1. States that experience four seasons tend to have more issues with potholes because of the changes in tem-

Q: n a the normally distributed variable X with mean = 15 and standard deviation = 2.5, find: The…

A: X is randomly distributed with a mean of 15 and a standard deviation of 2.5; μ=15σ=2.5

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Q: Exercise 4. Suppose we test Ho: P = 0.35 versus Hap # 0.35 and the random sample of n-64 gives a…

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Q: Let S be the universal set, where: S = {1, 2, 3, ..., 18, 19, 20} Let sets A and B be subsets of S,…

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Q: The Scholastic Aptitude Test (SAT) contains three areas: critical reading, mathematics, and writing.…

A: Please find the explanation below. Thank you.  Here Null hypothesis is…

Q: n₁ Evaluate the following formula for p₁ - P₂ = 0, x₁ = 64, x₂ = 11, n₁ =311, n₂ = 296, p₁…

A: Given: P1-P2 = 0, X1 = 64, X2 = 11, n1=311, n2 = 296

Q: Consider a random variable X, with the following empirical pmf. Value X₁ 1 -1 2 O Probability p(x₁)…

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Q: c) A research conducted by SSTA022 Class representative at the University of Limpopo indicates that…

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Q: x>0 f(x) = 8² elsewhere Find the value of c such that an interval from x to cx is a (1- a)100%…

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Q: i) Derive the standard error of ß, se(B) = 0.0009, using MLE approach. ii) Find an approximate 95%…

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Q: If X is normally distributed with mean μ and variance o2, it is generally described as X~ N(μ,0²).…

A: From the provided information, Mean (µ) = 2 Variance (σ2) = 9 X~N (2, 9)

Q: error. If the official has initial estima

A: 70% of the people in Limpopo support the economic strategies; p=0.70 The margin of error is 3% with…

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Q: Use the following results from a test for marijuana use. Among 153 subjects with positive test​…

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Q: In a data set with a range of 66.5 to 121.4 and 200 observations, there are 138 data points with…

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Q: Suppose Xhas the probability distribution given in the table. Given that EU-2.8, find a and b 2…

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Q: Q3) a) There are two boxes; the first one has 5 red balls and 7 blue balls while the second box has…

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Q: A survey was given asking whether they watch movies at home from Netflix, Redbox, or a video store.…

A: Given,55 only use Netflix 65 only use Redbox 9 use only a video store and Redbox  15 only use a…

Q: Identify the symbols used for each of the following: (a) sample standard deviation; (b) population…

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Q: llowing and justify your answer:

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Q: Year Mileage 3,050 ing average, the forecast for year 6 3775 miles (round your response to the…

A: Hi! Thank you for the question, As per the honour code, we are allowed to answer three sub-parts at…

Q: How many students owned a dog and a cat, but not a bird? e)How many students owned a cat or a bird,…

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Q: Problem 1 Let random variables X and Y follow the joint pdf described as follows: X 0 1 2 0 1/7 1/7…

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Q: g. to left of Z is 33% h. to the leftt of Z is 0.43% i. top 15% j. lowest 5%

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Q: What percent of all small companies receiving questionnaires responded? a. 12.5% b. 20.8% c. 33.3%…

A: Small Medium Large Total Yes 125 81 40 246 No 75 119 160 354 Total 200 200 200 600

Q: A popular theory is that presidential candidates have an advantage if they are taller than their…

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Q: Which of these statements correctly describe examples of qualitative and quantitative data? Select…

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Q: Problem 6. A pharmaceutical company is evaluating the effectiveness of a new drug to treat insomnia.…

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Q: A survey showed that 8% of Internet users age 18 and older report keeping a vlog. Referr to the…

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Q: 3 The brain volumes (cm³) of 20 brains have a mean of 1074.5 cm³ and a standard deviation of 129.5…

A: Given data,n =20x¯   = 1074.5 cm3s   = 129.5 cm3standard deviation and range rule of thamb…

Q: b) Suppose that a South African Broadcasting Corporation (SABC) official wants to conduct a survey…

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Q: In how many ways can a caravan of 8 tricycles from Pulo be arrabged in a circle?

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Q: The table shown to the right gives the national average pupil-teacher ratio in public schools over…

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Q: 4. What are the standard deviation and variance of the variable "age"? 5. Construct a relative…

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Q: The following data on x = score on a measure of test anxiety and y = exam score for a sample of n =…

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Q: b) Let X to be a random sample from a distribution with a probability density function given by f(x;…

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Q: alculate the median of the data shown, to two decimal places, 24.4,11.1,2.1,29,8.7,6.9,6.6,1.1

A: The given data is 24.4,11.1,2.1,29,8.7,6.9,6.6,1.1

Q: What is the standard deviation of a variable with the probability distribution X 16 32 p(x) 0.1 0.9…

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Q: Based on t and p values, which of the following is TRUE? A. The slope and the y-intercept are…

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Q: The following tables presen and for the 2017-2018 seas turned on during the progra 2007-2008 21.7…

A: Hi! Thank you for the question, As per the honour code, we are allowed to answer three sub-parts at…

Q: The percentage of heights that are from 67.95 to 71.95 inches is: ____. b. The percentage of heights…

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Q: Find the 14th percentile, P14,  from the following data 1100 1200 1300 1500 1900 2100 2200 2300…

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Q: Variable Label N Xx y X Mean Std Dev Minimum Maximum 'speed' 19 39.7368421 15.7650884 15.0000000…

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Q: Suppose that a South African Broadcasting Corporation (SABC) official wants to conduct a survey in…

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Q: C) A research conducted by SSTA022 Class representative at the University of Limpopo indicates that…

A: In hypothesis testing, there are always two hypotheses. These are null and alternative hypotheses.…