Using the grouped data below, find the variance. Use the formulas and steps given to find the variance of the grouped data.

Q: A personal fitness company produces both a deluxe and a standard model of a smoothie blender for…

A: Given: n = 7 α = 0.05 Formula Used: Test-statistic t = d-μdsdn Confidence interval = d ± t*sdn

Q: An electronic product contains 35 integrated circuits. The probability that any integrated circuit…

A: There is total 35 integrated circuits.

Q: Samples of rejuvenated mitochondria are mutated (defective) in 1% of cases. Suppose 12 samples are…

A: Samples of rejuvenated mitochondria are mutated in 1% of the cases. So, probability that a randomly…

Q: How many posible 5-digit zip codes exist if the first number must be from 3 and 9, the last number…

A: We have given that 5-digit zip codes exist if the first number must be from 3 and 9, the last number…

Q: The transition matrix for a Markov chain with three states is (0.3 0.5 0.21 0.6 0.3 0.1 0 01 For a…

A: The given transition matrix for a Markov chain has three states: { state 1, state 2, state 3} The…

Q: man

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Q: Suppose X ~ N(6, 2). What value of x is two standard deviations to the right of the mean?

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Q: For the following situation, find the mean and standard deviation of the population. List all…

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Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 104 and a standard deviation…

A: Here Given , mean = 104  standard deviation = 14  Here use empirical rule .

Q: Find the population standard deviation of these numbers: 22, 19, 25, 16, 20 (round to two decimal…

A: Given numbers(x); x x2 22 484 19 361 25 625 16 256 20 400 ∑x=102 ∑x2=2126

Q: (B) What would be the estimated price per computer for a demand of 11,000 computers? For a demand of…

A: The given price-demand function px=2400-40x.

Q: distance traveled per truck per year is normally​ distributed, with a mean of 60 thousand miles…

A: Let X be the random variable from normal distribution with mean (μ) = 60 and standard deviation (σ)…

Q: The table below shows the number of employees within a small construction company classified…

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Q: 2. Consider the following hypothesis test: Η:μ280, Η :μ <80, A sample of 160 is used and the sample…

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Q: Income (in I 16,000- 8000 Nevada Vermont New Mexico Florida Massachusetts Kentucky State Step 2 of…

A: The question is about graphical representation of data Given : From graph :   To find : Highest per…

Q: The Los Angeles Times regularly reports the air quality index for various areas of Southern…

A: For the given data Find all the required Range =? IQR =? Sample variance =? Sample standard…

Q: Let X denote the vibratory stress (psi) on a wind turbine blade at a particular wind speed in a wind…

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Q: Note. Please give me correct and detailed information regarding my question. I have posted my…

A: Given: σ2 = 0.015 n = 25 s2 = 0.029 Formula Used: Test-statistic χ2 = (n-1)s2σ2

Q: A clinic took temperature readings of 250 flu patients over a weekend and discovered the temperature…

A: Given that Mean =101.10 °F  Standard deviation =0.9070 °F  Sample size =250 We have to find a..The…

Q: q6-  The least-squares estimators follow a normal distribution if the sample size is large, even if…

A: Answer is (C)  Least squares principle

Q: Explain the meaning of the accompanying percentiles. ​(a) The 5th percentile of the head…

A: Introduction In statistics, the percentile is a measure of the position. Let the percentile be…

Q: The following data represent the weight​ (in grams) of a random sample of 13 medicine tablets. Find…

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Q: Let X₁, X₂, X3,..., Xn be a random sample of size n from the normal distribution N(μ, σ²). i) State,…

A: Given Xi ~ N(μ, σ2) ; i=1,2,..,n and random sample.  Note: according to Bartleby guidelines expert…

Q: Write the arithmetic sequence 10, 13, 16, 19, ... in the standard form: an

A: Given: The given arithmetic sequence = 10, 13, 16, 19, ... Formula Used: an = a + (n-1)d

Q: Step 1 of 2: Find the lowest per capita personal income for the six states shown. Answer How to…

A: The bar chart of the per capita personal incomes for six states are given.

Q: Example 3. Present the following data by horizontal bar diagram. Bangalore Hydradad 11 9 City:…

A: Data given City Trichy Bangalore  Hyderabad  Mysore Ooty Population (Lakh) 8 9 11 7 3

Q: 5. Suppose the probability density function of the magnitude X of a dynamic load on 3 +-x 0<x<2 8 a…

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Q: Suppose that we will randomly select a sample of 64 measurements from a population having a mean…

A: It is given that  Mean, μ = 20 Standard deviation, σ = 4 Sample size, n = 64

Q: A random variable X is uniformly distributed in the interval (-л/2, π/2). Xis transformed to a new…

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Q: Based on the properties of the covariance and the correlation, which of the following is correct?…

A: Given: Relationship between varience, covariance and correlation coefficient?

Q: Listed below are the amounts (dollars) it costs for marriage proposal packages at different baseball…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: I hope you’re well. We have a research report/proposal due for Statistics next month. We were told…

A: Given information:   Sports Participation Treatment x No Sports Participation Treatment y 1 85…

Q: Which action is not related with data-mining, p-hacking, data-snooping or multiple testing? Select…

A: The action is not related with data-mining, p-hacking, data-snooping or multiple testing is

Q: Find and interpret the percentile rank of a test score with a value of 150.   A test score of 150…

A: The given test score is 150.

Q: For a Gaussian random variable with = 0 and ₁=1, what is P(| X > 2) and P[X>2]?

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Q: The following data represent the results from the specific gravity (S.G.) test performed in a soil…

A: Here we have to find the greater than cumulative frequency distribution table. Please find the…

Q: describe the relationship. Is it a strong, moderate or weak - positive or negative - linear or…

A: Introduction A scatterplot shows that how much one variable gets affected by another variable.

Q: What does it mean when you have standard deviations of 27 35 and 32 and its effect on the validitity…

A: Standard deviation (SD) is a measure of dispersion. It measures how the data are spread around the…

Q: 1 1 Given that P(A or B)= P(A) = 4 1/14 and P(A and B)=, find P(B). OA. OB. 1318 32 7 3105100 OC. 3…

A: GivenP(A or B)=12P(A)=14P(A and B)=18

Q: technology managers. Determine the number of possible ways to form this committee if one particular…

A: Here given ,  A construction company includes 15 engineers, 4 accountants and 5 information…

Q: The brain volumes (cm³) of 20 brains have a mean of 1115.7 cm and a standard deviation of 124.1 cm³.…

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Q: Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons…

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Q: An executive's telephone log showed the lengths of 60 calls initiated during the last week of July.…

A: Solution-: For given data we want to find  (a) Use excel to find quartiles: First quartile, Median,…

Q: Find the nth term of the geometric sequence whose initial term is a1 9 and common ratio is 3. Your…

A: The initial term is a1=9 and common ration is 3.

Q: Determine and interpret the interquartile range.   The interquartile range is   crimes per​ 100,000…

A: Given that  Q1=271.8​   Q2=387.9​   Q3= 529.1

Q: Answer the following questions: a. A hand of 5-card draw poker is a simple random sample from the…

A: Introduction: A standard deck of cards has 52 cards.

Q: x+y Suppose the joint probability distribution of X and Y is given by f(x,y) = for x = 5, 6, 7, 8; y…

A: Ans#- The joint probability distribution of X and Y is           f(x, y) = x +y150,   for x = 5, 6,…

Q: * In building materials laboratory, it has been observed that a failure proportion of concrete cubes…

A: Let X denotes the number of cubes fail in the test. Given that n = 300, p = failure proportion =…

Q: Hi there, I hope you're well. I have attached the results of a chi-square goodness of fit test for…

A: Given information:   Sports Participation Treatment x No Sports Participation Treatment y 1 85…

Q: The state would like to evaluate the usefulness of a program to randomly test high school athletes…

A: Here, given 20 schools from a state and randomly selected 3 athletes from each school.