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Determine whether the mean, median, or mode would be the best choice to describe the center of the following set of data. An elementary school has 92 first graders. Depending on when their birthday falls, the first graders might be six, seven, or eight on the last day of the school year. Would it be best to use the mean, median, or mode to describe the typical age of the first-graders? ANSWER:___________ (Select between mean, media and mode)
Use the data from the variable ("avgspeed") created in the previous exercise to recode the values into a nominal (string) variable. Your task is to use SPSS's.
The sample mean is 60 kilograms (kg). Suppose that the mean weights of male runners follow a normal distribution with unknown mean mu and standard deviation of 5 kg (sigma). What is the 95% confidence interval for mu?
a. Why would the random variable y, defined as y 5 x2 2 x1, be of interest to the furniture manufacturer? b. What is the mean value of the random variable y? c. Assuming that x1 and x2 are independent, what is the standard deviation..
Approximate the sample statistics given the following frequency distribution. Hint: Use calculator to calculate mean, standard deviation.
there is some evidence suggesting that you are likely to improve your test score if you rethink and change answers on a
Let N(m, v) denote the normal random variable with mean m and variance v.
Suppose the number of tickets written per day follow a poisson distibution with a mean of 8.5. Interpret the value of the mean.
the gauss markov theorem shows that ols is blue . so we of course hope and expect that our coeffcient estitames will
Here are data on attitudes toward coffee filters made of recycled paper. The data was gathered from a random sample. What is the conditional distribution of opinion about quality of recycled coffee filters for buyers?
Explain with the help of a text or personal example, the use and application of Bayes' approach. Briefly, what is the history of Bayesian statistics
A consumer organization wants to know whether there is a difference in the mean price of a particular toy at three different types of stores.
An American put option to sell a swiss franc for dollars has a strike price of $0.80 and a time to maturity of one year. The volatility of the swiss franc is 10%
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