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random sample of 340 people in Chicago showed that 66 listened to WJKT-1450, a radio station in South Chicago Heights. Based on this information, what is the upper limit for the 95 percent confidence interval estimate for the proportion of people in Chicago that listen to WJKT-1450?
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.
Determine the probability that the given class period runs greater than 50.75 minutes. Determine the probability of choosing the class period runs greater than 50.75 minutes.
What is the probability that none of the three parents condone spanking as a regular form of punishment for their children?
To compute all the descriptive statistics for the following set of three test scores over the course of a semester. Which test had the highest average score? Which test had the smallest amount of variability?
Use either Linear Programming module or Transportation module of Cd to minimize the shipping costs involved in move.
If the null hypothesis is true, then how much difference should be expected, on average, between the two sample means?
Find the regression equation and percentage of variance and test whether the equation is significant portion of the variance.
The filling weight for boxes of cereal is designed to have a variance .02 ounces or less. A sample of 41 boxes of cereal shows a sample standard deviation of .16 ounces.
Suppose that a model for the joint distribution of these rvs is a bivariate normal distribution.
You take a random sample and perform a hypothesis test, getting a p-value of 0.2578. What is the appropriate conclusion? Conclude at the 5% level of significance.
In a recent year, 11th grade New York public school students taking an English test produced test scores that were normally distributed with a mean of 81 and a standard deviation of 6. Let x be a random variable that represents a test score.
A Tamiami shearing machine is producing 10 percent defective pieces, which is abnormally high. The quality control engineer has been checking the output by almost continuous sampling since the abnormal condition began.
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