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Hypothesis Test for a Population Proportion
Suppose are running a study/poll about the probability of a true negative on a test for a certain cancer. You randomly sample 140 people and find that 70 of them match the condition you are testing.
Suppose you are have the following null and alternative hypotheses for a test you are running:
H0:p=0.53H0p0.53
Ha:p>0.53Hap0.53
Calculate the test statistic, rounded to 3 decimal places.
z=z
Based only on this information, estimate the probability that you could ski at this resort after May 25 next year. What is the average closing day based on history?
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Find the probability that 665 or fewer college students in the sample send and receive text messages with their phones? Is this result unusual?
Find the value of N which maximizes the expression in part (b). This value is called the maximum likelihood estimate for the unknown quantity N
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These show an average yield of 850 boxes of fruit, with a standard deviation of 100 boxes. Give a 95% confidence interval for m, the average (10-acre) yield for all groves utilizing such a maintenance spraying program. Assume that s can be replace..
Find the probability that an arrival will have to wait.
Conduct all 6 steps of the appropriate statistic and calculate and interpret the effect size for this test - Report the statistics as you would in a journal article.
indicate which student has the larger magnitude z score?art major x46 x with line over it 50.5 s5.2theater major x70 x
Are the events "Republican" and "30-44" independent? Justify your answer. Are the events "Democrat" and "65+" independent? Justify your answer.
What is the first word in the alternative statistical hypothesis for any experiment with three levels of a single IV?
at a large university it is known that 50 of the students live on campus. the director of student life is going to take
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