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Find the indicated probabilities.
1. Find the probability that a normal random variable X with mean µ = 1600 and standard deviation σ = 200 is at least 1900.
2. IQ scores for adults are normally distributed with mean µ = 100 and standard deviation σ = 15. What percent of adults have IQ scores greater than 130?
Build regression models for predicting house prices. We will be using data collected on 91 houses in Gainesville, Florida. The dataset contains the selling price of each house and information on four other explanatory variables.
give an example of how anova may be useful for your area of research. state a null and alternative hypothesis and
A report of the National Center for Health Statistics says that the heights of 20-year-old men have mean 176.8 centimeters (cm) and standard deviation 7.2 cm. There are 2.54 centimeters in an inch. What are the mean and standard deviation in inch..
First k is repeated (possibly by using some of the first k flips). Show that the expected number of additional flips after the initial k is 2^k?
Estimate the indicated probability by using the normal distribution as an approximation to the binomial distribution.
Suppose that a large corporation surveys all of their employees, and finds that 24% of them carry secondary health insurance. A representative from GoldStar Care visits 100 employees
Would you have included more and/or different variables? Explain your answer. What would you have done differently in this case? Why?
A part is produced with a mean of 6.2 ounces and a standard deviation of 0.2 ounce. What is the probability that the weight of 100 such items is between 6 l6 and 624 ounces?
Let Sn denote the total of the outcomes through the nth toss. Show that there is a limiting value for the proportion of the first n values of Sn that are divisible by 7, and compute the value for this limit. Hint : The desired limit is an equilibrium..
a law requires the average level of co carbon monoxide in city air to be no more than 9 parts per million ppm. a
If a given company in this industry has 1,000,000 workerhours devoted to production each year, what is the probability that the next fatal injury in this company will not occur until at least 30 years from now?
it is estimated that 56 of the children between the ages of 3 and 5 years are already enrolled in school. in a sample
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