Expected number of spots showing
Suppose that the number of dice thrown is a binomial random variable with n = 10 and p = 0.98. What is the expected number of spots showing on the thrown dice? Expected number of spots =
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The time, T, between emissions radioactive emissions has an eponential distribution with a mean of 4 seconds between emissions.
What is the critical t value at the 10% level of significance? OF. The researcher is interested in determining whether there is evidence that the two processes yield different average errors. THe population standard deviations are unknown but are
What is the value of SP for the following set of data? Explain answer and show work, please.
A researcher calculates a statistical test and obtains a p value of .86. He decides to reject the null hypothesis. Is this decision correct, or has he committed a Type I or Type II error?
The following data set gives values of oxygen capacity values while the participants pedaled at a specified rate on a bicycle ( 14, 16, 18,19, 20, 21, 21, ,21, 22, 23, 23, 24, 26, 35, 36 ). Are there any outliners? Check mild and extreme criterio
A recent study of robberies for a certain geographic area showed an average of 1 robbery per 20,000 people. In a city of 80,000 people, find the probability of the following:
In a Poisson probability problem, the rate of errors is one every two hours. To find the probability of three defects in four hours, which lambda and x variable values should be used?
A random sample of records of electricity usage of homes gives the amount of electricity used in July and size (in square feet) of 135 homes. A regression was done to predict the amount of electricity used (in kilowatt-hours) from size. The residu
A medical research team studied the number of head and neck injuries sustained by hockey players. Of the 319 players who wore a full-faced shield, 195 sustained an injury.
Suppose IQ scores were obtained from randomly selected twins. For 20 such pairs of people, the linear correlation coefficient is 0.897 and the equation of the regression line isy= 1.58 + 1x, where x represents the IQ score of the twin born first.
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