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An IQ test is designed so that the mean is 100 and the standard deviation is 16 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% confidence that the sample mean is within 8 IQ points of the true mean. Assume that sigma = 16.
The required sample size is __. (Round up to the nearest integer.)
Of the drivers who stop at a gas station, 92% purchase gasoline, and 6% purchase both gasoline and oil. A total of 7% purchase oil.
According to a report produced by the New South Wales Ministry of Health, 46% of hospitalisations occur in people aged sixty years and over (60+).
The number of phone calls coming into a switchboard in the next five minutes will either be 0, 1, or 2. The probabilities are the same for each of these (1/3).
tracking a ballistic missile with normal distribution measurement errorthe trajectory meters secondsxt -196000 980t
Compute a 95% confidence interval for the population mean, based on the sample 1, 2, 3, 4, 5, 6, and 30. Change the number from 30 to 10 and recalculate the confidence interval.
Perform the sensitivity analysis for the COM-TECH case. Assume you are interested in following two probabilities: probability of receiving grant, and probability of high cellular R&D costs.
The random variable xi represents the number of complaints, and p(xi) is the probability of receiving xi complaints.
Use the mixed congruential method to generate a sequence of three three-digit random integer numbers such that xn+1 ≡ (201xn + 503) (modulo 1,000) and x0 = 485.
A behavioral research situation that could use a Pearson coefficient research study and a chi square research study. Present the rationale for each selection. Be very specific in your presentation.
let x and y be independent random variables with uniform density functions on 01. finda. eabsx-yb. emaxxyc. eminxyd.
Formulate and test an appropriate set of hypotheses to determine if the machine can be qualified. Use a = 0.05. Find the P-value.
What does this data set imply about the possibility of predicting the boiling point of compounds in this series on the basis of the number of carbon atoms? Compute the correlation coefficient between these two variables, even though the number n i..
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