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A company wants to know how many hours, on the average, it takes an employee to complete a self study course on ethics. A random sample of 100 employees produces an average of 7.9 hours with a standard deviation of 2.1 hours. At a 99% confidence level, what is the maximum error of estimate? Round your answer to 3 decimal places.
lance a long time proprietor of a mens clothing store in peru illinois has noticed that in the past few years that he
the media often attempts to predict the outcome of national elections. why are they often wrong? based on the concepts
a farmer loses 60000 when the summer is too dry and makes 100000 when the growing season is moderate. the probability
In each of the following cases. find the mean , variance and standard of the sampling distribution of sample proportion p.
The probabilities of the weather being fine, raining, or snowing are respectively 1/2, 1/3, and 1/6. The probabilities that a student arrives on time for school under each of these conditions is 3/4, 2/5, and 3/10 respectively. What is the probabi..
sixteen determinations of the ratio of iodine to silver in four different silver preparations were made with the
How many participants need to be enrolled in each group to have 90% chance of detecting a significant difference using a two-sided test with a a= .05 if compliance is perfect?
A bag contains 4 chips of which one is red, one is blue, one is green, and one is yellow. A chip is then selected at random from a bag and then replaced in the bag.
Let Z be a standard normal random variable. Determine the value of c such that P (Z > c) = 0.1251 is there a way to do this step by step so i can understand it?
What is an interaction? Describe an example; what are the variables within your population (work, social, academic, etc.) for which you might expect interactions?
an industrial psychologist wishes to study the effect of motivation on sales in a particular firm. 24 new salespersons
Tourism is one consideration for CoffeeTime's future. A survey of 1,233 visitors to Mumbai last year revealed that 110 visited a small cafe during their visit. Laura claims that 10% of tourists will include a visit to a cafe.
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