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-In a population of high school students' algebra scores, the mean is 64 and the standard deviation is 6. Find the z values that corresponds to a score x = 81.
-In a certain university, the students were informed that they need a grade in the top 8% of the engineering students to get a scholarship for the next semester. In the standardization of the test, the mean was 76 and the standard deviation is 14. Assuming that the grade is normally distributed, what must be the minimum grade to obtain the scholarship grant.
in a random sample of males 23 write with their left hand and 217 do not. 65 females write with their left hand and 455
Standard deviation of 12 ounces. Find the probability of randomly selecting a newborn child whose weight is less than 107 ounces.
the data show the chest size and weight of several bears. find the regression equation letting the first variable be
There are 25 questions on the questionnaire administered to a male student and 30 questions on the questionnaire administered to a female student.
the amount spent on their first visit is approximately normal, what is the shape of the sampling distribution of the sample mean that will be used to create the desired confidence interval for μ?
A total of 20 bags of Haribo gummi bears are randomly distributed to 20 students. Each bag is obtained by a random student, and the outcomes.
Assume that the weather is not independent of each other. The probability of tomorrow's wind and rain is 10%. What is your probability of going out tomorrow?
A radio station wants to know if residents in their area are in favor of a proposed tax increase. They invite listeners to call in to respond to the poll. 645 of the 800 who responded were against the tax.
The more cigarettes a person has smoked over his or her lifetime, the greater the probability that the person has developed lung cancer.
Compute test statistic for sample data that you would use to test whether sample mean varies from population mean of 10 pounds at a 5 percent level of significance in two-tailed test.
Suppose that transmissions occur in blocks of 10,000 bits. Let N be the number of errors introduced by the channel in a transmission block.
Determine the reliability of the system, (a) assuming that the components are connected in series, and (b) assuming that the components are connected
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