Example 12. Draw a histogram, frequency polygram and frequency curve representing the following data: Daily Wages (in) No. of workers 0-20 20 20-40 50 40-60 90 60-80 38 80-100 15

Q: Consider a data set containing the following values: 92 84 85 93 95 89 86 91   The mean of the…

A: Data is given Deviation from mean also given We have to calculate sample and population standard…

Q: What type of test will I use in the comparative study if I am comparing three or four and then I…

A: If only equality of two means of two different populations are tested, then always two-sample t-test…

Q: QUESTION 1 1) Suppose tha Y is a random variable having an gamma distribution with a = 1, find the…

A:

Q: What is the t ratio of B₂ of in the regression output below? (Report you answer using 2 decimal…

A: Suppose β2 is the slope coefficient of the X2.

Q: Determine the leaves for the given data points in the range of 80 to 89 for this stem leaf plot

A: Given that  The data are 78 , 92 , 82 , 75 , 91 , 95 , 72 , 87 , 63 , 66 , 66 , 72 , 81 , 73 , 74 ,…

Q: A student randomly guesses at 6 multiple choice questions. Find the probability that the student…

A: Given that: Total number of students in a sample, n=6 Let X be the number of correct guesses by the…

Q: The number of earthquakes that occur per week in California follows a Poisson distribution with a…

A: As the question includes 4 sub-parts and not mentioned which sub-parts to be done only three…

Q: A manufacturer makes aluminum cans and longneck bottles. The average diameter of an aluminum can is…

A: Given, A manufacturer makes aluminum cans and longneck bottles. For aluminum cans the average is 4.2…

Q: Using a sample of recent college graduates, Dr. Harrison performs a regression analysis to study the…

A: Regression analysis is used to estimate a model which shows the relationship between the independent…

Q: Question: A farmer wants to know if the mean weight of a bale of wool from this year's shearing…

A: given data μ = 20 year average weight of bales of wool from his farmμ0 = the average weight of bales…

Q: Assuming you have a data matrix X that has n rows and p variables and you know both µ and Σ. How is…

A:

Q: AnswerHow to enter your answer (opens in new window) 2 Points Key: 101 101 pounds Step 3 of 3: What…

A: It is given that the stem and leaf plot.

Q: Explain the difference between a anda and between μ and μ. The quantity is the ---Select---…

A:

Q: and write probabilities using 4 decimal places where possible. If the event has no outcomes type…

A: Data given S=sample space={3,6,9,12,15,18,21,24,27,30} A={6,12,18,24,30} Find (j) A'=?

Q: an example of a discrete quantitative ent grade point average e spent preparing for SAT

A: A variable can be used to characterize a individual quantitative or qualitative characteristics.…

Q: Dr. Crawford is testing memory in lab rats. He hypothesizes that a new drug will improve a rat's…

A: Concept: Hypothesis testing is a procedure of testing claim being made in the population using…

Q: An experiment investigated the effect of length and repetition of TV ads on students choosing to eat…

A: Experiment is the study used to understand the population. It involves some treatments or technique…

Q: following data represent the weights (in grams) of a simple random sample of a candy. 0.92 0.90 0.89…

A: The given data is; 0.92,0.90,0.89,0.93,0.92,0.86,0.93,0.87,0.81,0.90

Q: Consider the following data: 4 6 8 12 16 25 Which of the following statements is correct? X Y Select…

A: Given that    X Y X \cdot YX⋅Y X^2X2 Y^2Y2   4 12 48 16 144   6 16 96 36 256   8 25 200 64…

Q: Suppose that Y₁, Y₂, ..., Ym is a random sample of size m from Gamma (a = 3, p = 0), where 0 is not…

A: Given Xi~ Gamma(ɑ=3, β=θ) ; i=1,2..,m  and random sample.

Q: answer d

A: From the  above parts we have  µx̅ = 155σx̅  = 6.75

Q: e

A: The normal quantile plot is a graphical tool that may be used to determine if a set of data is…

Q: If you use 95% as your confidence level, and provided that all possible samples are taken, it means…

A: Confidence interval is estimated to understand the range where the true population parameter likely…

Q: What is the probability of Sam deciding not to help and Frodo not destroying the ring? 0.12 Given…

A: Given: The probability that Frodo destroys the ring is 0.73 The probability that Sam decides to help…

Q: Assume that you have a sample of n₁ = 8, with the sample mean X₁ =41, and a sample standard…

A:

Q: Time (min) 0 30 60 90 Hiking Elevation (feet) Melissa 120 8,342 9,550 11,239 12,921 12,921 cenario…

A: Given: To check the correct statement, we will go through the statements one by one and validate it…

Q: 2. 1/3 B The data set represents the heights, in centimeters, of ten model bridges made for an…

A: The heights (in centimeters) of the given model bridges are: 13, 14, 14, 16, 16, 16, 16, 18, 18, 19…

Q: Scores on this year's statistics midterm were normally distributed with a mean of 77.6 and a…

A: GivenMean(μ)=77.6standard deviation(σ)=3.4

Q: The purpose of this assignment is to know how to apply probability concepts to evaluate judges’…

A: Hint: Use classical definition of probability to find the required probabilities.

Q: The mean number of hours worked by college students outside the home is approximately (Type an…

A: The data shows the number of hours per week typically work outside the home of 15 college students.

Q: Standard score B) Standardized score C) z statistic

A: Question : When calculating a z score for distribution of means, we refer to the z score as a.....

Q: Find the 94th percentile, P94,  from the following data 1000 1100 1400 1500 1600 1800 1900 2000…

A: Given,sample size(n)=35the given data is already arranged in ascending order.

Q: 2 ΣΕ 1 Χ. B 98% Confidence interval for ß if a random sample is given by 2.4, 4.6, 3.3, 3.1, 4.6,…

A: A quantity is said to be pivotal quantity if it's distribution is free from parameter.

Q: find the five number summary for the data by hand.

A: It is given that the stem and leaf plot of the data. Here, need to find out the five number summary…

Q: testing for Select one: a. 6 b. 7 c. 9 d. 5 O e. 4 pendence Ingency table with rows there ar

A:

Q: A study examined brain size (measured as pixels counted in a digitized magnetic resonance image…

A: We know  The value of correlation coefficient decide (association and direction) for correlation.…

Q: 3 231 233 238 257 263 275 285 285 286 302 311 313 314 319 323 326 328 336 339 362 364 366 378 390…

A: The given data set is 203 231 233 238 257 263 275 285 285 286 302 311 313 314 319 323 326…

Q: Sacks of grain have an average weight of 120 Kilograms. It is found that 10% of the bags are over…

A: Let X denote the weight of sacks of grain. Given that X follows N(mean = 120, SD), then Z = (X -…

Q: Which of the following is TRUE? A. As the number of observations increases, tcrit also increases B.…

A: Various statistical techniques, such as the z-test, t-test, chi-square test, and f-test, are…

Q: Compute the least-squares regression line for predicting y from x given the following summary…

A: given data x¯ = 6y ¯ = 30.2sx = 2.3sy = 1.8r = 0.40we have to compute regression equation

Q: Classify the following graph as a cross-sectional study or a time-series study. Days at Temperature…

A: Given that We have to find The given graph has cross sectional study or Time series study...

Q: A golf ball is selected at random from a golf bag. If the golf bag contains 4 brown ​balls, 6 orange…

A: Given  Brown balls = 4 Orange Balls = 6 Black balls = 11 Now we will calculate total balls inside…

Q: A student selects 49 batteries from a population with a mean mass value of 72±7.0 g (u±s). She…

A: Given information: μ=72, σ=7x¯=74, n=49

Q: The following data represent the times in minutes required for 18 co-workers to commute to work. V…

A:

Q: The times required by 3 workers to perform an assembly-line task wen recorded on five randomly…

A: Given data: Hank Susan Joseph 8 8 10 10 9 9 9 9 10 11 8 11 10 10 9 Significance…

Q: 36 Consider the following data: 34 49 39 47 5231 1564 51 25 36 14 19 17 12 44 41 Number of classes…

A: Given: Sample size N = 28 Formula Used: The number of classes n = 1+3.3log(N) Class length =…

Q: McDonald's conducted research about the proportion of their egg muffin buyers who also order a cup…

A:

Q: Show that at least ten of any 64 days chosen must fall on the same day of the week. Please specify…

A: We need to proof at least ten of any 64 days chosen must fall on the same day of the week.

Q: Find the 25th, 50th, and 75th percentile from the following list of 33 data 4 10 12 15 19 23 27 31…

A: Given: n = 33 Formula Used: Percentile rank = P(n+1)100

Q: There are 11 employees in a particular division of a company. Their salaries have a mean of $80,000,…

A: Given Information: Number of employees = 11 Mean is $80,000 Median is $66,000 The standard deviation…