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A survey organization wants to take an SRS in order to estimate the proportion of pople who have seen a certain television program. To keep the costs down, they will take as small a sample as possible. But their client will only tolerate chance errors (deviations from the expected value) of 1 percentage point or thereabouts. Should they use a sample of size 100, or 2,500 or 10,000? You may assume that the population is very large and also that the population proportion will be in the range of 20% to 40%.
Use a 0.05 significance level to test the claim that the mean speed of all cars is greater than the posted speed limit of 70 mph. Based on the above situation compute the value of the test statistic.
One suggested environmental determinant of pediatric lung function is the level of cigarette smoking in the home. A researcher wants to do a pilot study with two groups:
A description of a Pew Research Center poll referred to "the random generation of the last two digits of telephone numbers." Each digits has the same chance of being randomly generated. Construct a table representing the probability distribution f..
question there is some evidence that rem sleep associated with dreaming may also play a role in learning and memory
If it takes a colony of termites one day to devour a block of wood that is 2 inches wide, 2 inches long, and 2 inches high, then how long will it take them to devour a block of wood that is 4 inches wide,
What is the porbability that less than 20 programmers have had experience in computer programming before being hired.
How do you solve the inequality (x + 1)(x - 6)
question two opponents a and b are to play a game which consists of two indenotpendent rounds. to win the game a
the shell of the land snail limocolaria martensiana has two possible color forms. streaked and pallid. in a certain
Prepare an analysis of how you developed your instrument. The survey instrument is supposed to determine the level of self confidence in the participant.
a sample of data on daily prices of three petrol stations over a two week period have been collected in the table
Develop the 5-Step Hypothesis Test for a particular claim related to your work or life environment. (This should be a test of one-sample mean or one-sample proportion.
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