It is estimated 29% of all adults in United States invest in stocks and that 85% of U.S. adults have investments in fixed income instruments (savings accounts, bonds, etc.). It is also estimated that 25% of U.S. adults have investments in both stocks and fixed income instruments.
(a) What is the probability that a randomly chosen stock investor also invests in fixed income instruments? Round your answer to decimal places.
(b) What is the probability that a randomly chosen U.S. adult invests in stocks, given that s/he invests in fixed income instruments? Round your answer to decimal places.
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It is estimated 29% of all adults in United States invest in stocks and that 85%...
It is estimated 30 % of all adults in United States invest in stocks and that 84 % of U.S. adults have investments in fixed income instruments (savings accounts, bonds, etc.). It is also estimated that 26 % of U.S. adults have investments in both stocks and fixed income instruments. (a) What is the probability that a randomly chosen U.S. adult invests in stocks, given that s/he invests in fixed income instruments? Round your answer to 2 decimal places. (b)...
It is estimated that 27% of all Callfornia adults are college graduates and that 31% of California adults are regular internet users. It is also estimated that 21% of California adults are both college graduates and regular internet users. Answer the questions below. (If necessary, consult a list of formulas.) (a) Among California adults, what is the probability that a randomly chosen internet user is a college graduate? Round your answer to 2 decimal places. $ E (b) What is...
It is estimated that during the past year, 26% of all adults visited a therapist and 45% of all adults used non prescription antidepressants. It is also estimated that 22% of all adults both visited a therapist and used a non-prescription antidepressant during the past year, Answer the questions below. (If necessary, consulta list of formulas.) х 5 ? (a) An adult who visited a therapist during the past year is randomly selected. What is the probability this adult used...
eBook In an article about investment alternatives, Money magazine reported that drug stocks provide a potential for long-term growth, with over 51% of the adult population of the United States taking prescription drugs on a regular basis. For adults age 65 and older, 85% take prescription drugs regularly. For adults age 18 to 64, 48% take prescription drugs regularly. The age 18-64 age group accounts for 83.6% of the adult population (Statistical Abstract of the United States, 2008) Round your...
About 1/4 of all adults in the United States have type O+ blood. If three randomly selected adults donate blood, find the probability of each of the following events. (Round your answers to four decimal places.) A. Two out of the three are type O+.
Problem 2-27 (Algorithmic) In an article about investment alternatives, Money magazine reported that drug stocks provide a potential for long-term growth, with over 50% of the adult population of the United States taking prescription drugs on a regular basis. For adults age 65 and older, 86% take prescription drugs regularly. For adults age 18 to 64, 48% take prescription drugs regularly. The 18-64 age group accounts for 81.7% of the adult population (Statistical Abstract of the United States, 2008). a....
About 6% of employed adults in the United States held multiple jobs. A random sample of 69 employed adults is chosen. Use th TI-84 Plus calculator as needed. Part 1 of 5 (a) Is it appropriate to use the normal approximation to find the probability that less than 6.6% of the individuals in the sample hold multiple jobs? If so, find the probability. If not, explain why not. It is appropriate to use the normal curve, since np - 4.14...
Uninsured Patients: It is estimated that 16.8% of all adults in the U.S. are uninsured. You take a random sample of 240 adults seen by a certain clinic and find that 47 (about 20% of them) are uninsured. (a) Assume the 16.8% value is accurate. In all random samples of 240 U.S. adults, what is the mean and standard deviation for the number of those who are uninsured? Round both answers to 1 decimal place. μ = σ = (b)...
About 6% of employed adults in the United States held multiple jobs. A random sample of 69 employed adults is chosen. Use the TI-84 Plus calculator as needed. Part 1 of 5 (a) Is it appropriate to use the normal approximation to find the probability that less than 6.6% of the individuals in the sample hold multiple jobs? If so, find the probability. If not, explain why not. It is appropriate to use the normal curve, since np - 4.14...
An alarming number of U.S. adults are elther overweight or obese. The distinction between overweight and obese is made on the basis of body mass index (BMID, expressed as weight/height2. An adult is considered overweight if the BMI is 25 or more but less than 30. An obese adult will have a BMI of 30 or greater. According to a January 2012 article in the Journal of the American Medical Association, 331% of the adult population in the United States...