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In the following problem, check that it is appropriate to use the normal approximation to the binomial. Then use the normal distribution to estimate the requested probabilities.
More than a decade ago, high levels of lead in the blood put 84% of children at risk. A concerted effort was made to remove lead from the environment. Now, suppose only 14% of children in the United States are at risk of high blood-lead levels.
(a) In a random sample of 216 children taken more than a decade ago, what is the probability that 50 or more had high blood-lead levels? (Round your answer to three decimal places.)
(b) In a random sample of 216 children taken now, what is the probability that 50 or more have high blood-lead levels? (Round your answer to three decimal places.)
If the leaf is the hundredths digit, what is the stem for the number 34.679?
Suppose two events are independent. One event has probability 0.27, while the other has probability 0.64.
This assignment involves displaying an understanding of an independent t-test. Based on my hypothetical research question: What do early childhood educators report about their experiences with fathers' involvement in their programs?
A medium-sized facility-a clinic where several doctors work in partnership.A small medical facility-an office for one or two doctors.
Does your choice from a) agree with the results from b) and c)? Explain.
What is the difference between a parameter and a statistic? Describe an example. Finally, there are "adjustments" that statisticians make to statistics
A typical problem statement is correlation research is _____________
an industrial hygienist want to be able to estimate the level of carbon monoxide in a plant at the a 0.01 level.
in terms of hypotheses one of the major differences between the t-test and anova is thata. ha is never defined with
Assume that demand for services per period is Pt = 1000 - Qt where Qt is the stock of the durable consumed. Let the discount factor for both consumers and the firm be one.
Find the largest number of room reservations that this hotel can book- find the probability that at least 90% of the available rooms will be occupied on a given night.
The supervisor of an orange juice bottling company is considering the purchase of a new machine to bottle 16 fluid ounces (473 mL) bottles of 100% pure orange juice and wants an estimate of the difference in the mean filling weights between the ne..
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