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question a describe the general process of constructing confidence intervals and performing hypothesis tests using the
question to help your restaurant marketing campaign target the right age levels you want to find out if there is a
question part of the assembly line will need adjusting if the consistency of the injected plastic becomes either too
question some of your advertisements seem to get no reaction as though they are being ignored by the public you have
question in a random sample of 725 selected for interview from your database of 13916 customers 113 said they are
question your factorys inventory level was determined at 12 randomly selected times last year with the following
question your bakery produces loaves of bread with 1 pound written on the label here are weights of randomly sampled
question view the 20000 people in the donations database on the companion site as a random sample from a much larger
question suppose that the target response rate was 4 when the current mailing was sent to the 20000 people in the
question obtain an estimated value and a standard deviation either from data or by educated guess for each of two
question find a report of an opinion poll on the internet or in a newspaper write a paragraph summarizing one of the
problem promising results from a specialty catalog surveythe preliminary survey results just came back on the specialty
question a what is a hypothesis in particular is it a statement about the population or the sampleb how is the role of
question a what is the reference value does it come from the sample data is it known or unknownb what is the
question a what in general is a test statisticb which test statistic would you use for a two-sided t-testc what in
question a what assumptions must be satisfied for a two-sided t-test to be validb consider each assumption in turn what
question a what is a type i error can it be controlled why or why notb what is a type ii error can it be controlled why
question a survey of your customers shows to your surprise that 42 out of 200 randomly selected customers were not
question a sample of 93 coils of sheet steel showed that the average length was 10137 m with a standard deviation of
question as a basis for a brochure describing the speed of a new computer system you have measured how long it takes
question samples of rock taken from various places in a proposed mine have been analyzed for each sample a rate of
question you are concerned about waste in the newspaper publishing process previously no measurements were made
question you have landed nine sales contracts with an average price of 3782 and a standard deviation of 1290a identify
question a random sample of 50 recent patient records at a clinic shows that the average billing per visit was 5301 and
question find the 99 confidence interval for the strength of cotton yarn used in a weaving factory based on the data in