Probability that a family spends
The mean amount spent by a family of four on food per month is $500 with a standard deviation of $75. Supposing that the food costs are normally distributed, determine the probability that a family spends less than $410 per month?
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Either illustrate the following equation is true , or determine the value of x for which equation is false. Determine exact value of cos 525.
It has been conjectured by the U.S. Census Bureau that "approximately 60% of the foreign-born people who live in U.S. are not naturalized citizens". Assume that in a national random sample of 70 foreign-born people who live in U.S. that exactly 32
An octave contains twelve distinct notes (on a piano, five black keys and seven white keys). How many different eight-note melodies within a single octave can be written if the black keys and white keys need to alternate?
Compute the difference between a standard error and a t-test?
Light house is 2 units high, and sits at edge of the cliff above ocean. The displacement vector between boat and base of light house is?
In a suburban area, past records revealed that 50 percent of all the high school graduates go to college. From 20 graduates selected at random, determine the probabililty that exactly 8 will go to college?
Determine amplitude, phase shift, period, and vertical shift. Compute maximum and minimum monthly average temperature and months when they happen.
Flying with wind, same plane travels 5800km in 5 hours. Determine the rate of plane in still air and find the rate of the wind?
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