Percentage of college students
The number of hours college students spend working per week has normal distribution with mean of 22 hours and standard deviation of 6 hours. Find out the percentage of college students who work between 16 and 28 hours per week.
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Supposing that the population sampled is normal, develop a 95 percent confidence interval for the corresponding true mean.
The wearout of mileage of Sparky All Weather tire is normally distributed with a mean of 33000 miles and a standard deviation of 2600 miles.
Assume that P(x) signifies percentage of income spent on automobile insurance in year x and I(x) signifies income in year x. Find the function A which signifies total automobile insurance expenditures in year x.
Suppose that 21 year old men's heart rates at rest are normally distributed with mean of 72 beats per minute. If 600 men are examined, how many would you expect to have the heart rate of less than 73?
If X is the normal random variable with standard deviation 4.00, and if the probability that X is more than 5.52 is .1271 (as shown below), then what is the mean of X? (Note: the diagram is not necessarily to scale.)
Draw the graph of function by (i) applying Leading Coefficient Test, (ii) determining zeros of polynomial, (iii) plotting adequate solution points
The rock is thrown downward from top of the 40.0 m tower with the initial speed of 12 m/s. Suppose negligible air resistance, find speed of rock just before hitting ground?
2 people are 50 yrs old and 24 yrs old respectivly in x years from now there age can be represented by x+50 and x+24. Utilize long division to compute ratio of older persons age to younger persons age in x years.
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