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Validity is more critical to measurement than reliability. A valid measurement is reliable, but a reliable measurement may not be valid. Do you agree with these statements? Explain your answer. Provide examples to support your rationale.
Using the .05 level of significance: a) Is there a difference among types of gasoline? b) Is there a difference in the cars?
Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
What is the probability that a randomly selected cell phone bill is more than $67.75?
Recognize the given samples are independent samples or matched pairs.
Following a lognormal distribution with a mean of 3000 rpm and std deviation of 0.87, what if the boss want a 5% chance of HW failure before selling, how often would I have to replace this hardware ?
Find out and interpret coefficients of correlation and determination for U. S. prices versus Canadian prices.
According to the data from the College Entrance Examination Board, scores on the SAT-I test have a mean of 1017, and Q1 is 880.
The random variable x has a normal distribution with mean=30 and standard deviation=30, find the probability that x assumes a value more than two standard deviations from its mean. more than three standard deviations from the mean.
Determine a simple algebraic relationship between the negative binomial probability P(x) and the binomial probability for the probability of n successes in x trials.
Confirm whether given random variable is binomial distribution or not. If this experiment is finished with replacement, explain why.
Test whether the relationship between the plan at retirement and residential area using Chi square test.
Delta Airlines quotes a flight time of 2 hrs, 5 minutes for its flights from Cincinnati to Tampa. We belive that actual flight times are uniformly distriubted between 2 hours and 2 hours 20 minutes.
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