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A health club has 6 tennis courts. the owner hypothesizes that his patrons have no preference for a particular court. he observes how many people play on each court on a particular day. compute the expected value for the data shown belowcourt number of players1 92 103 114 65 146 7
a)4.37 b)10.3 c)9.5 d)5.72
A biologist had mice and rats run through a maze and recorded the number that finished the maze successfully and the number that did not. this table lists the results of the study. at a=.05, test the claim that the rodent type and the success of finishing the maze are related.mice ratsfinished 30 22did not finish 36 13
a)there is evidence to reject the claim that the rodent type and the success of finishing the maze are not related because the test value 9.488>1.393b)there is not evidence to reject the claim that the rodent type and the success of finishing the maze are not related because the test value 2.773<3.841c)there is not evidence to reject the claim that the rodent type and the success of finishing the maze are not related because the test value 1.393<9.488d)there is evidence to reject the claim that the rodent type and the success of finishing the maze are not related because the test value 3.841>2.773
A sample of 25 concession stand purchases show a mean purchase of $5.29 with a standard deviation of $3.02. However, a later showing of the same movie, a sample of 25 purchases where the mean was $5.12 with a standard deviation of $2.14.
If in fact the true mean score of all students taking the preparatory course is 522, which of the following statements is true about our hypothesis test?
Determine the estimated population mean?
Assume that female students' heights are normally distributed with a mean given by µ = 67.2 in. and a standard deviation given by σ = 3.6 in.
Describe the "third variable problem" as it relates to correlation and provide an example of how you might see this played out in your own field.
Does this sample give sufficient evidence to conclude that self-esteem scores for group-participation adolescents are significantly different from those of general population? Use two-tailed test with α = .01.
Country A and Country C spends about the same amount on average per person per year. Which has the greater spread?
If 20 customers were selected at random during one business day, what is the probability that at least 11 of them did not order a pastry with their drink.
In a nationwide survey of n = 1,030 adults, 6% answered yes to the question "During the last year did anyone break into or somehow illegally get into your home or apartment?"
Normal with mean 48 months and standard deviation 9 months. The company has decided to give a guarantee for the sensors for 3 years. What % age of the sensors will not satisfy the guarantee.
Based on this data can the college conclude that the students in the new program performed better than the rest of the class> A one-tailed test is used equalling .05
Find the value of W, the test statistic for a two sample rank-sum test that would compare the two methods for losing weight. Give the details of how you found W. Please show your step-by-step hand calculation here.
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