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A machine fills containers with a mean weight per container of 16.0oz. If no more than 5% of the containers are to weigh less than 15.80 oz., what must the standard deviation of the weights equal?
Suppose that four American adults are asked if they ate at table-service restaurants last week. What is the probability that all of them say yes?
In 2002 the Supreme Court ruled that schools could require random drug tests of students participating in competitive after-school activities such as athletics.
Find the standard deviation and variance from the (population) data below. Describe your results.
A street performer approaches you to make a bet. He shows you three cards: one that is blue on both sides, one that is orange on both sides, and one that is blue on one side and orange on the other.
Determine the probability that tire wears out before 70,000 miles?
How many measurements should be made in order to be 90% certain that the maximum error of estimation will not exceed 2.0 seconds?
A toy manufacturer wants to see how long, on average, a new toy captures children's attention. He tests 10 children selected at random and finds that their mean attention span is 33 minutes with a standard deviation of 6 minutes.
Briefly describe correlational research. Name a variable from the workplace that might prove to provide a correlational relationship and explain why you would choose these two?
An economist is interested in studying the spending habits of consumers in a particular region. The population variance is known to be $1,000,000. A random sample of 50 individuals resulted in an average expense of $15,000. What is the width of th..
A sample of 40 new baseball with mean of 92.67 and standard deviation of 1.79 does it have a mean hieght that is less than a ball with a mean of 92.84
A certain type of injury has tangible costs of $40,000 per occurrence and intangible costs of $150,000 per occurrence. Perform a cost/benefit analysis to weigh the benefits of the proposed safety glasses policy against its expected costs.
Determine regression line for predicting January temperature from latitude.
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