How many different sequences of three notes are possible
A song writer wishes to compose a melody. Each note in the melody must be one of the 14 notes in her vocal range. How many different sequences of 3 notes are possible?
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Find the mean and standard deviation of the number of cars that have more than 1 passenger among the 500 cars stopped at a cordon-point for a survey. Assume that 5% of all cars have multiple passengers (compared to driver-only cars).
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What is the probability that two have no checkups, four will have one checkup and one will have two checkups in the next year?
the distance light moves in one second),(Ta, Xa,Ya,Za)= (4.5 s,1.3 ls, .3 ls, 5.6 ls) in a frame S, and event B happeneds at the coordinates (t'b,x'b,y'b,Z'b)= (-1.4 s, 29.1 ls, .3 ls, 5.6 ls) in another frame S' along in the +x-axis at a speed
Each note in the melody must be one of the 14 notes in her vocal range. How many different sequences of 3 notes are possible?
Estimate the mean wait time using a 99% confidence interval. Assume that wait times are normally distributed.
The blocks can be distinguished only by color. If the child lines up the blocks in a row at random, calculate the following probabilities: Red blocks appear at both ends.
Buyer behavior is at the core of marketing. All marketing programs need to begin with an understanding of why and how consumers buy what they do.
A local social service agency is asked to determine areas in the greatest need of social support. The neighbourhoods that are identified as being in need of assistance will qualify for the city's new employment assistance.
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Its key advantage is high internal validity; its disadvantage is that randomization is often ethically or practically impossible.
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