The accuracy of a census report on a city in southem California was questioned by some govemment officials. A random sample of 1215 people living in the city was used to check the report, and the results are shown below. Census Percent 10% 3% 38% 41% Ethnic Origin Sample Result Black Asian Anglo Latino/Latina Native American All others 129 47 465 508 53 13 2% Using a 1% level of significance, test the claim that the census distribution and the sample distribution agree.

The accuracy of a census report on a city in southem California was questioned by some govemment officials. A random sample of 1215 people living in the city was used to check the report, and the results are shown below. Census Percent 10% 3% 38% 41% Ethnic Origin Sample Result Black Asian Anglo Latino/Latina Native American All others 129 47 465 508 53 13 2% Using a 1% level of significance, test the claim that the census distribution and the sample distribution agree.

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 8E: List the sample space of each experiment. Picking a one-digit number

See similar textbooks

Similar questions

What is meant by the sample space of an experiment?
List the sample space of each experiment. Selecting a letter of the alphabet
List the sample space of each experiment. Picking a one-digit number
What is a sample space?
In a survey, it was found that consuming fruit juices is not as healthy as consuming fruit. It is believed that fruit juices contain artificial flavors and preservatives (Source: http://www.fda.gov/food/guidanceregulation/guidancedocumentsregulatoryinformation/labelingnutrition/ucm064880.htm). Assume that in a survey to assess whether or not people believe fruit juices contain artificial flavor, 53% believed that fruit juices contain artificial flavors. In a random sample survey of 100, construct a 95% confidence interval for the population proportion who believe that fruit juices contain artificial flavors. Do the results indicate that the majority of the population believes that they contain artificial flavors? Now modify the sample from 100 to3,600, construct a 95% confidence interval for the population proportion that believes that fruit juices contain artificial flavors. What do the results indicate now?
A grassroots group opposed to a proposed increase in the gas tax claimed that the increase would hurt working-class people the most, since they commute the farthest to work. Suppose that the group randomly surveyed 24 individuals and asked them their daily one-way commuting mileage. The results are in Table below. Using a 5% significance level, test the hypothesis that the three mean commuting mileages are the same. working-class professional (middle incomes) professional (wealthy) 17.8 16.5 8.5 26.7 17.4 6.3 49.4 22.0 4.6 9.4 7.4 12.6 65.4 9.4 11.0 47.1 2.1 28.6 19.5 6.4 15.4 51.2 13.9 9.3
A random sample of 1100 potential voters was randomly divided into 2 groups. Group 1: 500 potential voters; no registration reminders sent; 248 registered to vote Group 2: 600 potential voters; registration reminders sent; 332 registered to vote Do these data support the claim that the proportion of voters who registered was greater in the group that received reminders than in the group that did not? Use a 1% level of significance.
dults aged 18 years old and older were randomly selected for a survey on obesity. Adults are considered obese if their body mass index (BMI) is at least 30. The researchers wanted to determine if the proportion of southern women who are obese is less than the proportion of southern men who are obese. The results are shown in the table below. Test at the 1% level of significance. Number who are obese Sample size Men 42,773 155,525 Women 67,176 248,775 a.State the distribution to use for the test. (Round your answers to five decimal places. b. What is the test statistic c. Conduct a Hypothesis Test
"The financial manager of a national warehouse chain has found from previous experience that 60% of clients pay by credit card, 30% pay on account, while the remainder pay using cash. He wishes to know if this is still the case. A random sample of 1000 sales receipts from the last month produced the following results: Payment Method Credit Card Account Cash Total Number of receipts 620 260 120 1000 Using a 5% significance level, test whether the payment method pattern has changed.
A market research study hopes to determine if the average sales of house entertainment units will increase in a test market with the introduction of a new package. Sales recorded in a 32-day period for the old package and a 30-day period for the new package were as follows What can be concluded at 2.5% significance level? Use the Ten Step Process. Ho:_________________________________________________________________ Ha:_________________________________________________________________ Type of Test:_________________________________________________________
a) The plant manager of a company that makes pillows claims that only 8 percent of thepillows made have a stitching defect. The quality control director thought that thepercent might be different from 8 percent and selected a random sample of pillows totest.