Why is it important to maximize the degree to which samples and data used to train or build algorithms are representative of the population?
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Q: Sind the range of weight of 10 students from the following : 41 11 14 65 73 84 53 35 71 55
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A: Given: Whether X follows the binomial distribution or not
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A: A box contains 3 red marbles and 5 blue marbles. Two marbles are taken at random without replacement...
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Q: ID Age (yrs) Sex: 0: male 1: female Height (in) Family Income status: Low (0), Middle (1), Hig...
A: Range :The range formula of data set is defined as Range = Maximum value - Minimum value Inter...
Q: You are given the following information: (i) (Tä)r:10 = 40.0 (ii) är:10 = 7.0 (iii) i = 0.04 (iv) qa...
A: Given ?a¨x:10=40 a¨x:10=7 i=0.04 qx=0.02
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Q: Use the confidence interval to find the estimated margin of error. Then find the sample mean.
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Q: He/She/Them ~ According to a recent article from the Pew Research Center, “On the Cusp of Adulthood ...
A: We have given that Sample size n =200 Favorable cases x =68 Sample proportion p^=x/n =68/200 =0.34
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Q: Suppose that the quarterly sales levels among health care information systems companies are approxim...
A: Given : μ = 10 σ = 1.1
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Q: "Given a standard normal distribution with mean =113 and standard deviation = 43, find P(X<58)."
A: Given: random variable x from normal with mean =113 and standard deviations=43 then find the proba...
Q: The mean of 200 items is 48 and their Standard Deviation is 3. Find : (i) The sum of all the items, ...
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Q: Given the table of probability mass function below, solve for the variance. 2 3 4 6. P(X= x) 0.05 0....
A: The probability mass function is, X 1 2 3 4 5 6 P(X = x) 0.05 0.05 0.15 ...
Q: 9) How many people N should you poll to guarantee the actual error between ĝn and q is less than e, ...
A: 9. From the part 8, q^N follows Normal distribution with Eq^N=q and variance Eq^N=4*p^N1-p^NN. Confi...
Q: Automobile repair costs in Georgia continues to rise with an average cost now at $367 per repair (Ge...
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Q: 5. [Facebook An Internet survey asked 525 Facebook users whether the amount of time they spent using...
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Q: Scenario: The Department of Health is conducting random drug testing in a barangay in relation to th...
A: Probability sampling: It involves random selection, allowing us to make statistical inferences about...
Q: Given the u = 38.27 and o = 3.56, compute the z- score that corresponds to the given score X = 35.52...
A: Given that : u = 38.27 Standard deviation = 3.56 X = 35.52 By using standard normal distribution Z...
Q: Doubling the size of the sample will Reduce the standard error of the mean to about 70% of the its c...
A: Given: Doubling the size of the sample will: Reduce the standard error of the mean to one-half its c...
Q: (a) F(x). O F(x) = 1 + e0.1-x O F(x) = 1 – e0-1-x O F(x) = 1 – e-0.1-x O F(x) = 1+ e-0.1-x eTextbook...
A: We have given that the waiting time in minutes has probability density function f(x) = 0.1*e0.1x
Q: X be a random variable such that P(X)=0.25 for x=1,2,3,4. What is P(
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Q: 1. X follows a normal distribution with mean 1.4 and standard deviation of 0.4. If X has a correspon...
A: As per our guidelines we are suppose to answer only one question. Given,mean(μ)=1.4standard deviatio...
Q: In each of the following examples, identify the sampling method being used and explain why. 1. A so...
A: Sampling method can be of 2 types as given below: Probability sampling method Non-probability sampl...
Q: What is the t test P Value for this Data
A: Given - There are 20 observations in Female and 10 observations in Male n1 = 20, n2=10 Mean of Fe...
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Q: Problem 1: Asking Embarrassing Questions, Politely When doing polling, for instance to figure out ho...
A: 5. Given Information: X=70N=100P^N=XN=70100=0.7
Q: Enter textA certain drug is claimed to be effective in curing colds. In a n experiment on 164 people...
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Q: A scatter plot of data on number of calories, z, and amount of sodium content in milligrams, y, for ...
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Q: Problem 15. Draw a histogram from the following data : Mid Value 15 25 35 45 55 65 75 Frequency 10 2...
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Q: In a recent awards ceremony, the age of the winner for best actor was 28 and the age of the winner f...
A: GivenThe age of the winner for best actor was 28 withMean(μ)=42.3standard deviation(σ)=8.4The age of...
Q: Calculate the semi-interquartile range and quartile coefficient from the following : Age in years No...
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A: For the given data construct frequency table and histogram
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Q: iv. Carefully define the null and alternative hypotheses of the χ2 test underlying the generation of...
A: The claim is that workers are for or against mandatory vaccination.
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Q: A. Find the mean of the set of data below and construct a sampling distribution, without replacement...
A: Solution-: Given data: xi: 5,8,11,14,17,20 (a) We find the population mean? (b) Complete the given t...
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A: It is given that Sample size n = 9 Sample mean M = 208 Sample SD = 7.9 The critical value of t at df...
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A: Given: Probability of success(p)=55%=0.55Number of trials(n)=12 Consider, X be the random variable t...
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A: *Answer:
Q: Given the table of probability mass function below, solve for the standard deviation. 3 4. 6. P(X= x...
A: We have to find standard deviation of given probability distribution. Formula : σ= ∑( x - μ)2P(x) w...
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A: The chi-square test for proportion is a nonparametric test.
Q: Fill in the blank. The complement of "at least one" is The complement of "at least one" is
A: Complement :-Complement is the opposite of the event happening i.e., not happening
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A: Note: According to Bartleby expert guidelines, we can answer only first question with their three su...
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Q: bag has five balls labeled A, B, C, D, and E. One ball will be randomly picked, and its letter will ...
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Q: Give any example of a probability distribution over x and y for a classification problem on the real...
A: Bayes Theorem If A1,A2,...An are disjoint sets whose union is the sample space 'S' and E is any even...
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- How many indicator variables would be included in the model in order to prevent the least squares estimation from failing?Suppose a special type of small data processing firm is so specialized that some have difficulty making a profit in their first year of operation. what is the value of k?A wood products firm uses leftover time at the end of each week to make goods for stock. Currently, there are two products on the list of items that are produced for stock: a chopping board and a knife holder. Both items require three operations: cutting, gluing, and finishing. The manager of the firm has collected the following data on these products: ------------------------------------------------------- Time per unit (minutes) Profit ---------------------------- Item per unit Cutting Gluing Finishing ------------------------------------------------------- Chopping board $ 4 1.4 5 12 Knife holder $ 6 1.8 13 3 ------------------------------------------------------- The manager has also determined that during each week 120 minutes are available for cutting, 650 minutes are available for gluing, and 360…
- The dataset below was collected from a survey to determine whether CFT development in the island can be used as a strategy for the sustainable management and utilization of the fishery and aquatic resources in small islands. It shows the monthly income (in thousand pesos) estimated by 200 randomly selected fishers in Guimaras according to the type of fishers (i.e., the income source of fishers is solely fishing or they have alternative/supplemental livelihood such as island hopping services, sari-sari store ownership, fish value adding and/or vending, souvenir selling, carpentry, as construction worker, farming and tour guiding) and their perceived benefit from CFT development in the island. From this dataset and using = 0.05, is there a significant difference in estimated monthly income due tofisher type? How about due to the CFT perceived benefit? How about due to the interaction between fishertype and the perceived CFT benefit?a. Analyze manually and assume that the…Cancer of the colon and rectum is less common in the Mediterranean region than in other Western countries.The Mediterranean diet contains little animal fat and lots of olive oil.Italian researchers compared 1953 patients with colon or rectal cancer with a control group of 4154 patients admitted to the same hospitals for unrelated reasons.They estimated consumption of various foods from a detailed interview, then divided the patients into three groups according to their consumption of olive oil.The table presents some of the data. The researchers conjectured that high olive oil consumption would be more common among patients without cancer than among patients with colon cancer or rectal cancer.What do the data say?A researcher wants to conduct an experimental study on the effect of learning strategies (cooperative and conventional) and learning interest (low, medium, and high) on learning outcomes. The total number of research samples is 90 students and each cell is 15 students. You determine the research data on the learning outcomes yourself. Interpret the results of the research data analysis.
- The datafile Gestation06 lists the average gestation period (in days) and longevity (in years) for a sample of animals, as reported in The World Almanac and Book of Facts 2006.Use the least squares line to calculate the fitted value and residual for a polar bear. [Hint: First, find the polar bear's longevity and gestation period in the datafile.]The University has provided you with a dataset relating to 1,000 former students. Of a long list of variables in the data, one variable is IPi, which has a value of 1 if the i th student undertook an industrial placement and 0 otherwise. In modelling the impact of a range of student characteristics on the probability of an individual student under-taking an industrial placement: Explain why an Ordinary Least Squares model is inappropriate and suggest an alternative approach.Compute the least-squares regression line for the given data set.
- Calcium is the most abundant mineral in the human body and has several important functions. Most of the body calcium is stored in the bones and teeth, where it functions to support their structure. Recommendations for calcium are provided in Dietary Reference Intakes, developed by the Institute of Medicine of the National Academy of Sciences. The recommended adequate intake (RAI) for calcium for adults (ages 19-50) is 1000 mg per day. A random sample of 18 adults with incomes below the poverty level gave the following calcium intakes:886 633 943 847 934 8411193 820 774 834 1050 10581192 975 1313 872 1079 809Assume the population standard deviation for daily calcium intake for adults with incomes below the poverty level is 188mg.At the 0.05 level of significance, does the data provided above provide evidence to suggest that the mean calcium intake of all adults with incomes below the poverty level is less than the RAI pf 1000mg per day? Step 1: Define the parameter & setup the…A developmental psychologist interested in the attachment between full-term and pre-term infants and their mothers conducted a study to measure infant willingness to explore a strange environment by counting the number of toys infants handled during a five minute interval. Four groups of infants, two comprised of full-term infants and two of per-term infants, were observed both when their mothers were present and when their mothers were absent. The data is presented in the table that follows: Baby Birth Condition | Mother 1 # of Toys (toys) Identify one of the independent variables: Full-term Present Present 2 Full-term 6. 3 Full-term Present Present Full-term Full-term Full-term Full-term Full-term 4 5 Absent 6. 6. Absent 4 Absent 5 Absent Identify the other independent variable: 7 4 9. Pre-term Present 6. 10 Pre-term Present 7 11 Pre-term Present 5 12 Pre-term Present 4 Identify the dependent variable: 13 Pre-term Absent 3 14 Pre-term Pre-term Pre-term Absent 4 15 Absent 4 16 Absent…One variety of corn is genetically modified to produce chemicals for defense against predators. The standard corn contains the same standard genotype, but without genetic modification for the chemicals. The two types of corn are then planted in randomly placed adjacent plots across a single field. The amount of predators that are present when the corn has matured are then recorded. The data that was recorded of the predators present among each type are listed. Has genetic alterations decreased the amount of predators for the altered genotype? Normality tests for the populations of both contain a p value less than 0.05. The given alpha is 0.05 Modified Corn (20, 18, 26, 23, 17, 23, 22) Standard Corn (89, 64, 102, 96, 56, 77, 84, 59) use an F test to determine if the variance between the 2 lists are different. Based on this result, state the correct 2 sample parametric test to be used. State the null and alternative. Show calculations while rounding to two decimal points.What is the…
