hompop 1 f 응 1, 220 29.8% 1,563 38.2% 716 17.5% 4 590 14.4% Total 4,089 99.9% 23 c.f 1,220 2,783 3,499 4,089 C.응 29.8% 68.0% 85.5%/ 99.9%

A researcher randomly purchases several different kits of a popular building toy. The following table shows the number of pieces in each kit in the sample. Find the mean of the data. Round your answer to the nearest hundredth, if necessary. Building Toy Pieces 152 37 257 342 342 37 96 288 257 101 162 200 Copy Data

A student was interested in the cigarette-smoking habits of college students and collected data from an unbiased random sample of students. The data are summarized in the following table. Males who smoke Males who do not smoke Females who smoke Females who do not smoke What type of chart best represents the relative class frequencies? Multiple Choice Pie chart Box plot Frequency polygon 10 40 15 60 Scatterplot

Under each Histogram, write a comment about the shape of the distribution (for example, Symmetric, Skewed (left/right), Uniform or Irregular) Students Frequency Frequency of Students 9 1 0 9 8 1 0 2.0 2.40 1 2 Histogram of Students College GPA 9 2.4 6 4 2.56 Histogram of Students Predicted GPA 9 4 2.8 College GPA 3 2 2.72 Predicted GPA 3.2 3 2.88 3 3 2 3.6 3.04

Find the​ (a) mean,​ (b) median,​ (c) mode, and​ (d) midrange for the data and then​ (e) answer the given question.   Listed below are the weights in pounds of 11 players randomly selected from the roster of a championship sports team. Are the results likely to be representative of all players in that​ sport's league?   234     257     226     278     237     265     290     247     257     307     265          a. Find the mean.   The mean is enter your response here ​pound(s). ​(Type an integer or a decimal rounded to one decimal place as​ needed.)

For the sample scores in the frequency distribution table below, the median is 1 4 4. 1 1 1 3.

Explain the meaning of the specified term. Sample data

What is the best way to graphically present the shape of the distribution of numeric variable?   a. histogram   b. scatter plot   c. line graph   d. pie chart

Cloud seeding, a process in which chemicals such as silver iodide and frozen carbon dioxide are introduced by aircraft into clouds to promote rainfall was widely used in many years. Recent research has questioned its effectiveness. An experiment as performed by randomly assigning 52 clouds to be seeded or not. The amount of rain generated was then measured in acre-feet. The box plot of the data for the seeded and unseeded clouds are shown in the figure. Which statement best interprets the box plot. Boxplot of Seeded, Unseeded 3000 f 2500어 2000 - 1500 - 1000 - 500- Seeded Unseeded a. Cloud seeding is somewhat effective in promoting rainfall because of the greater mean b. Outliers for both seeded and unseeded data may prove data on the effectiveness of cloud seeding is insufficient c. Extreme outliers are evident in the seeded data and has greater variance O d. There's a greater mean and greater dispersion in the seeded data. Both plots show outliers Data

A County Board of Supervisors has appointed an urban planning committee to evaluate proposed community development projects. The committee is analyzing, among other things, data on household incomes in two cities within the county. They have collected data on the income of 77 households in each of the two cities. The histograms below show the distributions of the two sets of incomes (in thousands of dollars). Each histogram shows household income on the horizontal axis and number of households on the vertical axis. The means and standard deviations for the data sets are also given. City A City B 25+ 20+ 15+ 10+ 5- ← 10 20 30 40 50 60 70 80 90 100 City A mean: 73.96 thousand dollars City A standard deviation: 20.30 thousand dollars Explanation 25- 20- 15- 104 5+ 10 (a) Identify the data set for which it is appropriate to use the Empirical Rule. It is appropriate to use the Empirical Rule for the (Choose one) ▼ data set. 20 30 The committee wants to use the Empirical Rule to make some…