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Determine the following probabilities for the stand normal random variable for
A mean of 38 minutes and standard deviation of 5 minutes. What proportion of students work on homework less than 29 minutes in seminar?
Get (generate) random sample of 180 numbers between 1 and 60. Sketch histogram to represent distribution. Comment on shape of distribution.
Participants in new relaxation program complete questionnaire after completing program, and have mean score of 10.2. Find the effect size of relaxation program?
The mean number of sales per month for who participated in new program was 29. Find the effect size of new sales program.
Give the system of equations that describes this situation. Solve it using the Gauss-Jordan elimination method as described and demonstrated in class.
Find the significance of the null hypothesis? Why has it been backbone of mainstream hypothesis testing for decades? What are its limitations?
How does technological advancement influence ability to collect data? Give examples. Does advancement increase chance for errors? Describe.
A researcher predicts that watching a film on institutionalization will change students' attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students
Find the P-value for the indicated hypothesis test. In a sample of 88 children selected randomly from one town, it is found that 8 of them suffer from asthma.
The score for a similar class of students who didn't see the film is 75. The standard deviation is 12. Using the five steps of hypothesis testing and the 5% significance level (i.e. alpha = .05), do
The margin of error in poll was 3% and estimate was made with 96% confidence. At least how many people were surveyed?
What does it mean to set alpha at .05? What is your null hypothesis? Alternate hypothesis? Is this a one-tailed or two-tailed hypothesis and why?
Estimate following two compositions: (f?g)(x) and (h?g)(x). Transform g(x) function so that graph is moved 6 units to right and 7 units down. Determine inverse functions f^-1(x) and h^-1(x).
Carol purchases a car for $36,000, makes a down payment of 10%, and finances the rest with a 6-year car loan at an annual interest rate of 5.7% compounded monthly. What is the amount of her monthly
Assume an atomic reactor has two independent cooling systems. Find probability that both cooling systems fail simultaneously.
It is desired to find mean viewing time within one quarter hour. 0.95 degree of confidence is to be used. How many executives must be surveyed?
Find p-value for testing hypothesis that news program for KOPE does not have at least 40% of market, as it claims.
Determine p-value for test of hypothesis that sodium content is different than nutrition label states. Is sufficient evidence to reject null hypothesis at significance level of 0.01?
Find probability that average weight of turkeys will be less than 14.5 pounds. Find probability that average weight of turkeys will be more than 17 pounds?
What is the relationship between an exponential function, such as y = 2x, and a logarithmic function, such as the logarithm of x to the base of 2? What values does understanding logarithmic function
Discuss and provide an example of the method employed to solve a linear inequality in two variables
Find probability that at least one baby is born with congenial defect in a year. Find probability that exactly 12 babies are born with congenial defect in year.
Two people, Ella and Jane, decide to start saving for retirement. Ella decides to invest $4000 a year into an annuity at the age of 25. At the age of 35 she stops making investments and just leaves
What is the difference between the present value of an investment and the present value of an annuity? How are they computed? What is amortization? How are the payments computed?