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Statistics question and answers for July 24, 2023

Q the visit of a customer at a restaurant follows a Poissonprocess with a rate of 3 arrivals per week. A day with no visits tothe restaurant is called a risky...

Q In a box of 5 balls, 2 are red and 3 are blue. Twoballs are randomly selected (without replacement). Let X be thenumber of red balls in the two...

Q Answer IN R CODE please. Using the data below,Create a scatterplot of y vs x (show this) andfit it a simple linear regression model using y as the response andplot...

Q Answer IN R CODE to get the following. Using the data below,Create a scatterplot of y vs xFit a simple linear regression model using y as the responseand plot the...

Q 1) Suppose that you have $10,000 to invest and the bank offeryou the following options:A: Interest rate of 8.5% compounded quarterly.B:Interest rate of 8.3% compounded monthly.C:Interest rate of 822% compounded...

Q A random sample of 9 recently sold homes in a local marketcollects the list price and selling price for each house. Theprices are listed below in thousands of dollars. A...

Q A nutritionist wants to determine how much time nationallypeople spend eating and drinking. Suppose for a random sample of1064 people age 15 orâ€‹ older, the mean amount of time spent...

Q Data from the past shows that on average, a ready-mixed concreteplant receives 100 orders for concrete every year. The maximumnumber of orders that the plant can fulfill each week is...

Q Suppose that Y1 ,Y2 ,...,Yn isa random sample from distribution Uniform[0,2].Let Y(n) and Y(1) be the orderstatistics.(a) Find E(Y(1))(b) Find the density of (Y(n) âˆ’ 1)2(c) Find the density of...

Q Let Y 1 ,...,Y n be a sample from thedensity f(y) = Î» 2 ye âˆ’Î»y , y > 0 where Î»> 0 is anunknown parameter.(a) Find an estimator 'Î»...

Q A consumer research organization states that the mean caffeinecontent per 12-ounce bottle of a population of caffeinated softdrinks is 37.8 milligrams. You find a random sample of 48 12-ouncebottles of...

Q The level of various substances in the blood of kidney dialysispatients is of concern because kidney failure and dialysis can leadto nutritional problems. A researcher performed blood tests onseveral dialysis...

Q There are two ways for a concrete truck to go from a ready-mixedconcrete plant to the construction site. The first way is direct,for which the mean and standard deviation of...

Q Data from the past shows that on average, a ready-mixed concreteplant receives 100 orders for concrete every year. The maximumnumber of orders that the plant can fulfill each week is...

Q A statistics teacher wants to see if there is any difference inthe abilities of students enrolled in statistics today and thoseenrolled five years ago. A sample of final examination scores...

Q A teacher instituted a new reading program at school. After 10weeks in theâ€‹ program, it was found that the mean reading speed ofa random sample of 20 second grade students...

Q Assume that two samples are independent simple random samplesselected from normally distributed populations. Do not assume thatthe population standard deviations are equal.A paint manufacturer wished to compare the drying times...

Q Consider the data.xi12345yi4751113(a)Compute the mean square error usingequationÂ Â s2 = MSE =SSEn âˆ’2â€‰. (Round your answer to two decimal places.)(b)Compute the standard error of the estimate using equations =MSE=SSEn âˆ’2â€‰. (Round...

Q A financial planner tracks the number of new customers addedeach quarter for a 6 year period. The data is presented below:YearÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â QuarterÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â NewÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â YearÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â QuarterÂ Â Â Â Â Â Â Â Â Â New2014Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 31Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2017Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 69Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 24Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 54Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 23Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 46Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IVÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 16Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IVÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 322015Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 42Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2018Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 82Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 35Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 66Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 30Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 51Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IVÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 23Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IVÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 382016Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 53Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2019Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 91Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 45Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 72Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 39Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IIIÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 59Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IVÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 27Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IVÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 41Create a simple linear trend regression model.Let t=0 in 2013:...

Q In 2010, the United Nations claimed that there was a higher rateof illiteracy in men than in women from the country of Qatar. Ahumanitarian organization went to Qatar to conduct...

Q A study was conducted to explore the effects of ethanol on sleeptime. Fifteen rats were randomized to one of three treatments.Treatment 1 got only water (control). Treatment 2 got 1g...

Q An engineering firm with a good track record is knownto have a 40% success rate ingetting state-government construction contracts. In a recent year,the firm submitted bidson eight construction projects to...

Q Let x represent the dollar amount spent on supermarket impulsebuying in a 10-minute (unplanned) shopping interval. Based on acertain article, the mean of the x distribution is about $19 andthe...

Q Can the standarderror be a negative (no. 8). Is it possible to check the othersFor each of thefollowing, circle your answer to indicate whether the quantity canNEVER be negative or...

Q Using the binomial distribution formula, find the possibilitythat a family that has 13 children has 10 girls.

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