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International Communications Research (ICR) conducted the 2004 National Spring Cleaning Survey for The Soap and Detergent Association. ICR questioned 1000 American male and female heads of household regarding their house cleaning attitudes. The survey has a margin of error of plus or minus 5%.THOSE HARD TO CLEAN PLACESCleaning windows is rated the most difficult household taskby more than one-third of adults.Behind the TV 24%Don't know 8%Tops of shelves 16%Under couch 12%Venetian blinds 35%Wooden floors 5%(a) What is the population?the 1000 American male and female heads of householdhardest household place to clean number of hours per week spent cleaningwhich places heads of household clean firstall American heads of household(b) How many people were polled?people(c) What information was obtained from each person?hardest household place to cleannumber of hours per week spent cleaning which places heads of household clean first(d) Using the information given, estimate the number of surveyed adults who think cleaning under the couch is the most difficult cleaning job.surveyed adults(e) What do you think the "margin of error of plus or minus 5%" means?actual percentage could be 2.5% lower or 2.5% higher than quotedestimated percentage could be 5% lower or 5% higher than quoted estimated percentage could be 2.5% lower or 2.5% higher than quotedactual percentage could be 5% lower or 5% higher than quoted
Use these data to test the null hypothesis of no difference in the use of sick days between younger and older adults - What do your results indicate
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Calculate chi-square for this table. Show your work. Draw a table just like the one above, leaving room in each cell to record these numbers: observed frequency fo), expected frequency fe), Fo -fe(f0-fe)2 and (f0-fe)2/fe
Calculate the regression equation for this data
conceptual questionswhat is the difference between descriptive and inferential statistics?what are the five
question 1 variable xx lt- c3 4 8 4 2 1 0 6 variable yy lt- c1 2 4 2 2 0 1 4 calculate z-scores for all values in the
How much of each product do you recommend be produced that you believe maximizes revenue? How much revenue would be made if they followed your recommendation?
A paper company is interested in estimating the proportion of trees in a 500-acre forest with diameters exceeding 2 feet. The company selects 25 plots (100 feet by 100 feet) from the forest and utilizes the information from the 25 plots to help..
Find the probability that exactly 5 rats have recessive traits and find the probability that no more than 9 rats have recessive traits.
Research paper examines determine the impact of social media use on student learning.
question 1 one subway station in toronto has 6 turnstiles each of which can be controlled by the station manager to be
Identify the type of observational study (cross-sectional, retrospective, or prospective) described
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