2. Three people working on the same task, namely doing the packaging of goods. The number of items used by each of these people at different times is shown in the table below. People A ABC Hours worked 11.00-12.00 14 19 15 13.00-14.00 13 17 14 16.00 - 17.00 15 21 17 Calculate the variance between "hours worked" (rows)!

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A: Given. According to the U.S. Centers for Disease Control and Prevention, the probability that an…

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A: From the given information we find the t test Statistics.

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A: Given data: Significance level  = 0.05 Claim: Is there enough evidence to reject the claim that the…

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Q: Which statistical measure is the least influence by the existence of outliers in the dataset:…

A: Outliers are extreme value points in the data set.

Q: f(x, y) 2 4 1 0.10 0.15 Y 3 0.20 0.30 5 0.10 0.15 a. Determine the marginal distribution g(x), x =…

A: Farmula used  P(X/Y=y)=P(X,Y=y)/P(Y=y)

Q: The Insure.com website reports that the mean annual premium for automobile insurance in the United…

A: GivenMean(x)=1435standard deviation(s)=170sample size(n)=25sinificance level=0.05

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A: Let X denote the Binomial random variable. Given that X follows Binomial(n = 11, p = 0.2).

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Q: The probability that an iPOD’s battery will need replacing within two years is 21%. A store sold 15…

A: Given that: Probability of success, p = 0.21 Sample size, n = 15

Q: 1. Calculate the mean, variance (s²), standard deviation (s), z-scores, and t-scores of the…

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Q: Stress at work: In a poll about work, 60% of respondents said that their jobs were sometimes or…

A: Given P=0.60 n=14

Q: a) Compute the first quartile ​(Q1​) the third quartile ​(Q3​) and the interquartile range. ​(b)…

A: Given that the data set of five observations 6  5  7  12  15

Q: A binomial experiment with probability of success p=0.4 and n=5 trials is conducted. What is the…

A:

Q: Is there is a significant difference between the mean sales of the two vendors? Test the claim at…

A: Null hypothesis: There is no difference in sales of two vendors. Alternate hypothesis: There is…

Q: For the values 2, 4, 6 the standard deviation is O 1.36

A: Given: The values are: 2, 4, 6       To find: Standard Deviation = ?

Q: f(x, y) y 1 3 1 0.05 0.05 0.00 2 0.05 0.10 03 3 0.10 0.35 0.10

A: The table is as follows       x     f(x,y)   1 2 3 h(y)   1 0.05 0.05 0.1 0.2 y 3 0.05 0.1…

Q: lock on a bank vault consists of three​ dials, each with 30 positions. In order for the vault to​…

A: Given A lock on a bank vault consists of three​ dials, each with 30 positions.

Q: Based on the information, what is the cumulative relative frequency for the 50.2% - 59.7% change in…

A: It is given that Cumulative frequency for class 50.2-59.7 is = 45 Total frequency = 50

Q: State the null and alternative hypotheses for a hypothesis test; indicate whether the hypothesis…

A: Explanation: Null hypothesis is a statement about a population parameter, such as the population…

Q: Due to random variations in the operation of an automatic coffee machine, not every cop is filled…

A: Mean (μ)=9 Standard deviation (σ)=0.6

Q: A binomial experiment has the given number of trials and the given success probability p. n=8, p=0.7…

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Q: QUESTION 10 Provide an appropriate response. A candidate for state representative of a certain state…

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Q: Ho: 18.7 meters, Ha: 18.7 meters, n = 49, x= 19.5 meters, a = 1.4 meters the value of the standard…

A: Given : sample size, n = 49 sample mean, x̄ = 19.5 population standard…

Q: 1. A recent survey stated that Filipinos send an average of 1500 messages per month. To verify this…

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Q: The consumption function captures one of the key relationships in economics. It expresses…

A: Solution Given information is The consumption function captures one of the key relationships in…

Q: Product Calories Sugar   A 340 13.3 B 430 2.8 C 450 25.3 D 500 26.6 E 530 19.2 F 580 26.0 G 590 23.2

A: The given data is Product Calories Sugar A 340 13.3 B 430 2.8 C 450 25.3 D 500 26.6 E…

Q: Newspapers lose their credit when they are found to have published deceptive or misleading news…

A: Given information:Contigency table is given.

Q: A flu shot is administered during flu season. We look at the effect of the shot on individuals who…

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Q: For a standard normal distribution, find: P(0.64 < z < 2.31)

A:

Q: ) A researcher theorizes that there is a linear relationship between the number of pets a person…

A: Given data indicates the number of pets a person owns and their square footage of living space.

Q: Rayleigh random variable has pdf V /20², v> 0 fv(v) = -fo 0, v < 0 Find the transformation that will…

A: Let us define a random variable U which follows standard uniform distribution. U~Uniform0,1 The PDF…

Q: Assume that females have pulse rates that are normally distributed with a mean of μ=76.0 beats per…

A: From the provided information, Mean (µ) = 76.0 Standard deviation (σ) = 12.5 X~N (76.0, 12.5)

Q: Q1/ Grades in statistics class are weighted as follows: Tests are worth 50% of grade, homework is…

A: Given information: Weights given, Test (W1)=50%Homework (W2)=30%Final (W3)=20%Marks obtained, Test…

Q: The Intelligence Quotient (IQ) test scores for adults are normally distributed with a population…

A: Solution-: Given: μ=100,σ=20,n=70 We want to find, P(the mean of sample less than 95)=?

Q: And automotive manufacturer wants to know the proportion of new car buyers who prefer foreign over…

A: Solution

Q: Q4/ The average on a statistics test was 78 with a standard deviation of 8. If the test scores are…

A: Given the  Population Mean is 78 and Standard deviation is 8 of a test score

Q: The UWI Open Campus has commissioned a study to determine how student will perform in ECON3080 based…

A: The UWI Open Campus has commissioned a study to determine how student will perform in ECON3080 based…

Q: (a) Determine the probability P (2).

A: n =  10  p = 0.2  q = 1- p = 1- 0.2 = 0.8

Q: Q6/ Find the probabilities that a random variable having the standard normal distribution will take…

A: Givena)between(0.87 and 1.28)

Q: Example1: For the values of (8, 3, 5, 12, 10) find the arithmetic mean .

A:

Q: √x² +²23,0 < x < 1,0 < y < 2, f(x, y) = elsewhere. 0, b. g(x) = 2x (x + 1/3), h(y) = 1/3 + y/6. a.…

A: E(XY)=∫y∫xxy.f(x,y)dxdy

Q: Dave and Ellen are newly married and living in their first house. The yearly premium on their…

A: The answer is attached below,

Q: Take Quiz

A:

Q: The estimated distribution (in millions) of the population by age in a certain country for the year…

A: To calculate: 1. Sample mean 2. Sample standard deviation

Q: in 1996, 52% of high school teachers felt it was a serious problem that high school students were…

A: Given, true proportion (p)  = 0.52 sample size (n) = 600 x  = 300

Q: = To determine whether car ownership affects a student's academic achievement, two random samples of…

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Q: Suppose that 53% of the population favors a particular candidate IP a Random sample of 55 voters is…

A: The following information has been given: The sample size is n=55. The probability of success is…