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Given a sample size of 22, with sample mean 726.2 and sample standard deviation 85.3. What is the conclusion of the test at the a=0.10 level? Please explain answer.
a. Determine the Number of Classes b. Determine the Interval of Classes c. Construct a frequency distribution using the following format
What is the critical value for a one-tailed hypothesis test, using a 5% level of significance level, with both sample sizes equal to 13? Assume the population standard deviations are equal.
A simple system consists of four components placed in parallel. Each component has the same reliabity r. If we want the reliability of the entire system to be atleast 0.95, then the reliability of
Can you give me an operation example of the differences between scalar multiplication and matrix multiplication?
How do correlation coefficients summarize the information in scatter-plot? What do scatter-plots reveal that correlation coefficients do not? What is the relationship between the correlation coeffic
Two fair dice, one red and one green. are rolled. Let the event A be "the sum of the faces showing is equal to seven." Let the event B be -the faces showing on the two dicc art equal'.
Suppose the newspaper states that the probability of rain today is 40%. What is the complement of the event "rain today"?
A group of 2000 randomly selected adults were asked if they are in favor of or against cloning. The following table gives the responses.
According to a survey, 62% of murders committed last year were cleared by arrest or exceptional means. Find the probability that exactly 39 of the murders were cleared.
Arc the events -psychology major and "happy with major" independent? Are they mutually exclusive? Explain why or why not.
Are the events "employed" and "unemployed" mutually exclusive? What about the events "unemployed" and "male"?
Compute the mean and standard deviation of the random variable x, the number of smokers who started before 18 in 400 trials of the probability experiment.
A confidence interval for a population mean has a margin of error of 0.047. Determine the length of the confidence interval.
Suppose an influenza epidemic strikes a city. In 10% of families the mother has influenza; in 10% of families the father has influenza; and in 2% of families both the mother and father have influen
A standard deviation of 12 mmHg. What percentage of 18-year-old women have a systolic blood pressure between 96 mmHg and 144 mmHg?
Consider the system with components as shown below, indicating their failure relationship. The component reliabilities are given in the table below. What is the overall system reliability?
Suppose an influenza epidemic strikes a city. In 10% of families the mother has influenza; in 10% of families the father has influenza; and in 2% of families both the mother and father have influenz
Given ten students, four of which are females, if two students are selected at random, without replacement, what is the probability that both students are female?
One of your company's products, a flux capacitor, is known to have an exponential failure time distribution with a mean of 5 years.
If a gambler rolls two dice and gets a sum of 9, he wins $12, and if he gets a sum of four, he wins $20. The cost to play the game is $5. What is the expectation of this game? show your work.
You bought a new set of tires from the manufacturer who just announced a recall because 12% of those tires are defective. What is the probability that at least one of yours is defective?
You are informed that 72% of cars pass inspection. If the event of your car passing is independent of your friend cars passing, What is the probability of at least one car passing?
listed 3.52 8.87 3.99 3.61 2.33 3.21 0.25 4.94 are weights (in pounds) of glass discarded in one week by randomly selected households (based on data from the Garbage Project at the University of Ar
A mean of 6 minutes and a standard deviation of 1.24 minutes. What cutoff values would seperate the 16% that take the least time to process?