Historically, 40% of adults in the United States have said that they could not cover a $400 unexpected expense without borrowing money or going into debt. In a recent 2021 random sample of 765 adults in the United States, 322 say they could not cover a $400 unexpected expense without borrowing money or going into debt. What is the point estimate? 0.421 0.400 0.021 O $400

Historically, 40% of adults in the United States have said that they could not cover a $400 unexpected expense without borrowing money or going into debt. In a recent 2021 random sample of 765 adults in the United States, 322 say they could not cover a $400 unexpected expense without borrowing money or going into debt. What is the point estimate? 0.421 0.400 0.021 O $400

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

In a certain county in 2013, it was thought that 50% of men 50 years old or older had never been screened for prostate cancer. Suppose a random sample of 50 of these men shows that 40 of them had never been screened. a. What is the observed frequency of men who said they had not been screened? b. What is the observed proportion of men who said they had not been screened? c. What is the expected number in the sample to say they had never been screened if 50% is the correct rate? a. The observed frequency of men who said they had not been screened is (Type an integer or a decimal. Do not round.) b. The observed proportion of men who said they had not been screened is (Type an integer or a decimal. Do not round.) c. The expected number in the sample to say they had never been screened if 50% is the correct rate is (Type an integer or a decimal. Do not round.)
According to a 2009 Reader's Digest article, people throw away about 12% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 180 grocery shoppers to investigate their behavior. What is the probability that the sample proportion does not exceed 0.08? Enter your answer as a number accurate to 4 decimal places.)
The chance of winning a lottery game is 1 in approximately 22 million. Suppose you buy a $1 lottery ticket in anticipation of winning the $6 million grand prize. Calculate your expected net winnings for this single ticket. Interpret the result.
Is this right?
A company offers a 2-year warranty on a product for $35. Replacing the product to the consumer who purchases the warranty costs the company $200. The quality control division estimates that 0.25% of their products will fail within the fırst 2 years. What is the company's expected value for each warranty sold?
Although studies continue to show smoking leads to significant health problems, 20% of adults in the United States smoke. Consider a group of 250 adults. If required, round your answers to four decimal places. Use Table 1 in Appendix B. If your answer is zero, enter "0". a. What is the expected number of adults who smoke? b. What is the probability that fewer than 30 smoke? Used continuity correction factor. c. What is the probability that from 55 to 70 smoke? Used continuity correction factor. d. What is the probability that 70 or more smoke? Used continuity correction factor.
Assume that the probability of a security breach is 1 percent. The chance of your computer system being damaged during such an attack is 5 percent. If the system is damaged, the average estimated damage will be $ 50 million. What is the expected loss in dollars? In the above question, an insurance agent is willing to insure your facility for an annual fee of $35,000.00. Should the company accept the offer based on the cost benefit analysis?
A random sample of stipends for teaching assistants in economics is listed. Is there sufficientevidence at a = 0.0 level to conclude that the average stipend greater than $15,000?S14.000 $18,000 $12,000 $14,356 $13,185 $13,419 $14.000 $11,981 $17,604 $12,283 $16,338 $15.000
Please solve the attached question, thanks
In a certain study, the chance of encountering a car crash on the road is stated as 20%. Express that as a probability (which means it should be written as a decimal or a reduced fraction.)
A study reveals that 82% relationships end in the first two years. A random sample of 100 newly formed couples isselected.a. What is the probability that the sample proportion is less than 0.80?b. What is the probability that the sample proportion is within ±0.02 of the population proportion?
An auditor for Health Maintenance Services of Georgia reports 40 percent of policyholders 55 years or older submit a claim during the year. Twenty policyholders are randomly selected for company records. (Binomial Dist.) a. How many of the policyholders would you expect to have filed a claim within the last year? ie. The mean value. b. What is the probability that 10 of the selected policyholders submitted a claim last year? c. What is the probability that 10 or more of the selected policyholders submitted a claim last year?