Confidence interval based on the data
The number of unhealthy days based on the AQI (Air Quality Index) for a random sample of metropolitan areas is shown. Construct a 98% confidence interval based on the data. Show step by step.
61 12 95 40 27 38 93 5 13 40
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The article indicated that 600 FBI agents were required to take a polygraph test. Consider the random variable x = number of the 600 tested who fail. If all 600 agents tested are trustworthy, what are the mean and standard deviation of x?
A safety engineer claims that 3 in 12 automobile accidents are due to driver fatigue. Using the formula for Binomial Distribution find the probability that at least 2 of 5 automobile accidents are due to driver fatigue.
Find the margin of error for mu(mew), if x-bar = 50, n= 16, s= 12 and c= 90.
The number of students who belong to the dance company at each of several randomly selected small universities is shown below. Estimate the true population mean size of a university dance company with 99% confidence. Show step by step.
A researcher wishes to be 99% confident that her estimate of the true proportion of individuals who travel overseas is within 4% of the true proportion. Find the sample size necessary if in a prior study, a sample of 200 people showed that 40 trav
The number of carbohydrates (in grams) per 8-ounce serving of yogurt for each of a random selection of brands is listed below. Estimate the true population variance and standard deviation for the number of carbohydrates per 8-ounce serving of yogu
Consider an experiment to determine the effects of alcohol and marijuana on driving ability with Alpha= .05. Fifteen participants were randomly assigned to have alcohol, marijuana, or neither, and were then tested in a driving simulator. The resul
After observing 120 workers. The manager noticed that their average time was 16.2 minutes. Construct a 92% confidence interval for the mean assembly time.
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Compare and contrast these models through a comparison table that summarizes their main characteristics, applicability, underlying theories
What is the role of culture in cognitive development? Compare and contrast how Piaget and Vygotsky address the role of culture.
1. An overview of the ethical principles and standards in research and publication. 2. A discussion of the importance of these principles and standards
In Cormac McCarthy's Pulitzer Prize winning novel - The Road, the protagonists, a man and his son, are navigating a post-apocalyptic world in which
1. Mention and explain the six considerations for oral history practice. 2. If you could interview a famous personality, which one should you select?
The best way to deal with confounding variables is to statistically control for their effects after your experiment has been conducted,
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