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Roller coasters
An amusement park has opened a new roller coaster. It is so popular that people are waiting for up to 3 hours for a 2-minute ride. Concerned about how patrons (who paid a large amount to enter the park and ride on the rides) feel about this, they survey every 10th person on the line for the roller coaster, starting from a randomly selected individual.
a) What kind of sample is this?
b) Is it likely to be representative?
c) What is the sampling frame?
the diameter of a spindle in a small motor is supposed to be 5 millimeters with a st.dev. of 0.04 mm. if the spindle
The time from product inception and design to marketing and sales is important for application software in mobile devices.- Construct an appropriate control chart and comment on the organization's responsiveness to market needs.
A coin was flipped 60 times and came up heads 36 times. What is the critical value you would use to test whether the proportion of heads is greater than 0.50 at a 10% level of significance?
It is estimated that 0.5 percent of the 1200 callers per day to the Customer Service Department of Dell, Inc. will receive a message that the line is busy and be automatically transferred to a winning mode until a "representative is available to t..
q1. if we have a sample size of 100 and the estimate of the population proportion is 0.10 the mean of the sampling
Assume that a single radar unit used to detect incoming missiles has a probability of 0.90 of correctly detecting an incoming missile attack.
Module 4 Project: Correlated Data Analysis HSC-731, spring 2016. Describe what the missing data patterns for dep1 to dep6. What is a benefit of random effects models compared to repeated measures ANOVA or MANOVA for analyses with missing data
the financial industry earnings per share last year were 3. this year earnings per share in 10 financial companies were
Using one mean Z test to test whether or not to support the claim - Is there evidence that the average hours is below 6? Describe.
Calculate the sample correlation coefficient by hand. By use of a spreadsheet calculate the sample correlation coefficient.
In 1851 there were 25,466 nurses in Great Britain. Find the probability that a British nurse selected at random in 1851 would be 60 years or older. (My guess is The sum of the percent of nurses 60 years are older are added equaling 36% or 1967.76/2..
Summarize the blog entry that you have read. Next, explain the manner in which Nate Silver's analysis in your chosen blog entry addresses the salient points of one particular topic related to this class.
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