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Here's the q': In a recent survey amongst college students, it was found that 40% were graduates of public schools. The survey revealed that 20% of college students are maintaining a GPA of at least 2.5. A student is selected at random and found to have a GPA of less than 2.5, what is the probability that the student is from a private school?
The top food snacks consumed by adults aged 18-54 are gum, chocolate candy, fresh fruit, potato chips, breath mints/candy, Ice cream, nuts, cookies, bars, yogurt, and crackers.
Can you tell me what are the advantages and limitations of applying nonparametric tests in solving business problems?
We wish to determine whether the homicide rate is different in different parts of the country and, if it is different, what is the pattern. We have data on 36 states - 9 each in the four regions Northeast, Midwest, South and West.
Pilots who cannot maintain regular sleep hours due to their work schedule often suffer from insomnia. A recent study on sleeping patterns of pilots focused on quantifying deviations from regular sleep hours.
Write the example of statistics in news to explain the following statement which represents one of the objectives of statistics analysis: "Statistics assists us make decisions.
The national average SAT score (for Verbal and Math) is 1028. If we assume a normal distribution with σ = 92, what is the 90th percentile score? What is the probability that a randomly selected score exceeds 1200?
A study concluded that waist to hip ratios are a better predictor of 5-year survival than more traditional height-to-weight ratios.
The margin of error for a sample size 25 is +-3. Will the margin of error be greater or less if the sample size is 400? What is the new margin of error?
A researcher is studying IQ levels. From past experience she knows the population mean IQ for adults is 110 and the standard deviation is 15.
If the packets are sold in multi-packs containing six packets, what is the distribution of the number of prizes in a randomly chosen multi-pack?
A random sample of size 25 is taken from a normal population having a mean of 80 and a standard deviation of 5. A second random sample of size 36 is taken from a different normal population having a mean of 75 and a standard deviation of 3.
Find the 90%, 95% and 99% confidence intervals for the proportion of all voters who favor the issue. How many more voters should we include in the sample if we need to reduce the margin of error by half?
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