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Consider babies born in the "normal" range of 37 - 43 weeks gestational age. Extensive data supports the assumption that for such babies born in the United States, birth weight is normally distributed with mean = 3432 grams and standard deviation = 482 grams.
If Procter & gamble sells about 20 million bars of soap per week, but the demand is not constant, and production management would like to get a better handle on how sales are distributed over the year. What might be helpful to the production and (..
Four customers in succession come into the store to order stereos. The retailer is interested in their preferences. List the possibilities for preference arrangements among the four customers.
Find the probability using the Poisson distribution.
Write a paragraph or two summarizing what you can conclude from the summaries you generated. You should address the central tendency, variability, and shape of the data.
Conduct an ANOVA comparing the anxiety levels (at posttest only) of participants across all three treatment conditions: CBT, psychodynamic, and supportive therapy.
Use the correct formula to find the probability that, out of 15 patients, exactly 11 are pleased with the service. Show your calculations or explain how you found the probability.
In a sample of 14 of the bowling balls the sample standard deviation was found to be 0.52 pounds. Construct a 95% confidence interval for the variance of the bowling ball weight.
The output of the source is transmitted via a channel that has probability of error (turning a 1 into 0 and 0 into 1) equal to 0.2. what is the probability that a 1 is observed?
If there is relationship between parental income and SAT score, why can't we bring to a close that differences in score are caused by differences in parental income.
Consider the following number of defective circuit boards produced by two different machines on seven randomly selected days. To three decimel places what is the mean of machine A?
A machine produces parts with lengths that are normally distributed with ? = 0.59. A sample of 19 parts has a mean length of 76.26.
A random sample of 7 students selected from a large class revealed the following scores: midterm 70, 62, 57, 68, 89, 63, 82 and on the final 80, 79, 87, 88, 85, 79, 91. Is there evidence of an improvement on the final?
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