Population standard deviation
The average length of stay at a local hospital is 4.9 days. Assuming a population standard deviation of 3.5 days, what is the probability a random sample of 50 patients has an average stay of 5.2 days or less?
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In the test of a certain hypothesis, the P-value corresponding to the test statistic is 0.0316. Can the null hypothesis be rejected at the
Data with 250 observations are drawn from a bell-shaped distribution with a mean of 50 and a standard deviation of 12. Approximately how many observations are more than 74?
This is another example of regression to the mean: students who do well on the midterm will on average do less well, but still above average, on the final.
Mars states that the population proportion of blue M&Ms is .240. When approximating the binomial distribution as NORMAL, what is the probability of calculating a sample proportion of .237 or less blue M&Ms from a sample size of n = 70?
In an application to estimate the mean number of miles that employees commute to work roundtrip each day, the following information is given: n = 20; sample mean = 4.33; sample standard deviation of s = 3.50 miles.
Suppose you want to estimate the population proportion of statistics nerds at college. To do so, you take a sample of 100 students and find that 20 of those students were bona-fide, genuine statistics nerds. What is the lower limit of the 90% conf
A large city claims that it provides "free lunch" to more than 30% of its elementary school students. A researcher selects a random sample of 200 students and finds that 72 were getting free lunches. Does the evidence supports the claim at ? = 0.0
An engineer takes a large number of independent measurements of the length of a component and obtains Mean X = 5.2 mm and Standard Deviation = 0.1 mm.
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She feels the pressure to academically de well and succeed sue to her families sacrifices
One privacy issue that was not included in the original responses is the risk of emotional or psychological data being collected by new devices.
Based on educational knowledge already possessed or learned, how does that knowledge affect your future behavior or action in connection with Greenhouse
To determine when my problem space is sufficiently narrowed to support a feasible study, I evaluate several key criteria drawn from established research guideli
Problem: Research Paper Understanding Human Perception by Human-made Illusions, Claus-Christian Carbon, Frontiers in Human Neuroscience, 2014
Briefly describe the context of your first interaction with each person. Based on your reading of 5.1 Key Takeaways in Jhangiani and Tarry (2022)
Write a 3-4 page written summary from cited Source 1: Smith, A. et al. (2019). "The Efficacy of Social Skills Interventions for Children with Autism Spectrum Di