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Military radar and missile detection systems are designed to warn a country of an enemy attack. A reliability question is whether a detection system will be able to identify an attack and issue a warning. Assume that a particular detection system has a .90 probability of detecting a missile attack.
(A) What is the probability that a single detection system will detect an attack?(B) If two detection systems are installed in the same area and operate independently, what is the probability that at least one of the systems will detect the attack?(C) If three systems are installed, what is the probability that at least one of the systems will detect the attack?(D) Would you recommend that multiple detection systems be used? Explain.
List all samples of 3 and compute the mean of each sample. Compute the mean of the distribution of sample means and population mean. compare the two values
Given 7 male individuals in a Physical Education course, the number of sit ups each individual can do in a one minute period was recorded:
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
Suppose we estimate this model with OLS, and there is a correlation between unobserved student traits (in the error term) with attendance. How does this bias the coefficient of attendance?
A researcher wants to see if there is a relationship between birth order and personality. A sample of n = 100 people is obtained, all of whom grew up in 3-child families.
Standard deviation of sample was $3.53. Determine point estimate of population mean. Determine the 95% confidence interval of population mean. Suppose the variable is normally distributed.
A study was recently done in which 500 people were asked to point out their choices for one of three products. Following table illustrates the breakdown of responses by gender of the respondents.
A consumer purchases 12 frozen chickens. What is the probability that the consumer will have more than 6 contaminated chickens.
What information is provided by the numerical value of the Pearson correlation? For the following scores, compute the Pearson correlation:
You're operating a business in very competitive market. You're not yet the dominant player, but you have invested heavily in marketing and product development and it has paid off with a steady growth rate of 10%.
Write the linear regression equation to forecast father's education from mother's education?
If the research question were defined as will buyers purchase more of a product in a blue colored or silver package? the most appropriate type of research would be
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