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The Flying time of a drone airplane has a normal distribution with mean 4.76 hours and standard deviation of .04 hours. What is the probability that the drone will fly less than 4.66?
The numbers in the row labeled x are the number of hours spent in the batting cages each week. The numbers in the row labeled y are the number of wins produced for that year.
Estimate the difference between the proportion of the population of low birth weight children and the proportion of the population of normal birth weight children who graduate from high school. Report a standard error for your estimate.
Assuming that the data constitute independent random samples from normal populations with equal variances, construct a 99% confidence interval for the difference between the true average heat-producing capacities of coal from the two mines.
A person estimates that his commute to work will most likely take 50 minutes. However, it could talk as long as 1 hour and 35 minutes worst case, or as little as 35 minutes best case. What is the approximate standard deviation based on the ab..
An RCMP officer would like to estimate the true mean speed of all vehicles along a particular stretch of highway. She measures the speeds of a simple random sample of 40 vehicles and calculates a mean speed of 114.55 km/h. The population stan..
The Environmental Protection Agency (EPA) warns communities when their tap water is contaminated with too much lead. Drinking water is considered unsafe if the mean concentration of lead is 15.5 parts per billion or greater.
A randomly chosen individual makes 3 claims
Match the linear correlation coefficient to the scatter diagram.
A company makes cartons finds the probability of producing a carton with a puncture is 0.03, the probability that a carton has a smashed corneris 0.06, and the probability that a carton has a puncture and a smashed corner is .002. If a quality contr..
Research Scenario in which z-score is valuable
Give the estimated demand equation for predicting restaurant sales and provide an interpretation for each of the regression coefficients.
1) Gather preliminary data about HIV/ AIDS in ruralcommunities in South Africa. Use the Centers for Disease Control and Prevention website (www.CDC.gov) and the National Census website.2) Use the data sets available for download to analyze them accor..
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