Question

In: Statistics and Probability

A recent survey found that 70% of all adults over 50 wear glasses for driving. In...

A recent survey found that 70% of all adults over 50 wear glasses for driving. In a random sample of 10 adults over 50, what is the probability that exactly six wear glasses?

Please round answer to the ten-thousandths place (4 places).

Solutions

Expert Solution

orchestra answered 2 years ago
Next > < Previous

Related Solutions

A recent survey found that 63% of all adults over 50 wear glasses for driving. Ia...
A recent survey found that 63% of all adults over 50 wear glasses for driving. Ia random sample of 100 adults over 50 was selected., a). what is the expected value and standard deviation of the number of adults over 50 who wear glasses? b). Find the probability that more than 60 of the adults over 50 wear glasses. Hint: using normal distribution to approximate binomial distribution.
A recent study found that 70% of all people over 60 years of age wear glasses....
A recent study found that 70% of all people over 60 years of age wear glasses. If a random sample of 8 people over 60 years of age was selected, find these probabilities: a) Exactly 4 people will wear glasses. b) At most 2 people will wear glasses. c) At least 2 people will wear glasses. Show work and use binomial probability table.
In the United States, 75 percent of adults wear glasses or contact lenses. A random sample...
In the United States, 75 percent of adults wear glasses or contact lenses. A random sample of 10 adults in the United States will be selected. Which of the following is closest to the probability that fewer than 8 of the selected adults wear glasses or contact lenses?
Pinworm: In a random sample of 830 adults in the U.S.A., it was found that 70...
Pinworm: In a random sample of 830 adults in the U.S.A., it was found that 70 of those had a pinworm infestation. You want to find the 95% confidence interval for the proportion of all U.S. adults with pinworm. (a) What is the point estimate for the proportion of all U.S. adults with pinworm? Round your answer to 3 decimal places. (b) Construct the 95% confidence interval for the proportion of all U.S. adults with pinworm. Round your answers to...
(Survey from 9.41: In a survey of 446 students, it was found that 50% of the...
(Survey from 9.41: In a survey of 446 students, it was found that 50% of the sampled students lived on campus and 50% lived off campus.) In the same survey used in 9.41, 88% of the sampled students were right-handed. a. The proportion of all people who are right-handed is said to be 0.88. Tell the value of standardized sample proportion z, if we want to test whether the proportion of all students who are right- handed could be 0.88....
In a certain community, 4 percent of all adults over the age of 50 have tuberculosis...
In a certain community, 4 percent of all adults over the age of 50 have tuberculosis (T.B.). A health service in this community correctly diagnoses 98 percent of all persons with T.B. as having the disease, and incorrectly diagnoses 3 percent of all persons without T.B. as having the disease. Find the probabilities that, a) the community health service will diagnose an adult over 50 as having T.B., b) a person over 50 diagnosed by the health service as having...
In a certain community, 4 percent of all adults over the age of 50 have tuberculosis...
In a certain community, 4 percent of all adults over the age of 50 have tuberculosis (T.B.). A health service in this community correctly diagnoses 98 percent of all persons with T.B. as having the disease, and incorrectly diagnoses 3 percent of all persons without T.B. as having the disease. Find the probabilities that, a) the community health service will diagnose an adult over 50 as having T.B., b) a person over 50 diagnosed by the health service as having...
A recent survey found that 22% of all people 16 years of age and older do...
A recent survey found that 22% of all people 16 years of age and older do volunteer work. Suppose a random sample of 350 people 16 years of age and older is taken. What is the probability that more than 24% of the people in the sample do volunteer work? a) 0.1894 b) 0.8106 c) 0.1841 d) 0.8159
A recent survey found that about 72.5% of all gasoline purchases at a certain service station...
A recent survey found that about 72.5% of all gasoline purchases at a certain service station chain are paid with a credit or debit card. If 300 gasoline purchases completed at this chain are randomly selected, find the probability that at most 210 of those purchases are paid with a credit or debit card. Use a TI-83, TI-83 plus, or TI-84 calculator to find the probability.
A nationwide survey of working adults indicates that out of 100 adults, 50 of them are...
A nationwide survey of working adults indicates that out of 100 adults, 50 of them are satisfied with their jobs. The president of a large company believes that more than this number of employees at his company are satisfies with their jobs. To test his belief, he surveys a random sample of 100 employees, and 59 of them report that they are satisfied with their jobs. Do you support president’s statement about the employees satisfaction? (Use α = 0.05 level...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT