turns up head 216 times. Discuss whether the coin may be unbiased ...

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Q: By using the following data compute the Karl Pearson's coefficient of correlation. ΣΧ-250, ΣΥΥ-300, ...

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Q: The school canteen is doing a survey on the food preferences of the students. They printed 100 surve...

A: The appropriate sampling technique is to be defined for the 100 students (considering a single form ...

Q: The following data represents the age (in years) of South African passengers on a flight to Australi...

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Q: An insurance company keeps a record of insurance plans sold per day for the past 150 days, as summar...

A: Solution: x =Number of Insurance plans sold per day  f= Frequency of occurance  x  (f) x2 fx fx2 ...

Q: 1) On the assumption that IQ's are normally distributed in the population with a mean of 100 and a s...

A: Given that, μ=100,σ=15 (a) The percentage of population has an IQ 135 is,

Q: If the characteristic function of a RV X is f,(@) and if Y = aX + b, then O,(@) = ibo e

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Q: lakhs) of a certain commodity for the year On the basis of quarterly sales (in 2008-12, the followin...

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Q: Calculate Fisher's Ideal Index Number from the data given below and show that it satísfies Time Reve...

A: Solution is given:

Q: Given standard normal curve, find P(-2.38<z< -0.54). A 66.47% B В 69.67% © 31.75% D 28.59%

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Q: Ms. Cruz wants to know the average weekly allowance of the grade 10 students. She randomly asked 50 ...

A: Parameter :  The parameter is a single value and it describe about the whole population.            ...

Q: An enquiry into the budgets of middle class families in a certain city gave the folſowing informatio...

A: For the given data, we need to calculate the Cost of Living Index Number of year 2011 as compared wi...

Q: Out of 100 German nationals, 60 liked music of their own language, whereas 70 French nationals out o...

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Q: A random sample of the number of carabaos in various barangays in Pampanga is shown below. Estimate ...

A: Given data is 47,8,68,29,95,54,33,64,90,3,49,4,7,15,21,52,4,8,57,9,80,44,79,80,48,16,6,78,109,40,50s...

Q: In a simple regression problem, r and B may have opposite signs. O must have the same sign. O must h...

A: We know that, in a simple regression problem, r = correlation coefficient B = slope

Q: 21. Given: n = 80, X = 76.5, s = 3.1. Which of these is the point estimate of the population mean? a...

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Q: Two populations have means μ0 = 9 and μ1 = 10.15, and they both have a standard deviation of σ = 3.0...

A: Given ,  μ0 = 9 and μ1 = 10.15 standard deviation σ = 3.003  n = 25  α = 0.05.

Q: Given that the population of the US was 151 million, 216 million, and 281 million in 1950, 1975, and...

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Q: 1) The following data come from a table that was measured with high precision Use the best mumerical...

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Q: The normal probability distribution is applied to?

A: We have to define probability distribution is applied to?

Q: Emmanuel observed that the probability distribution of X, where X is the number of students who fall...

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Q: For items 28-35: In a learning style study, 1200 respondents were asked if they can assimilate conce...

A: Givensample size(n)=1200x=586confidence interval is 95%

Q: a State the decision rule in terms of the critical values) of the test statisti Reject the nul hypot...

A: It is given that Sample size n = 75 Sample mean = 46.5 Population SD = 8 Level of significance = 0.1...

Q: Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to d...

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Q: . In a trivariate distribution. o, = 3, o, = 4, 0, = 5 r, = 0.4, r,, = 0.6 r,, = 0.7 %3D Determine t...

A: The regression line has more than one independent variable then it is known as multiple linear regre...

Q: The average production of peanuts in Virginia is 3000 pounds per acre. A new plant food has been dev...

A: The unit of interest is the singular observation which used to study the data set. Variable of inter...

Q: The mean weight of all Goliath grouper caught on the treasure coast is 435 pounds with a standard de...

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Q: According to a recent survey, the salaries of entry-level positions at a large company have a mean o...

A: Given: μ=41750σ=8000

Q: The variables x and y are connected by the equation ax + by + c = 0. Show that the correlation co-ef...

A: We are given the equation ax+by+c which can be written as below: by=-ax-cor, y=-abx-cb which is the ...

Q: Given that the standard score z is 1.30 with µ= 30 and o = 5.5, find its corresponding random variab...

A: Given mu =30 ,sigma =5.5 ,Z =1.3 x =?

Q: 13. Find the MGF of a random variable whose moments are u, = (r +1)! 2". Ans Mx(t) = (1-2r) 14. If a...

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Q: The life span of Xiomai Mobile cellphones is normally distributed with a mean of 5 years and a stand...

A: Since 1% of the total produced mobiles will be replaced, the life span of mobiles (i.e., X), that is...

Q: ᴛʜᴇ ᴀᴠᴇʀᴀɢᴇ ʟɪꜰᴇ ᴇxᴘᴇᴄᴛᴀɴᴄʏ ᴏꜰ ᴀ ᴄᴇʀᴛᴀɪɴ ʀᴇꜰʀɪɢᴇʀᴀᴛᴏʀ ɪꜱ ₁₀ ʏᴇᴀʀꜱ, ᴡɪᴛʜ ᴀ ꜱᴛᴀɴᴅᴀʀᴅ ᴅᴇᴠɪᴀᴛɪᴏɴ ᴏꜰ ₂ ʏᴇ...

A: ᴛʜᴇ ᴀᴠᴇʀᴀɢᴇ ʟɪꜰᴇ ᴇxᴘᴇᴄᴛᴀɴᴄʏ ᴏꜰ ᴀ ᴄᴇʀᴛᴀɪɴ ʀᴇꜰʀɪɢᴇʀᴀᴛᴏʀ ɪꜱ 10 ʏᴇᴀʀꜱ, ᴡɪᴛʜ ᴀ ꜱᴛᴀɴᴅᴀʀᴅᴅᴇᴠɪᴀᴛɪᴏɴ ᴏꜰ 2 ʏᴇᴀ...

Q: 1) The random variable X, representing the number of nuts in a chocolate bar has the following proba...

A: As per our guidelines we are suppose to answer only one question1)Given  X 1 2 3 4 5 P(X) 1/10 ...