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A random variable X has E(X)=3 and V(X)=7. Define a new random variable: Y=6X + 3. What is E(Y) and V(Y)?
The results of Computerworld's annual job satisfaction survey showed that 28% of IS managers were very satisfied with their job. 46%= somewhat satisfied, 12% neither satisfied or dissatisfied, 10% dissatisfied, and 4% very dissatisfied.
statistics1 an electronics company is about to launch a new product. if the serial number for eachnbsp piece produced
Example Study 2: Another researcher finds 4,000 men over 40 who have not had heart attacks and are willing to participate in a study. She assigns 2,000 of them into a regular program of supervised exercise. The other 2,000 continued their usual..
Correlation and the corresponding p-value - Calculate Spearman's correlation by hand - Give the hazard ratio and corresponding confidence interval for treatment
Calculate the mean yearly value using the average gas prices by month found in the Final Project Data Set. What is the slope of the linear regression line and what is the Y-intercept of the linear regression line
Omar Haaris receives 5000 tripods annually from Top-Grade Supplier to meet his annual demand
1.) The mean number of English courses taken in a two-year time period by male and female college students is believed to be about the same. An experiment is conducted and data are collected from 29 males and 16 females. The males took an average of ..
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)
1. in this exercise we will be building regression models for predicting house prices. we will be using data collected
What statistical method can you apply using this data?
American Theaters knows that a certain hit movie ran an average (μ) of 84 days in each city, and the corresponding standard deviation (σ) was 10 days. The manager of the southeastern district was interested in comparing the movie's popularity in his ..
Find the probability that exactly 15 babies are female and find the probability that no more than 12 babies are female.
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