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According to the national health interview survey, 4.7% of U.S adults 50 and older have had a total knee replacement. A random sample of 20 adults 50 and older has been selected. Use the Poisson distribution to approximate the binomial distribution o determine the probability no adults from this sample have had a total knee replacement.
Heights of men on a baseball team have a? bell-shaped distribution with a mean of173 cm173cmand a standard deviation of7
1. Can we use the large-sample con?dence interval? In each of the following circumstances state whether you would use the large-sample con?dence interval.
The most recent summer was unusually wet, and firefighting officials would like to know whether the mean number of acres burned during wildfires was any less. State the null and alternative hypotheses.
four people are randomly from a group consisting of six men and six women. what is the probability that the group will
A cola dispensing machine is set to depense 9 ounces per cup with a standard deviation of .5 oz .THe manufacturer would like to set the control limits so that for samples of 16,
Produce the scatter plot for sodium and bp. Do you think there are any outliers?
The mean output power is 42 watts, with a standard deviation of 8 watts Assuming a confidence level of 95%, which of the following statements do these data support?
The errors of 17 students follow. Analyze the errors with a Mann-Whitney U test and write a conclusion about the effects of noise on reading.
Student determines how many minutes it would take for each method of assistance and how many points it might gain for him on the final. The method and estimates follow. Where should student seek help to be most effective?
If 55 people are chosen at random, what is the probability that the sample mean of IQ scores will not differ from the population mean by more than 2 points?
Continuation. In practice it might be of interest to determine the value of a in the previous problem in order to minimize some quantity of interest
The probability that the Klamath Hydro Project generates less than 34 MW during any randomly selected year is 0.3540. Find the standard deviation.
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