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(a) A marketing agent asked people to rank the quality of a new soap on a scale from 1 (poor) to 5 (excellent). The level of this measurement is
(i) interval (ii) nominal (iii) ordinal (iv) ratio
(b) A STAT 200 instructor surveyed nearly 100 students, who took STAT 200 in Fall 2018, and asked how many hours they spent on STAT 200 each week. The average hours spent was 12.25 hours. The value 12.25 is a:
(i) parameter (ii) statistic (iii) population (iv) sample
Using a three-period weighted moving average with weights 3, 2, and 1 13 = most recent2, determine the demand for vacuum cleaners for February.
Suppose the population standard deviation is 350 kilowatt hours. Determine the standard error of the mean. With a .95 probability, determine the margin of error.
Customers arrive at a certain business at a rate of 6 per hour. Assuming a Poisson model for their arrival, answer the following questions.
Four regions of Yorkshire classify companies according to primary, manufacturing, transport, retail and service. The number of companies working in each region within each category is shown below. Industrial Sources for Consumption and Investment..
the abcd football association is considering a super ten football conference. the top 10 football teams in the country
Service calls for major repairs are more expensive. Sixty percent of service calls for major repairs cost the customer $300 or more. What is the probability that a randomly selected service call cost $300 or more?
Does this data indicate that the sentiment for increasing the speed limit is different for the two groups of residents? Let p1 refer to the urban population.
If you concluded in part (a) above that the two variables are CI(1,1), estimate the long-run equilibrium relationship between PriCon and PerDisInc by the DOLS and FMOLS methods. Briefly comment on the results.
You are under great pressure to raise tuition to compensate for the falling revenues. However, you suspect that raising tuition might only make matters worse. What internal and external pricing factors should you consider before you make your deci..
Is the chi-square distribution is a skewed distribution whose mean value is n for degrees of freedom larger than two?
Using sample, determine a 98% confidence interval for mean weight of whole daily output.
Imagine that these results are disseminated to the general public through publication and media coverage. Write about one possible harmful consequence that these conclusions could have in the "everyday" world.
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