Please answer all number 1, 2, 5, and 6. Thank you!
STEM experiences forgirls. Over the past several decades, the National Science Foundation (NSF) has promoted girls participation in infonnal sci ence, technology, engi neering or mathematics {STEM} programs. What has been the impact of these informal STEM experiences? This was the question of interest in the published study, Cascading Inuences: longTerm imports ofn'o mini STEM Emeri ences for Girls (March, 2013). A sample of 159 young women who recently participated in a STEM program were recruited to complete an on-linc survey. Of these, only 27% felt that participation in the STEM program in- creased their interest in science. 5. Identify the population of interest to the researchers. b. Identify the sample. c. Use the information in the smdy to make an inference about the relevant population. Ground motion of earthquakes. In the Joni-not of Earth- quake Engineering (Nov. EM), 3. team of civil and environmental engineers studied the ground motion char; acteristics of 15 earthquakes that occurred around the world. Three (of many} variables measured on each earth quake were the type of ground motion (short, long, or for- ward directive), earthquake magnitude (Richter scale) and peak ground acceleration [feet per second}. (line of the goals of the study was to estimate the inelastic spectra of any ground motion cycle. a. identifyr the experimental units for this study. In. Do the data for the 15 earthquakes represent a populas tion or a sample? Explain. 5- Reliability of a computer system. The reliability of a com- puter system is measured in terms of the lifelength of a specied hardware component {e.g., die hard disk drive}. To estimate the reliability of a particular system, 100 com puter components are tested until they fail. and their life- lengths are recorded. a. TWhat is the population of interest? b. What is the sample? C. Are the data quantitative or qualitative"! d. How could the smnple information be used to estimate the reliability of the computer system? . intellectual development of engineering students. Perry's model of intellectual development was applied to under graduate engineering studean at Penn State (Journal of Engineering Education, Jan. 2005). Perry scores [ranging from t to 5} were determined for 21 students in a rst year. project-based design course. (Note: A Perry score of 1 indicates the lowest level of intellectual development, and a Ferry score of 5 indicates The highest level.) The av erage Perry score for the 2| students was 3.27. 3. Identify the experimental units for this study. b. What is the population of interest\"? The sample\"? c. What type of data, quantitative or qualitative, are collected? d. Use the sample information to make an inference about the population
