年級

問題的種類

英文 高中

麻煩幫我看 1和2題的答案對不對❓

The Tenth Anniversary of iPhone This year, the iPhone reached its tenth anniversary after Apple introduced it to the world in 2007. Since then, the iPhone has become more and more popular. It is also one of the leading brands in the cellphonie DOHA However, around the time the iPhone came out, some people hadn't expected it to be this big. Sorne had even thought it would never come out. market now "Everyone's always asking me when Apple will come out with a cellphone. My answer is,'Probably never'." David Pogue, Sep. 27, 2006, The New York Times “There's no chance that the iPhone is going to get any significant market share.” Steve Ballmer, Apr. 30, 2007, USA Today “Phone set to struggle" Jemima Kiss, Jun. 29, 2007, The Guardian Ten years have passed, but people have not lost the interest in the iPhone. Instead, they expect more from it. This makes the above comments funny to read now. The iPhone, along with the other smartphones, has made the world a smaller place. Everything about 改艺 smartphones has become so much faster, and people's lives have improved in so many ways. This kind of 建立 年 DHE convenience has created a strong bond between people and their smartphones. Don't think so? Let's play a game then! Ask your friends not to touch their smartphones and see how long it takes before they do. Don't be surprised by how quick that is. After all, based on the information collected by a screen lock app, most people check their phones up to 110 times a day. Just when you think smartphones can't get any better, smartphone companies keep coming out with new models. Keeping people interested is important to them, so this trick never gets old. Apple just showed the world their best and most expensive model ever to celebrate their tenth anniversary. Although some people feel the new iPhone costs an arm and a leg, many of them are still interested in it. Even so, it's exciting to imagine where smartphones will take us in the next ten years. Vocabulary anniversary週年纪念日 brand 品牌 significant 有意報的;顯著的 struggle 掙扎 instead 反而 bond 聯結 Screen lock app 屏幕鎖應用程式

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數學與統計 大學

急!求救 #6 8 9 如果需要酬勞可私下談 (ex.$70題)

pie participation in informal 6.The National Science Foundation (NSF) sponsored a study on girls' science, technology, engineering, or mathematics (STEM) programs. The results of the study were published in Cascading Influences: Long-Term Impacts of Informal STEM Experiences for Girls (March 2013). The researchers sampled 174 young women who recently participated in a STEM program. They used a pie chart to describe the geographic location (urban, suburban, or rural) of the STEM programs attended. Of the 174 participants, 107 were in urban areas, 57 in suburban areas, and 10 in rural areas. a.Determine the proportion of STEM participants from urban areas. b.Determine the proportion of STEM participants from suburban areas. c.Determine the proportion of STEM participants from rural areas. d. Multiply each proportion in parts a-c by 360 to determine the pie slice size (in degrees) for each location. e.Use the results, part d, to construct a pie chart for geographic location of STEM participants. f.Interpret the pie slice for urban areas. g.Convert the pie chart into a bar graph. Which, in your opinion, is more informative? 7. All high way bridges in the US are inspected periodically for structural deficiency by the FHWA. Data from the FHWA inspections are compiled into the National Bridge Inventory (NBI). Classify each variable below as quantitative or qualitative. a. Length of maximum span (feet). b. Number of vehicle lanes. c. Toll bridge (yes or no). d. Average daily traffic. e. Condition of deck (good, fair, or poor). f. Bypass or detour length (miles). g. Route type (interstate, U.S., state, county, or city) 8. The NBI data were analyzed and the results made available at the FHWA Web site. Using the FHWA inspection ratings, each of the 608,272 highway bridges in the US was categorized as structural deficient, functionally obsolete, or safe. About 13.5% of the bridges were found to be structural deficient, while 3.5% were functionally obsolete. a. What is the variable of interest to the researchers? b. Is the variable of part a quantitative or qualitative? c. Is the data set analyzed a population or a sample? Explain. d. How did the NBI obtain the data for the study?

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