Statistics question and answers for July 17, 2023
- Q The acceptance rate for a university is 42 percent. Assuming thebinomial to the normal distribution. Of the next 10 applicationswhat is the probability that they will accept: (WHEN ROUNDING DONOT...
- Q Predictive analytics is a hot topic and has become more neededdue to the enormous increase in the amount of data available. Ithas become more approachable though due to the enormous...
- Q Create a case (please refer to the sample below) on theapplication of inferences about the difference between twopopulation means (σ1 and σ2 unknown) and explain the hypothesistests until conclusion.EXAMPLE:22% express...
- Q In North America many birds die because they collide withwindows of high-rise buildings. One possible solution to resolvethe problem is to construct windows angled down slightly toward theground, so that...
- Q you are given a sample mean and the populationstandard deviation. use the information to construct the 90% and95% confidence intervals for the population mean. interpret theresults and compare the widths...
- Q Below we have records of cat 3 or higher Atlantic hurricanesmaking landfall on US coast lines over a period of 100 years. Whyis it reasonable to assume that cat 3...
- Q In a survey on supernatural experiences, 712 of 4011 adultAmericans surveyed reported that they had seen or been with aghost.(a) What assumption must be made in order for it to...
- Q Assume a normal population with known variance σ2, a randomsample (n< 30) is selected. Let x¯,s represent the sample meanand sample deviation. (1)(2pts) write down the formula: 98%one-sided confidence interval...
- Q a trade magazine routinely checks the drive through servicetimes of fast food restaurants. a 95% confidence interval thatresults from examining 605 customers in one fast food chains drivethrough has a...
- Q A bored student starts rolling a die.(a) Let N7 be the number of tries he needs to get 7 fours. Finda formula for the exact probability P(N7 = 42). You...
- Q Note: Please write down the formulas clearly. Thank youThe office occupancy rates were reported for four Californiametropolitan areas.Do the following data suggest that the office vacancies wereindependent of the metropolitan...
- Q Suppose U is uniform on (0,1). Let Y = U(1 − U). (a) Find P(Y> y) for 0 < y < 1/4. (b) differentiate to get the densityfunction of Y...
- Q At a large factory 1% of the workers are using drugs, an eventwe’ll call D. An employee has just been tested by a procedure thathas a 3% false positive rate...
- Q SET UP BUT DO NOT SOLVE the following system of linearequations:A company sells three sizes of fruit trays. The small sizecontains 200 gr of watermelons and 100 gr of grapes....
- Q In a dice game a player first rolls two dice. If the two numbersare l ≤ m then he wins if the third roll n has l≤n≤m. In words ifhe...
- Q Practice question 3.If the actual support for presidential candidate A was 50%,what is the probability that the estimate obtained from a sample of1,600 people would be less than 48%?In the...
- Q design the experiment for model calibration andrelation between george e.p.box and sir ronald a. fisher. what theyhad done in improving doe
- Q So, roll a fair 6-sided dice once, and if the result is 1,2,3,or 4 then toss a fair coin 3 times.If the first result is 5, 6, then toss a...
- Q 22% express an interest in seeing XYZ television show. KLBroadcasting Company ran commercials for this XYZ television showand conducted a survey afterwards. 1532 viewers who saw thecommercials were sampled and...
- Q Hello,Please give me step by step answer (with screenshot) of SPSSusing the ANOVA program to answer the following question. Chegggave different answers.A researcher would like to find out whether a...
- Q A HW has to be assigned and evaluated in these Corona times. AnAssistant with a mask will take sterilized homeworks from theProfessor of the course and distribute it to the...
- Q Suppose that a the normal rate of infection for a certaindisease in cattle is 25%.To test a new serum which may prevent infection, three experimentsare carried out. Thetest for infection...
- Q The financial structure of a firm refers to the waythe firm’s assets are divided by equity and debt, and the financialleverage refers to the percentage of assets financed by the...
- Q The mean weight of 500 students at a certain college is 151 lband the standard deviation is 15 lb. Assume that the weights arenormally distributed.a.) How many students weigh between...
- Q For developing countries in Africa and the Americas, letp1 and p2 be the respectiveproportions ofbabies with a low birth weight (below 2500 grams). A randomsampleof n1 = 2000 African women...
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