Statistics question and answers for August 02, 2023
- Q In an effort to promote a new product, a marketing firm asksparticipants to rate the effectiveness of ads that varied by length(short, long) and by type of technology (static, dynamic,interactive)....
- Q Below there is information for a 1 sample proportion hypothesistest:H0:P=0.75HA:P>0.75α=0.01What is the smallest value of the test statistic that wouldprovide enough evidence to reject the null hypothesis?If the sample size...
- Q A sample of n = 4 is selected from a population with µ = 50.After a treatment is administered to the individuals in the sample,the mean is found to be...
- Q 1. Statistics at a certain college has been historically taughtat two times: at 8 am and at 4 pm.A random sample of 150 students that took the morning classresults in...
- Q Find the monthly payment needed to amortize principal andinterest for each fixed-rate mortgage for a $220,000 at 4.5%interest for 30 years.
- Q 1b The Earth is structured in layers: crust, mantle, and core. Arecent study was conducted to estimate the mean depth of the uppermantle in a specific farming region in California....
- Q Nick paid off a $15,000 car loan over 3 years with monthlypayments of $466.59 each. Find the finance charge and the APR.
- Q 4. If Z is a standard normal random variable, that is Z ∼ N(0,1), (a) what is P(Z 2 < 1)? (b) Find a number c such that P(Z< c)...
- Q The “cold startignition time†of an automobile engine is investigated by agasoline manufacturer. The following 8 times (in seconds) wereobtained for a test vehicle:1.75, 1.92, 2.62,2.35, 3.09, 3.15, 2.53, 1.91A...
- Q Use the internet to find a data set. Key terms to search: FreePublic Data Sets and Medical Data Sets.Introduce your Data Set and Cite the Source.Why was this data interesting...
- Q 1) Every night there is a 20% chance that Mrs. Lemonde will letMr.Lemonde’s dog George sleep in the bed. Using binomialdistributions answer the following:a) What is the probability that George...
- Q #1) 68% of all Americans are home owners. If 46 Americans arerandomly selected, find the probability that a. Exactly 32 of themare are home owners. b. At most 32 of...
- Q 1: A survey questioned 1,000 high school students. The surveyrevealed that 46% are honor roll students. Of those who are honorroll students, 45% play sports in school and 21% of...
- Q According to a marketing website, adults in a certain countryaverage 61 minutes per day on mobile devices this year. Assume thatminutes per day on mobile devices follow the normal distributionand...
- Q 1 The Earth is structured in layers: crust, mantle, and core. Arecent study was conducted to estimate the mean depth of the uppermantle in a specific farming region in California....
- Q A program was created to randomly choose customers at a shoestore to receive a discount. The program claims 15% of the receiptswill get a discount in the long run. The...
- Q .(25.09) The University of Chicago's General Social Survey (GSS)is the nation’s most important social science sample survey. TheGSS asked a random sample of adults their opinion about whetherastrology is very...
- Q Find c such that each of the following is true. (Roundyour answers to two decimal places.)(a)    p(0 < z <c) = 0.1349c =(b)    p(c < z< 0) = 0.4845c =(c)    p(−c < z<...
- Q What percentage of data would you predict would be between 25and 50 and what percentage would you predict would be more than 50miles? Use the Week 4 spreadsheet again to...
- Q Assume that military aircraft use ejection seats designed formen weighing between149.6149.6lb and212212lb. If​ women's weights are normally distributed with a meanof177.2177.2lb and a standard deviation of48.748.7​lb, what percentage of women...
- Q QUESTION 7Â Â Â [18 MARKS)In the following table, optimistic,most likely and pessimistic time estimates have been given for eachactivity for a project.TaskImmediatePredecessor(s)Time (days)Optimistic (a)Most Likely (m)Pessimistic (b)ANone5712BNone888CA2610DA,B121419EC,D6612FB,E31218GF6810Construct an activity on node network...
- Q 20.24 Xr20-24 The quarterly earnings (in $millions) of a largesoft-drink manufacturer have been recorded for the years 2013–2016.These data are listed here. Compute the seasonal indexes given theregression liney^=61.75+1.18t (t=1,2,...,16)Year2013...
- Q Consider a study on the number of accidents occurred in 10states of the United States of America in different cities for 3consecutive years. Create a PivotTable in Excel to answer...
- Q What is a hypothesis and why might a hypothesis test be useful indeciding whether to launch a new product or not? Give a businessexample to support the reasoning.
- Q A simple random sample of 600 individuals provides 100 Yesresponses.a. What is the point estimate of the proportion of thepopulation that would provide Yes responses (to 3 decimals, ifneeded)?b. What...
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