In a local university, 70% of the students live in the dormitories. A random sample of 75 students is selected for a particular study. The probability that the sample proportion (the proportion living in the dormitories) is at least 0.60 is
A. 0.0294.
B. 0.9706.
C. 0.0228.
D. 0.9772.
Answer: B
You might also like to view...
Book value is the original cost of an asset less the salvage value of the asset
Indicate whether the statement is true or false
In 1997, U.S. Customs adopted a "checklist" that provides an absolute legal standard of reasonable care to be used by importers
Indicate whether the statement is true or false
Which of the following statements about external and internal loss-financing techniques is not correct?
A) Self-insurance is a form of internal loss-financing. B) Risk retention is a form of internal loss-financing. C) Insurance is a form of external loss-financing. D) Captive insurance is a form of external loss-financing.
It is believed that the median yearly income in a suburb of Atlanta is $70,000 . A sample of 67 residents was taken. Thirty-eight had yearly incomes above $70,000, 26 had yearly incomes below $70,000, and 3 had yearly incomes equal to $70,000 . The null hypothesis to be tested is H0: Median = $70,000. To test the null hypothesis, the appropriate probability distribution to use is
a. normal. b. chi-square. c. t distribution. d. binomial.