What is the mode? Ages of Consumers 30 -34 10 35-39 15 40-44 8 45-49 O b. 35.58 O c. 36.56 O d. 36. 58 O a. 35.56

Find the number of the class containing the largest number of exam scores (1,2,3,4,5, or 6)

(d) Identify and interpret a 95% confidence interval for the mean demand and prediction in- terval for an individual demand when x4 = .20, x3 = 6.5, adver = C.

Suppose you have a data set about whether a person received a new drug or a sugar pill and the number of hours of deep sleep. a. Which of the sources of data best describe the data set? b. Is the data set based on a sample or a population? ... a. Choose the correct answer below. O A. These data are results of an observational study. O B. These data are collected by ongoing business activities. OC. These data are outcomes of a designed experiment. O D. These data are responses from a survey. O E. These data are distributed by an organization. b. Choose the correct answer below. O A. The data was taken based on a population. O B. The data was taken based on a sample. O C. There is no way to know whether the data was taken based on a sample or a population.

Creating graphs gives you a picture of your data. In our visual-oriented world, graphing data is one way of "letting the statistics speak for themselves." The proper choice of graph depends on the nature of the variable. Most graphs are pie charts, bar graphs, histograms, frequency polygons or timelines. There are others, but in these are the graphs you will see most often in media, public opinion polls and research studies. A histogram usually has vertical bars placed on the horizontal axis (x-axis) that touch each other, although some texts no longer require that the bars touch. The y-axis shows the frequency, percetage or rate of occurrence. Figure 1. Children's television viewing time. 6. 2. 10 15 20 25 30 35 40 45 50 Viewing time (hours per week) Note: Television viewing time per week for the sample of 30 preschool children from low-income families. Frequency refers to the number of children in each category of viewing time.

7.  Please answer this question ASAP. Please circle all answers, please be organized.

What observations can you make about the population of the 50 states?

90. Seven hundred and seventy-one distance learning students at Long Beach City College responded to surveys in the 2010-11 academic year. Highlights of the summary report are listed in Table 1.39. Have computer at home 96% Unable to come to campus for classes 65% Age 41 or over 24% Would like LBCC to offer more DL courses 95% Took DL classes due to a disability 17% Live at least 16 miles from campus 13% Took DL courses to fulfill transfer requirements 71% Table 1.39 LBCC Distance Learning Survey Results a. What percent of the students surveyed do not have a computer at home? b. About how many students in the survey live at least 16 miles from campus? c. If the same survey were done at Great Basin College in Elko, Nevada, do you think the percentages would be the same? Why?

section 6.2, stats/please help with TI-84 calculator The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts​ (a) through​ (c) below.   Assume the population is normally distributed. 1426   1224   990   692  725   835   728   740   544  622  1441   949     a) find the sample mean ________________  (round to one decimal place as needed) b) find the sample standard deviation _________________ (round to one decimal place as needed)   (c) construct a 99% confidence interval for the population mean. A 99% confidence interval for the population mean is (______________ , _______________) (round to one decimal place as needed)

question.Age (Years) Less than high school High school graduate Some college College Degreegraduate15 to 17 12,723 210 132 2918 to 34 9,655 19,231 25,444 17,49735 to 49 6,412 16,642 16,756 21,12550+ 13,693 34,110 26,461 29,899Figure 1 - 2013 U.S. population, in thousands, by age and educational attainment.Source: Census, U.S. Bureau of the CensusFind the probability that in the year 2013, a U.S. resident was a High school graduate. Writethe probability as a percent rounded to the nearest tenth.2