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The number of observations minus the number of constraints or assumptions needed to calculate a statistical term is called the _____.
According to an IRS study, it takes a mean time of 290 minutes for taxpayers to prepare, copy and electronically transfer a 1040 tax form. The standard deviation of this distribution is 75 minutes. A consumer watchdog agency selects a random sample o..
Problem 1. An internet service provider (ISP) provides internet connections to 100,000 customers. 10,000 of the customers have high-speed connections and 90,000 of the customers have low-speed connections. The ISP wants to know whether, on the ..
In a lottery game, you pick one number from 000 to 999. If you pick one such number what is the probability that you will win the lottery?
Explain how and why you are using eight variables instead of the original number of 25. I gave the reasons and method adopted in one of the feedbacks.
Tutor O-rama claims that their services will raise student SAT math scores at least 50 points. The average score on the math portion of the SAT is μ = 350 and σ = 35. The 100 students who completed the tutoring program had an average score of 385 poi..
The purpose of this assignmentto test a student's expertise in developing an introduction and writing a review of related literature and developing research gaps that can be addressed by future studies
1. unemploymenta. suppose that 98 million people work and 5 million seek work. what is the unemployment rate?b. now
As part of an assessment for navigation, a professor has his students take a written test. He teaches two sections of the class. The variance and standard deviations for test 1 and test 2 scores are shown below. What do the results say about the rela..
Calculate degrees of freedom and the critical values, or cutoffs, assuming a two-tailed test with a p level of 0.05, for each of the following designs: hours spent studying per week was correlated with credit-hour load for 72 students Twenty-seven co..
a. What are the mean and the standard deviation of the sample mean? What is the probability distribution for the sample mean? Describe this sampling distribution and draw the graph of this probability distribution with its mean and standard deviation..
Create a correlation table for the variables in our data set. Reviewing the data levels from week 1, what variables can be used in a Pearson's Correlation table (which is what Excel produces)
problem1 1. using if filter the data for these students into a column which contains the heights of only female
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