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A recent study claimed that 15% of all eighth- grade students are overweight. In the sample of 80 students, 9 were found to be overweight. At a= 0.01, is there adequate evidence to reject claim using critical values?
In order to compare the means of two populations, independent random samples of 484 observations are selected from each population, with the following results:
List 1 profession example for each probability type: empirical probability and theoretical (classical) probability. Explain clearly how these probabilities are used.
Develop upper and lower control limits (99.7%) for the proportion of students with complaints.
A study of 35 professors showed that the average time they spent creating test questions was 13.5 minutes per question. The standard deviation of the population is 3.8. Which of the following is the 99% confidence interval for the average number o..
The statistical analysis predicted that there would be 104 foxes. Calculate the residual for that data point.
Determine estimated average starting salary for school with average GMAT of 600 points?
Explain why random samples are preferred to nonrandom samples.
If 30 Samples of 100 items are tested for nonconformity, and 95 of the 3000 items are defective, find the upper and lower control limits for a p chart.
Use a significance level of alpha = .05 to test the claim that p > .5. The sample is a simple random sample n = 50. Show how to calculate beta for the test and assume the true population proportion is .6.
Which confidence interval has the most variability?
The number of students that enroll in a psychology course is a poisson random variable with mean 100.the course incharge has decided that if the enrolling is 120 or more he will teach the course in two separate sections.
What is the probability that a randomly selected mango weighs less than 14 ounces?
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