give the come notation. 14 points] olowing as cither a parameter or a statistic,
ID: 3321278 • Letter: G
Question
give the come notation. 14 points] olowing as cither a parameter or a statistic, and a. Average gas price in Minnesota, based on prices at randomly selected gas stations throughout the state. at a university that are part-time, based on data on all students enrolled at the university 5. Using the confidence interval given, indicate the conclusion of the test and indicate the significance level used. (10 points) a. A95% confidence interval for a mean s 12.5 to 17.1. Testing Ho: =18 vs Ha: #18. b. A 99% confidence interval for a difference in proportions is-0.10 to 0.20. Testing The owner of a small pet supply store wants to open a second store in another city, but he only wants to do so if more than one-third of the city's households have pets (otherwise there won't be enough business). He samples 150 of the households and finds that 64 have pets Define the appropriate parameter(s) and state the hypotheses for testing if this sample provides evidence that more than one-third of households in this city own [10 points] 6· pets.Explanation / Answer
Question 4:
Note that the statistics like sample mean and sample proportion are defined for a sample while the parameters like population mean, population parameter are defined for a population.
a) Here we are given the sample mean based on randomly selected gas stations ( not all the gas stations at the state ) . As it is not taking all the stations, this is a case of a sample mean and not the population mean. Therefore this is a statistic here.
b) Here in contrast to the previous part we are taking the proportion for all the students enrolled in the university and not just a randomly selected group of students. Therefore this is a case of population proportion here and not sample proportion. Therefore this is a case of a parameter.
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