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Suppose that the number of flaws in a certain type of magnetic tape is, on average, three per 500ft. Assuming a Poisson distribution, what is the probability that a tape of length 800ft contains at least two flaws?
With mean 120 mmHg and standard deviation 20 mmHg. The mean systolic blood pressure for the sample was 126 mmHg. How likely is it that the results of this sample occurred?
Suppose that a study based on a sample from a targeted population shows that people at a pizza restaurant are hungrier than people at a coffee shop. Make an interference based on the results of the study.
1. Develop the appropriate research questions and/or hypothesis for the main effects and interaction.
She has a history of being successful at getting a donor on 55 percent of her calls. If June has a quota to get at least four donors each day.
Formulate a linear programming model that can be used to determine the number of units each model that should be produced in order to maximize the total contribution to profit
List the stages involved in analysing qualitative data. When would you prefer the grounded theory approach to qualitative data analysis?
a bank has the following data on the gender and marital status of 200 customers: single 20 male 30 female, married male 100 female 50,
The standard IQ test has a mean of 100 and a standard deviation of 13. We want to be 98% certain that we are within 2 IQ points of the true mean. Determine the required sample size.
Their average age was 19.1 years with a standard deviation of 1.5 years. What is the 95% confidence interval for the population mean?
What sample size would be necessary to estimate the true weight with an error of +/- 0.03 grams with 90 percent confidence?
However one of the children fails to solve the peoblems, so the researcher has an undetermined score. what is the best measure of central tendency for these data?
Find the margin of error for the 95% confidence interval used to estimate the population proportion. In a survey of 7100 T.V. viewers.
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