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What does p = .05 mean? What are some misconceptions about the meaning of p =.05? Why are they wrong? Should all research adhere to the p = .05 standard for significance? Why or why not?
There are six ways in which a person and the situation interact to shape a person's goals, thoughts, feelings, and behaviors.
Lifetimes of computer memory chips have Gamma distribution with mean μ=4 years and variance σ2=16/3 years. What is the probability that such a chip has a lifetime of less than 8 years?
What is coefficient of dispersion. & why coefficient word is used here.
There are 2 groups of education majors. they are all assigned to study a diverse neighborhood where their internship will be.
You notice in your introductory psychology class that more women tend to sit up front, and more men in the back. To determine wheather this difference is significant, you collect data on the seating
Find the z-score location of vertical line that separates normal distribution as described in each of the following 20% in the tail on the left.
Determine the sample size necessary to estimate a population proportion to within .01 with 90% confidence assuming you have no knowledge of the approximate value of the sample proportion.
A random sample of 25 was drawn from a normal distribution whose standard deviation is 5. The sample mean is 80. Determine the 95% confidence interval estimate of the population mean.
If a particular man has a history of hitting the center of the target with 90% of his shots, what is the probability of the following? He will hit the center of the target with all five of his nex
When they lose the series, they win the first game 25% of the time. The first game is over; your team has lost. What is the probability that they will win the series?
Determine the probability of a crash with at least one fatality if a driver drives while legally intoxicated (BAC greater than .09).
The mean resting pulse rate for a large group of varsity athletes was 72 with a standard deviation of 9.46. What percentage of the group had pulse rates of 70 or lower?
What is the probability that the average time to failure for 30 randomly chosen components will be less than 5000 hours?
Random sampling from two normal populations produced the following results:
State the null and alternative hypotheses you would use to test whether the year-end bonuses paid by Jones & Ryan were different from the population mean.
If one extra component is installed as a backup, what is the probability of at least one of the two components working for at least 60 hours?
Test with alpha = .05 to determine whether we can infer that the population means differ
Let A be the event that both are either a jack, queen,king, or ace of hearts, and let B be the event that both are aces. Are A and B independent? Why or why not?
What is the probability that a male student will graduate within five years? Given the preceding results, what are the percentage of women and the percentage of men in the entering freshman class?
Travelbyus is an Internet-based travel agency wherein customers can see videos of the cities they plan to visit. The number of hits daily is a normally distributed random variable with mean of 10,0
As the number of trails in a binomial distribution application becomes large, what is the advantage of using the normal approximation of the binomial distribution to compute probabilities?
Given a binomial random variable with n=10 and p= .3, use the formula to find the following probabilities:
What is the probability of a patient dying within 24 months of being discharged after treatment for a heart attack?
Let T be the event the company is headquartered in Texas. Find P(T). Let B be the event the company is headquartered in one of these six states. Find P(B).