There is a relationship between political affiliation (on a scale of 1 to 10, where 1 = very liberal and 10 = very conservative) and U.S. geographic regions, such that people living in the Northeast are more likely to consider themselves liberal than people living in the South. what is my unit of analysis?

Suppose you were to collect data for the following pair of variables, drivers: blood alcohol level, reaction time.  You want to make a scatter plot. Which variable would you use as the explanatory variable? Blood alcohol or reaction time? Which variable would you use as the response variable? Blood alcohol or reaction time? Would you expect to see a positive or negative association? Or neither?

Complete part C. C. Compute an estimate of the population parameter.  Telephone survey of 2980 adults in certain country, 27% reported they own least one gun. Researchers want to estimate the true percentage of adults in that country that own at least one gun.

1. Fill in the blanks for each of the statements below. а. A survey of 1000 U.S. adults found that 40% think the internet is the best way to get news and information. Population: Sample: Variable of Interest: Type of Data (Qualitative or Quantitative): Is the 40% a parameter or statistic, and why? b. A survey of the 55 law firms in a local city found that the average hourly billing rate is $425. Population: Sample: Variable of Interest: Type of Data (Qualitative or Quantitative): Is the $425 a parameter or statistic, and why?.

Determine (a) the x20 test statistic, (b) the degrees of freedom, (c) the P-value, and (d) test the hypothesis at the a = 0.05 level of significance. H0 : The random variable X is binomial with n = 4, p = 0.8 H1 : The random variable X is not binomial with n = 4, p = 0.8 X 0 1 2 3 4   Observed 5 40 122 442 385   Expected 1.6 25.4 152.7 407.1 407.1

As part of the National Health Interview Survey, occupational injury data were collected on thousands of American workers. The table summarizes part of the data.   Self-employed Employed by others injured 210 4391 Not injured 33724 421502 Total 33934 425893 What’s the relative risk of being injured in self-employed workers versus workers employed by others? Choose from following options.  a. 0.2  b. 0.6  c. 0.8

A congressperson wants to come up with a single value to describe the prices of homes in their district. However, their district consists of a few homes that are extremely expensive compared to the others. Which descriptive statistic should they use? a. Range b. Mode c. Median d. Mean

Use the following information in TABLE 1 on five college professors to answer the following 5 questions. Name Specialty Sex Age Rank Able Economics M 40 Associate Professor Roth Management F 41 Full Professor Martin Marketing M 52 Associate Professor Brock Finance F 30 Assistant Professor Young Accounting F 35 Assistant Professor           1.  Based on Table 1, which is quantitative variable? (This is a multiple choice question. Select the one correct answer.) Group of answer choices Specialty Age Sex Rank       2. Based on Table 1, what scale of measurement is used for Rank? Group of answer choices Nominal Ratio Ordinal Interval

Suppose we wish to compare the health status of two groups of people. What variables might we use to measure the status? What variables might we want to control in order to draw the appropriate inferences and why?

1. Identify whether the variable in the information below is qualitative or quantitative. A nurse collects blood from kids and measure their blood-sugar content. This measure of blood-sugar concentration is a variable. a. quantitative b. qualitative c. qualitative as well as quantitative d. neither qualitative nor quantitative 2. Identify the technique for gathering data in the study below. A pharmaceutical firm wants test the effectiveness of a new drug. It wants to know if the new drug is significantly stronger than the conventional drug. This is a/an study. a. observational b. experimental c. census d. sampling 3. You want to plot a frequency graph of daily rainfall, with rainfalls (inches) on the horizontal axis. You will use a a. bar chart b. histogram c. cumulative frequency d. best fit line 4. Frequency of categorical data are displayed using a a. bar chart b. histogram c. time series graph d. best fit line