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A state regulatory agency is studying the effects of secondhand smoke in the workplace. All companies in the state that employ more than 15 workers must file a report with the agency that describes the company's smoking policy. In particular, each company must report whether (1) smoking is allowed (no restrictions), (2) smoking is allowed only in restricted areas, or (3) smoking is banned. In order to determine the effect of secondhand smoke, the state agency needs to measure the nicotine level at the work site. It is not possible to measure the nicotine level for every company that reports to the agency, and so a simple random sample of 25 companies is selected from each category of smoking policy." Would you use ANOVA to answer this research question?
Describe in some detail how a hypothesis test could be used in some real world context such as business, politics, church, Girl Scouts, school, or perhaps your place of work.
How many ounces should they advertise on the box if they want to be sure that no more than 0.5% of the boxes are filled less than that advertised amount?
Please explain the term analysis variance so a person without formal statistics education can understand.
Soft Drinks a vending machine automatically pours soft drinks into cups. As the amount of soft drink dispensed into a cup is normally distributed
The owner of the Burger Doodle Resturant is considering two ways to expand operation: open a drive-up window or serve breakfast. Th increase in profits reulting from theise proposed expansions depend on weather a competitor opens franchise down th..
the probability that a household is both prosperous and educated is P (A and B) = 0.082. What is the probability P (A or B) that the household selected is either prosperous or educated.
On a particular day during the most recent golf tournament, the organizer placed the whole (pin) in 0 back left corner of the green. 64 golfers played the hole with the new placement on that day. Find out the probability of the sample average numb..
A state representative is reported as saying that about 10% of reported auto thefts involve owners whose cars have not really been stolen, but who are trying to defraud their insurance company.
A certain model of remote-control Stanley garage door opener has nine binary (off/on) switches. The homeowner can set any code sequence.
The sample yielded a mean content of 11.88 ounces, with a standard deviation of 0.24 ounces. Use a 0.05 level of significance and test to see if the machine is in perfect adjustment (perform all six steps of hypothesis testing, including p-values)..
Compute the sample variance and sample standard deviation as a measure of volatility of monthly total return for Chevron (to 2 decimals): Sample variance and Sample standard deviation.
The new study is going to use the confidence level of 90%. The estimator or appreciative must be in 1% of the population proportion. Which is the necessary size of the sample?
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