What percentage of iqs are less for normal distribution
Consider the normal distribution of IQs with mean of 100 and a standard deviation of 16. What percentage of IQs are less than 120?
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The annual income was $58,700 with a standard deviation of $1,500. Find a 95% confidence interval for the true mean annual income of the nursing school alumni.
What is the probability that if an assistant manager is chosen at random then his income is between 35,000 and 40,000?
A study was conducted to assess the effectiveness of a health promotion program to improve the level of fitness of children aged 5-9 years.
The daily amount of coffee, in liters, dispensed by a machine located in an airport, lobby is a random variable X having a continuous uniform distribution with A = 7 and B = 10. Find the probability that on a given day the amount, of coffee dispen
Your consulting company has been hired by an airline to analyze data on passenger and luggage weights. The data refer to a 200 seat aircraft that is always full.
One-sixth of the male freshmen entering a large state school are out-of-state students. If the students are assigned at random to the dormitories, 180 to a building, what is the probability that in a given dormitory at least one-fifth of the stude
Suppose the monthly income of assistant managers of our local banks are normally distributed with mean of 40,000 and a standard deviation of 5,000. What is the z score for an income of 42,000?
Product filling weights are normally distributed with a mean of 350 grams and a standard deviation of 15 grams.
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