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Consider 50 independent flips of a coin having probability 0.4 of landing on heads. We say that a changeover occurs when an outcome is different from the one preceding it. Find the expected number of changeovers.
E[changeovers]=
in a large population 95 of the households have cable tv. a simple random sample of 64 households is to be contacted
For the control group, the mean was 70.3 and the standard deviation was 8.3. (a) Do beta-blockers reduce the pulse rate? State the hypotheses and do a t test.
Grand Strand Family Medical Center is specifically set up to treat minor medical emergencies for visitors to the Myrtle Beach area. There are two facilities, one in the Little River Area and the other in Murrells Inlet.
what is the required sample size is the error is to be less than 1/2 hour with a 95% level of confidence?
In a previous example about the body mass index of young women we developed a 95% confidence interval for the mean body mass index
Recall that the trash bag manufacturer has concluded that its new 30 gallon bag will be the strongest such bag on the market if its mean breaking strength is at least 50 pounds.
researchrs found that a person in a particular country spen an average of 5.6 hours a day watch tv in 2010. assume the
a committee of 3 people is formed from 6 women and 4 men. what is the cumulative probability function for the number of
an iq test is designed so that the mean is 100 and the standard deviation is 22 for the population of normal adults.
Estimate the probability the store will gross over $850 a) Fewer than 5 out of 10 business days.
a recent poll of 700 people who work indoors found that 278 smoke. if the researchers want to be 98 confident of their
the average life expectancy of tires produced by the whitney tire company has been 40000 miles. management beliveves
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