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1. Describe the data that are collected for an independent-measures t test and the hypotheses the test evaluates.
2. Briefly explain advantages and disadvantages of using repeater-,easures design as apposed to an indepedent-measures design.
The average service time at CheesePlate Restaurant is 3.5 minutes with a standard deviation of .04 minutes. A new order system claims it can improve service time
a producer of a certain type of electronic component ships to suppliers in lots of twenty. suppose that 60 of all such
Superior Medical System's 2005 balance sheet showed total common equity of $2,050,000. The company had 100,000 shares of stock outstanding which sold at a price of $57.25 per share.
The distribution is normal. The mean numbers of trials to learn maze for the group with the colrful wallpaper is 11. What is the standard deviation of the distribution of means?
students enrolled in an introductory statistics course at a university were asked to take a survey that indicated
question an outbreak of food-borne illness was attributed to salmonella. epidemiologists determined that the outbreak
Suppose a simple random sample of 20 non-English student have an average math score on the SAT exam of 528. What are the appropriate hypotheses?
Suppose you are working with a data set that is normally distributed, with a mean of 300 and a standard deviation of 44. Determine the value of x from the following information.
The distribution of the serve speeds was mound-shaped and symmetric. What proportion of the player's serves was between 89 mph and 128 mph?
If a person were to be hit by lightning, they have a 33 percent chance of being killed. Find the odds that a person will be killed if struck by lightning.
Construct a 95% confidence intervalfor the population proportion of positive drug tests. Why is the normality assumption not a problem despite the very small value of p?
Which are likely to be independent events? For those you think are not, suggest reasons why.
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