6 The distance travelled to and from work each day by employees in a central business distric is modelled by a normal distribution with mean 16 km and standard deviation 5 km. a Find the probability that a randomly chosen employee travels between 13 km and 15.3 km each day. b 13% of employees travel more than x km each day to and from work. Find the value of x.

Q: To test Ho: μ = 100 versus H₁: μ#100, a simple random sample size of n = 18 is obtained from a…

A: Null Hypothesis H0 μ=100  Alternative Hypothesis Ha: μ≠100 n=18, s=8.2, sample mean =104.5  We have…

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A: Sample size n =60 Sample mean=24.5 Population standard deviation =5.25

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A: Suppose the variable of interest is x. It is given that; x follows normal distribution with mean µx…

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A: Answer: From the given data, X = 280 n = 580

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A: Several students were tested for reaction times (in thousandths of a second) using their right and…

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A: Answer: From the given data, X      :   1           2          3         4          5 P(X)  :  0.2…

Q: Bob is a photographer who sells prints on consignment. Each week during the summer, Bob checks the…

A: Week Sold 1 15 2 10 3 11 4 16 5 18 6 14 7 8 8 9

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A: n=25, s=8, sample mean X̄=54, population mean μ=50

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A: Answer: From the given data, Sample size (n) = 25 Sample mean x¯ = 72.21 Standard deviation (s) =…

Q: Find the mean for the given data set 34,56,48,58,12,39,27,49,33,36

A: 34,56,48,58,12,39,27,49,33,36

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A: Total members=10 Members selected=7

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A: a) The likelihood function for a random sample x1,…,xn from the Lévy distribution with parameter θ…

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A: Given values: 36, 45, 50, 65, 70, 80, 85, 140, 190, 203, 260, 375, 500, 1500, 2750

Q: Researchers wish to carry out a test of the null hypothesis that the mean of a certain population is…

A: The null and alternative hypothesis are H0 : µ = 760H1 : µ ≠ 760  Sample size (n) = 48  test…

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A: Let Nt be the Poisson process with rate λ, and let Y1, Y2, Y3, ... be i.i.d. exponential random…

Q: 7 8 9 10 data 11 12 13 14 a Based on the boxplot above, identify the 5 number summary

A: Given Using box plot: minimum value =7 maximum value =14 Quartile [Q1] =8 Quartile [Q2] =10 Quartile…

Q: Income ($1000s) Household Size Amount Charged ($)                 54 3 4,016                 30 2…

A: Consider the given data: Income Household Size Amount Charged 54 3 4,016 30 2 3,159 32 4…

Q: "A continuous probability distribution that is useful in describing the time, or space, between…

A: Here For  Exponential distribution

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A:

Q: Solve the problem. Find the critical value x corresponding to a sample size of 19 and a confidence…

A: Sample size n =19 99% confidence level

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A: Answer:- Given, Sample size, n = 12 Probability of success on a trial, p = 0.45 Using formulas,…

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A: H0 : p=0.85 H1 : p ≠ 0.85 p̂ =0.78 n=131 α =0.02

Q: Consider the given discrete probability distribution, X : 1 2 P(X): 0.2 0.3 Calculate the P(X>2) 3…

A: Answer:- Given the discrete probability distribution is,  X 1 2 3 4 5 P(X) 0.2 0.3 0.1 0.2 0.2

Q: correlation coefficient

A:

Q: (e) How much more likely to suddenly fail is a light bulb operating after 120 days compared with a…

A: From the above given data the following solution is provided below:

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Q: n Z = -1.04

A: The area of the shaded region is given as follows:

Q: A survey of  1000  U.S. adults found that  34%  of people said that they would get no work done on…

A: Sample size n=1000 Sample proportion p^=0.34

Q: 1950, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you on…

A: In 1950, Total adults n1=1100                       x1=374 In recent year…

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A: Basketball Baseball Soccer Football North 89 17 26 18 Central 73 37 30 31 South 67 22 24 24…

Q: 0.8 2.2 4.9 6.4 7.9 9.5 11.1 function that models the data, with x equal to the number of years…

A: Solution a: Hence, the exponential function that models the data is y=1.045(1.067)^x.

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A: r = –0.21

Q: 3.7 6.9 3.8 8.5 8.4 5.2 8.6 6.1 -1.2 4.6 2.3 5.8 (a) Find x for the preceding data. (Round your…

A: a) The value of x (average) for the preceding data is obtained as given below:…

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A: a hypothesis is rejected at the 0.025 level of significance what will be decision at 0.01 level?

Q: 3. Suppose that a quality characteristic is normally distributed with specifications at 110 +5. The…

A: Mean=μ=110 Standard deviation σ=2

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A: Stimulation No Stimulation 12 8 7 7 3 4 11 14 8 6 5 7 14 12 7 5 9 5 10 8

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

Q: For the following data sets A and B, find the mean, median and mode. Use Excel built In functions…

A: We have given the data sets A and B A     B 58     0.38 22     0.55 27     2.54 29…

Q: Question 15 Complete the following statements. In general, % of the values in a data set lie at or…

A: Here if we say Xth percentile it means below that the point X% of data lies

Q: Suppose we are about to draw a simple random sample of 25 observations from a 8 and u normally…

A: μ=50 , σ=8, n=25

Q: Television viewing reached a new high when the global information and measurement company reported a…

A: Answer: From the given data, Mean (μ) = 7.56 Standard deviation(σ) = 2.8 X follows normal…

Q: (c) What is the median failure time of a light bulb? (d) What is the hazard rate?

A: From the above given data the following solution is provided below:

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A: In this case, a study is performed to define the attitude of physicians towards drug screening in…

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A: No, adding up all the values in the Size Premium Across Regions (SMB) column will not give you the…

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A: Sample size n =100 Favorable cases x =51 Sample proportion p^=x/n  =51/100 =0.51 NOTE:- According to…

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A:

Q: Find the Phat and q - hat for the given data, X = 258 and n = 564 Round to three decimals CS Scanned…

A: Answer:- Given, x = 258 and n = 564 Using formula,  P-hat = (x/n)  q-hat = (1 - P-hat)

Q: It is claimed that an industrial safety program is effective in reducing the loss of working hours…

A:

Q: A hypothetical study concerned with estimating th187e amount of marijuana use per year among a…

A: Confidence level=0.95 Sample mean, x¯=5.3 Sample standard deviation, s=4.3 Sample size, n=110