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Explain how you would ensure the reliability and validity of your own study.
If the test contains 250 questions, what is the probability that Julie will score 75% or lower? (Use the normal approximation to the sampling distribution to solve this problem.)
These two questions relates to Basic Statistics. The first question discusses about computation of correlation. The second question is about the features of correlation coefficient
scores derived from a patient satisfaction survey are normally distributed with u 50 and sigma7.5 with high score
The probability that a call-centre consultant receives 3 calls during any given hour is 0.1404 and the probability that the consultant receives 5 calls during any given hour is 0.1755. Assuming that the calls are Poisson-distributed, calculate the p..
A medical researcher is interested in whether patient's left arms or right arms are longer. if 14 patients participate in this study (so that n left arms and n right arms are measured), how many degrees of freedom should the researcher use in her ..
Parking II. Suppose that, for budget planning purposes, the city in Exercise needs a better estimate of the mean daily income from parking fees.
use the weights of cans of generic soda as sample one and use weights of cans as the diet version of that soda as
a company is considering producing some new gameboy electronic games. based on past records management believes that
What variables to measure? Based on your description of the process in Exercise, suggest specific variables that you might measure.
1. Discrete Probility Distributions Questions. Assume X is a random variable. (a) Values of a random variable, X, can not be negative or greater than one.
Name four correlation coefficients and describe when it is appropriate to use each. State the formula for the following: Converting r to a t statistic.
Conduct a hypothesis test to determine if an increase of 1 unit in the x variable will result in the decrease of the average value of the y variable.
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