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A contractor is considering a sale that promises a profit of $3300 with a probability of 0.7 or a loss of $1600 with a probability of 0.3. What is the expected profit
What is a dummy variable, and how is it useful to multiple regression? Give an example of three dummy variables that could be used in describing your home town.
What is the probability that a randomly selected senator is up for reelection in November 2016?
What is the critical value for a right-tailed test with x = 0.01 of a large population?
for the following sample8 1 51 5a. find the mean and the standard deviation.b. now change the score of x8 to x18 and
1 you did a two-tailed t test for means equality and in step 2 you got a t value of 2.333. assuming 22 degrees of
For this case, we will examine some hypothetical data concerning interest rates and the number of housing starts per month. A new "housing start" is counted when a contractor begins construction of a new private house.
What is the expected number of crimes that will be solved? What is the standard deviation?
pick a card from a regular 52-card deck and record the suit then toss a coin and record heads or tails. let a be the
The length of country and western songs is normally distributed and has a mean of of 170 seconds with a standard deviation of 49 seconds. find the probabality that a random collection of 16 songs will have a mean of 158.30 seconds or less?
A reading specialist tests the reading speed of children in four ninth-grade English classes.- What is the mean reading speed for all classes combined?
two points are selected at random independentlyand uniformly along a 1-meterlong stick and the stick is broken at the
suppose you have a normal distribution of values with a mean of 70 and a standard deviation of 4.5. find the
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