Adelaide wants to buy a new generator. The generator costs

Describe World Population in Billions what is misleading in the visual display of data below 1 2 3 4 5 6 1004 1927 1960 1974 1987 1999 7 2012 2026 2043 Choose the correct answer below A The bars on the vertical axis curve around the globe instead of being on a straight line B Part of the time frame on the horizontal axis of the graph has been cut off C Time intervals on the horizontal axis do not represent equal amounts of time D The title does not explain what is being displayed S SC

The correlation coefficient of a set of data is 0 91 Select all of the statements that are true The positive correlation coefficient tells us that there is an outlier The two variables involved have a very strong positive correlation The correlation coefficient implies that as the independent variable increases the dependent variable increases Because the correlation coefficient is positive there is no causation The correlation coefficient implies causation

The figure to the right shows the results of a survey in which 1019 adults from Country A 1004 adults from National Identity and Birthplace Country B 1013 adults from Country C 1024 adults from Country D and 1019 adults from Country E were asked whether national identity is strongly tied to birthplace People from different countries who believe national identity is strongly tied to birthplace Country A Country B Country C Country D Country E 35 20 28 50 13 Construct a 95 confidence interval for the population proportion of adults who say national identity is strongly tied to birthplace for each country listed The 95 confidence interval for the proportion of adults from Country A who say national identity is strongly tied to birthplace is Round to three decimal places as needed

Use the Empirical Rule The mean speed of a sample of vehicles along a stretch of highway is 69 miles per hour with a standard deviation of 5 miles per hour Estimate the percent of vehicles whose speeds are between 5 per hour and 84 miles per hour Assume the data set has a bell shaped distribution Approximately of vehicles travel between 54 miles per hour and 84 miles per hour

The results of a certain medical test are normally distributed with a mean of 125 and a standard deviation of 15 A score above 137 is considered unhealthy Use the given table to find the percentage of people with readings below 134 z score Percentile z score Percentile z score Percentile 0 1 53 98 1 1 86 43 2 1 98 21 0 2 57 93 1 2 88 49 2 2 98 61 0 3 61 79 1 3 90 32 2 3 98 93 0 4 65 54 1 4 91 92 2 4 99 18 The percentage of people with readings below 134 is 0 5 69 15 1 5 93 32 2 5 99 38 0 6 72 57 1 6 94 52 2 6 99 53 0 7 75 80 1 7 95 54 2 7 99 65 0 8 78 81 1 8 96 41 2 8 99 74 0 9 81 59 1 9 97 13 2 9 99 81 1 0 84 13 2 0 97 72 3 0 99 87 3 5 99 98 4 0 99 997

Google it According to a report of the Nielsen Company 86 of internet searches used the Google search engine A sample of 100 searches is studied Use the Cumulative Normal Distribution Table or technology Round your answer to four decimal places Part 0 3 Part 1 of 3 a Approximate the probability that more than 82 of the searches used Google The probability that more than 82 of the searches used Google was approximately

Doctors are testing a new antidepressant A group of patients all with similar characteristics take part in the study Some of the patients receive the new drug while others receive the traditional drug During the study a number of patients complain about insomnia The data are shown in the contingency table below What is the relative risk of insomnia for those who receive the new drug Round to two decimal places New drug Insomnia Total 52 Traditional drug 36 88 No insomnia Total 226 295 521 278 331 609

Use the table to find the value that is three standard deviations above and below the mean Enter exact numbers as integers fractions or decimal Baseball Player Fredo Batting Average Team Batting Average 0 158 0 186 Karl 0 177 0 199 a above the mean Fredo s Team Karl s Team b below the mean Fredo s Team Karl s Team Team Standard Deviation 0 012 0 015

1 A histogram of the distribution of salaries of non administrative personnel of a company is given in the figure below 0 28 0 26 0 24 0 22 0 2 0 18 Relative 0 16 Frequency 0 14 0 12 0 1 0 08 0 06 0 04 0 02 0 0 20 21 22 23 24 25 26 27 28 29 30 Salary in Thousands of Dollars a What percent of the salaries are between 23 500 and 24 500 3 of overall salary b What percent of salaries exceed 26 500 15 c Assuming the histograms is based on 400 people construct the frequency distribution tha corresponds to this histogram

An education researcher claims that at most 4 of working college students are employed as teachers or teaching assistants In a random sample of 500 working college students 6 are employed as teachers or teaching assistants At a 0 10 is there enough evidence to reject the researcher s claim Complete parts a through e below a Identify the claim and state Ho and Ha Identify the claim in this scenario Select the correct choice below and fill in the answer box to complete your choice Type an integer or a decimal Do not round OA of working college students are employed as teachers or teaching assistants of working college students are employed as teachers or teaching assistants OB More than OC At most of working college students are employed as teachers or teaching assistants OD The percentage of working college students who are employed as teachers or teaching assistants is not stion Help