A car hire firm has two cars, which it hires out day by day. The number. of demands for a car on each day is distributed as a Poisson distribution with mean 1.5. Calculate the proportion of days on which neither car is used and the proportion of days on which some demand is refused. (e15 = 0.2231). %3D

Q: A certain brokerage house wants to estimate the mean daily return on a certain stock. A random sampl...

A: Given,sample size(n)=14degrees of freedom(df)=n-1df=14-1=13α=1-0.90=0.1α2=0.05t0.05(13)=1.771     (f...

Q: For numbers 7 and 8: The seedlings of a particular type of tree are randomly dispersed in a large ar...

A: We have given that λ = 6 Here we will use Poisson distribution to find the required probability

Q: A researcher surveys 50 individuals in the North Ward of Thunder Bay, and 40 in the South Ward, and ...

A: Given, n1=50 n2=407 p^1=40%=0.40 p^2=30%=0.30 α=0.10 x1=n1*p1=50*0.40=20x2=n2*p2=40*0.30=12

Q: Given the u = 38.27 and o = 3.56, compute the z- score that corresponds to the given score X = 35.52...

A: Given that :  u = 38.27 Standard deviation = 3.56 X = 35.52 By using standard normal distribution  Z...

Q: A certain production process produces items that are 10% defective. Each item is inspected before su...

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Q: In each of the following examples, identify the sampling method being used and explain why. 1. A so...

A: Sampling method can be of 2 types as given below: Probability sampling method Non-probability sampl...

Q: 1. Following data consisting missing observation (X) Commodities Po P1 А 1 10 2 В 1 5 where p and q ...

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Q: Given the table of probability mass function below, solve for the variance. 2 3 4 6. P(X= x) 0.05 0....

A: The probability mass function is, X 1 2 3 4 5 6 P(X = x) 0.05 0.05 0.15 ...

Q: In a recent survey, 80% of the citizens in a community favored the building of a post office. If 15 ...

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Q: The following data are from a research study comparing two treatment conditions. Do the data indicat...

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Q: In a University of Minnesota study, 50 individuals with a rare cancer were followed for 24 months fr...

A: Given the follow up data of 50 individuals with a rare cancer for 24 months from date of diagnosis a...

Q: Use the range rule of thumb to identify the values that are significantly low, the values that are s...

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Q: The compressors used in refrigerators are manufactured by XYZ Co. at three factories at New York , a...

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Q: Example 49. The following data relate to the sizes of shoes sold at a store during a given week. Fin...

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Q: The following data relate to the age of a group of Govt. employees. Calculate the arithmetic mean an...

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Q: Compute the probability of randomly drawing 8 cards from a deck and getting exactly 6 spades.

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Q: A pizza place has pizzas in 2 different sizes, with 7 different flavors for the crust, and 13 differ...

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Q: Which of the following tables can be used as a more exact substitute for the empirical rule? t table...

A: We know that- The Empirical rule is used to determine that 68% -95% -99.7% of the data lies in the i...

Q: Calculate the coefficient of correlation between . and y from the following data : X 1 3 4 6. 7 Y 2 ...

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Q: Use the confidence interval to find the estimated margin of error. Then find the sample mean.   A bi...

A: In this case, the interval for the true mean height is explained as the interval, which contains all...

Q: An Internet survey asked 525 Facebook users whether the amount of time they spent using Facebook was...

A: From the provided information,

Q: A particle moves along the line in a random walk. That is, the particle starts at the origin (positi...

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Q: 11. In a partially destroyed laboratory record of an analysis of correlation data, the following res...

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Q: On a recent quiz, the class mean was 77 with a standard deviation of 4.2. Calculate the z-score (to ...

A: Let X be the random variable from normal distribution with mean (μ) = 77, standard deviation (σ) = 4...

Q: "Given a standard normal distribution with mean =80 and standard deviation = 36, find P(X>76)." A 0....

A: Given that  u = 80 Sigma  = 36 X = 76  Find P(x> 76) = ???  By using standard normal distribution...

Q: Below is a list of all possible outcomes in the experiment of rolling two die. 1, 1 1, 2 1, 3 2, 1 2...

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Q: A nutritionist claims that children 13 to 15 years old are consuming less than the recommended iron ...

A: We have given that,  Population standard deviation (σ) = 4.75 and margin of error (E) = 1 and confid...

Q: A recent study found that 40% of all people over age of 62 wear hearing aids. If a random sample of ...

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Q: 12. You are given the following data pertaining to kilowatt hours of electricity consumed by 100 per...

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Q: In the sketches below, one is the histogram of the values of tickets in a box, and the other is the ...

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Q: 12. You are given the following data pertaining to kilowatt hours of electricity consumed by 100 per...

A: Given data is Consumption (in k watt hrs) 0-10 10-20 20-30 30-40 40-50 No.of users 6 25 36 20 1...

Q: Illustration 11.22. The sum of a set of 100 numbers is 4000 and the sum of its square is 162500 and ...

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Q: The heights of fully grown trees of a specific species are normally​ distributed, with a mean of 69....

A: The mean is 69.5 and the standard deviation is 6.50.

Q: The compressors used in refrigerators are manufactured by XYZ Co. at three factories at New York, an...

A: Let A1, A2, ... , Am be m mutually exclusive and exhaustive events with P(Ai) > 0 for all i = 1, ...

Q: Compute the correlation coefficient. 7 8 9 10 108 102 113 116 153 149 46.143 0.779 0.883 0.117

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Q: Find the conditional PMF of Y , given X = x, for x = 0, 1, ..., 20.

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Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no ...

A: GivenThere is no reasonable preliminary estiamtionAssume p=0.5Margin of error(E)=0.01confidence leve...

Q: (a) 60% of the values are greater than x. enter an appropriate value rounded to 2 decimal places (b...

A: Note: According to Bartleby expert guidelines, we can answer only first question with their three su...

Q: Each spinner is spun once. Find the probability of each (Note that there are repetitions): parts 1 4...

A: Consider the two spinners are spun independently. a) P(A and 1): PA and 1=PA×P1                    =...

Q: Fundamentals of Business Statistics 7. 12 dice were thrown 4096 times and a throw of 6 was reckoned ...

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Q: Women’s heights are normally distributed with a mean of 64.5 and a standard deviation of 2.5 inches....

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Q: The scatter plots of a dependent variable Y against four independent variables X1, X2, X3 and X4 are...

A: Scatterplot is a graphical representation between two variables, where each of the points of the plo...

Q: 7. Let f(x; µ, 0) be the pdf of a normally distributed random variable with parameters µ and o. (a) ...

A: PDF of normal distribution with parameter µ and σ is given by, fx;µ,σ = 1σ2πe-x-μ22σ2 ; x∈R a. Note ...

Q: Does a new diet plan help people lose weight? Twenty people were weighed before starting a 3-month d...

A: Since you have asked multiple question, we will solve the first question for you. If you want any sp...

Q: lustration 11.27. In a certain distribution the first four mo- ments about the arbitrary origin (4) ...

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Q: You conduct a survey of current exposure to organochlorine pesticides and pregnancy status among 500...

A: The given question is based on Epidemiology. Epidemiology involves studying and analyzing various fa...

Q: Table 7.6 Price per Unitin 2015 Units Purchased 2014 2016 Good A $100 $2.00 $1.50 242.50 $150 Good B...

A: Given that  The price per unit for different goods in different years. Base year = 2015   We know th...

Q: Compute the least-squares regression line for the given data set. 4 6. 7. 8.5 8.4 10 11.3 11.9 13.1 ...

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Q: In a certain country, the true probability of a baby being a boy is 0.522. Among the next nine rando...

A: When the same random experiment is repeated a number of times, it's called repeated trials. The outc...

Q: Example 12. Calculate the mean deviation about the mean for the following data: x : 5 15 25 35 45 55...

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