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A random sample found that forty percent of 75 Americans were satisfied with the gun control laws in 2017. Compute a 90% confidence interval for the true proportion of Americans who were satisifed with the gun control laws in 2017. Fill in the blanks appropriately.
A 90% for the true proportion of Americans who were satisifed with the gun control laws in 2017 is ( , ) (Keep 3 decimal places)
Let sample s approximate population sigma. How come the t- table in the AP booklet has degrees of freedom entries way past 30 ??? What am I missing??
For each of the following sampling scenarios, determine which test statistic is appropriate to use when making inference statements about the population mean.
A researcher used stepwise regression to create regression models to predict BirthRate (births per 1,000) using five predictors: LifeExp (life expectancy in years), InfMort (infant mortality rate).
Conduct a test to determine whether the true mean pouring temperature differs from the target setting. Test using α = .01.
Let the random variable X be the total number of days for both packages to arrive. Construct the probability distribution for X.
motorola obtains cell phones from its contract manufacturer located in china to serve u.s. market. the u.s. is served
Assume that when adults with smartphones are randomly? selected, 45?% use them in meetings or classes. If 9 adult smartphone users are randomly? selected
a. Determine the mean and the standard deviation of x. b. For the sample size n 5 2, determine the mean for each possible simple random sample from this population. c. For each simple random sample identified in part (b), what is the probability that..
Suppose that in a pharmacologic study involving 6000 patients,75 patients have blood-glucose levels at least 1.5 times the upper limit of normal on one occasion. What is the probability that this result could be due to chance?
Each of 3 boxes, identical in appearance, has 2 drawers. Box A contains a gold coin in each drawer; box B contains a silver coin in each drawer
Decide whether the experiment is binomial, poisson, or neither based on the information given. you observe the gender of the next 950 babies born at a local hospital.
describe how you will design a study that will optimize sensitivity specificity and predictive value and minimize type
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