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According to government data, 25% of employed women have never been married.
(a) If 10 employed women are selected at random, what is the probability that exactly 2 have never been married? Give answer with 4 decimals.
(b) What is the probability that 2 or fewer have never been married?
If on the other hand, he believes that the probability that he will get offers from both companies is 0.5, what is the probability that he will get at least one offer from these two companies?
Findout the value of X using normal distribution which gives standard deviation also mean. A math teacher gives two different tests to measure students' aptitude for math.
An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed. If a sample of 16 bulbs has an average life of 50 hours and the population standard deviation is known to be 10 hours.
I need to find the maximum and minimum surface areas for 2 cubes with a total volume of 432 in^3. No other perameters are specified. I've been able to use common sense to find the max is 432 sq/inches
for each individual the probability that they will pass the proficiency exam independant of their classmates is .99.
At least half the patients are under 15 years old? First, describe how this can be modelled as a binomial distribution with 8 trials, where success is visitor age is under 15 years old and the probability of success is 20 percent.
A simple random sample of 60 voters will be drawn from this population. The chance the sample contains only Republicans and Democrats is?
One of the herpetologists fears that pollution might be affecting the natural growth of the pythons. Do you think this sample result is unusually small? Explain. Show work.
Rodney partida is an American who is of Mexican ancestry. He was convicted of burglary with intent to commit rape. Use the "rule of thumb" to find the minimum usual number and the maximum usual number of Mexican-americans.
The sample mean and the standard deviation were determined to be 120 and 40 respectively. The standard error of the mean is?
Medical schools last year intended to specialize in family practice. What is the width of a 90% confidence interval for the proportion that plan to specialize in family practice.
Dividend is expected to grow 7% a year for next 3 years and then at 5% a year after that. Determine the expected dividend per share for each of the next five years?
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