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For a continuous random variable x, the probability density function f(x) represents
a. the probability at a given value of xb. the area under the curve at xc. Both the probability at a given value of x and the area under the curve at x are correct answers.d. the height of the function at x
If two randoom samples of sizes n1 = 30 and n2 = 36 are selected independently from two populations with mean 78 and 85, and with standard deviations 12 and 15, respectively, then the standard error of the difference between Xbar1 and Xbar2 are eq..
Using the finite population correction factor, compute the standard error for each of the three firms given a sample of size 50.
Using a test, 80% of Down's Sydrome cases can be identified, while 5% of normals are detected as positive. What is the sensitivity and specificity of the test?
Test either there is any difference among the given variable also what does the Levene's Test shows. What variable is presented in this table.
What are examples in which regression analysis is used for forecasting? What are some primary and secondary sources of data that may be used in correlation and regression analysis?
Do these data provide sufficient evidence to indicate that the mean for the population is less than 8 hours? assume a normally distributed population.
Normalized matrix for one decision criterion at Firm T is given below.
Which distribution should be used to create 80% confidence interval?
Many different kinds of data can be modeled using exponential and logarithmic functions. For example, exponential functions have been used by Thomas Malthus to describe the growth of human populations.
Determine the probability that Mexican American male in the 20 -74 age range has serum cholesterol value greater than 240 mg/dl.
Two different simple random samples are drawn from two different populations. The first sample consists of 20 people, with 10 having a common attribute.
If 1.5 million X-Games were sold over the holidays, determine an interval for the number of defectives in sales. 12,184 to 32,816.
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