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Given that the scores on a medical test follow a normal distribution with a mean of 460 and a standard deviation of 100. If all students in a class of 41 attend the test what is the probability that the given class will obtain a mean score of above 589.93?
Consider the following stemplot. The mean of the data represented in this stemplot ?
does a follow-up reminder increase the renewal rate on a magazine subscription? a magazine sent out 760 subscription
If we assume that the distribution of ages is mound-shaped and symmetric. What percentage of the respondents will be between 64.29 and 93.54 years old?
Select a random variable to represent the category. Produce a probability mass function for that variable, and use it to compute the mean, the median and the variance of the data in the data set. Show the probability mass function, both in tabular..
For an arch chosen at random in Arches National Park, use the preceding information to estimate the probability that the height of the arch poening is:
Determine mean and standard deviation for the population. Draw the distribution and locate two scores on the sketch.
if we want to use mileage color andor condition of the vehicle on a sample of 2009 chevy corvette zr1 cars to predict
If you are using the method of least squares for fitting trends in an annual time series containing 25 consecutive yearly values,
the united nations released the following annual birth rates and suicide ratesfor selected countriescountrybirth rate
a survey found that womens heights are normally distributed with a mean 64.4 in. and a standard deviation 2.5 in. a
In testing the equality of the two means below, what is the test statistic? (Use the unequal variances formula)
a population has a mean 72 and standard deviation 12. find the mean and standard deviation of a sampling distribution
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