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數學與統計 大學

請問大一統計學這兩題有人看得懂嗎🥲

2. To study the attitude of mother and father towards their daughter participating in the outdoor games, a sample of 200 fathers and 250 mothers was investigated. In these two samples, 120 fathers and 50 mothers preferred their daughter to go for outdoor activities. Can it be concluded at a=0.01 level of significance that the proportion of father is significantly higher than that of mother in preferring their daughters for outdoor activities? 3. A firm has a generous but rather complicated policy concerning end-of-year bonuses for its lower-level managerial personnel. The policy's key factor is a subjective judgment of "contribution to corporate goals." A personnel officer took samples of 24 female and 36 male managers to see whether there was any difference in bonuses, expressed as a percentage of yearly salary. The data are listed here: Gender Bonus Percentage Female 9.2, 7.7, 11.9, 6.2, 9.0, 8.4, 6.9, 7.6, 7.4, 8.0, 9.9, 6.7, 8.4, 9.3, 9.1, 8.7, 9.2, 9.1, 8.4, 9.6, 7.7, 9.0, 9.0, 8.4 10.4, 8.9, 11.7, 12.0, 8.7, 9.4, 9.8, 9.0, 9.2, 9.7, 9.1, 8.8, 7.9, 9.9, 10.0, 10.1, 9.0, 11.4, 8.7, 9.6, 9.2, 9.7, 8.9, 9.2, 9.4, 9.7, 8.9, 9.3, 10.4, 11.9, 9.0, 12.0, 9.6, 9.2, 9.9, 9.0 (1) Is there significant evidence that the mean bonus percentage for males is larger than the mean bonus percentage for females? Use a a=0.05. (2) Estimate the difference in the mean bonus percentages for males and females using a 95% confidence interval. Male

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英文 國中

第三題為甚麼不能選C

財富 (3~5 難易度易中難y rol toda hima viste Cow Wealth 去 21 10 Do you want to make more money for a better life? Join Cow Wealth. Be part of us, and invest your money wisely with our help. Who are we? A company in South Africa. TOTO exa lamaras ABCD B and berlibt) What is the best title for the reading? (A) Cows and Calves in South Africa (C) The Cow Wealth Company 公司 invest company pregnant give birth calf 小牛 insurance 保險 How does it work? got proment With $1,000, you can get a pregnant cow of your own. It usually takes nine months before a pregnant cow gives birth. You do not have to do anything about taking cow and its calves. We will do everything for you. To own a cow, you have to pay $23 for the cow's food each month and $4 a month for its insurance. Most calves are around 240kgs when they are seven months old, and they are ready for sale for $400 each. At that time, you may decide on whether to keep raising them ShigisH or sell them for beef. womon What else? If your cow is too old to have babies, you may get a new one for free. ( 6. What can you get from owning a cow? howsauror gnio (3) You can name your cow and watch it eating grass, growing and giving birth on your cellphone. We will let you know how your cow and its calves are once a month. When our farm makes money, we will share part of the money with you. care of your The Robo title 標題 (B) Cows Mean Money (D) The Prices of Calves and Beef

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英文 高中

求解

三填(10題,每題2 分,共 20 分,答錯無倒扣) 21 for these, though. Why are we so different? Some people hate the feeling of being afraid and avoid situations like visiting ghost houses, watching scary movies, and telling ghost stories around the campfire. Others have a Researchers have found the answer lies in how the chemicals in our brain work. When we are afraid, our bodies can make fight-or-flight response, a reaction that helps us to decide whether to fight or escape. In these situations, our brains combination of hormones. Interestingly, the way our bodies respond to these_20determines whether we get to the movie theater to see a horror film or not. 22 a a have Psychologists say that people who 24 themselves in scary situations need to make sure that they are in a safe environment. For example, people who visit ghost houses have the _25 that they are going to be scared. They may 26 fear when Godzilla or Count Dracula starts chasing them. However, they know the _27aren't real, so they can enjoy the high feeling associated with the fight-or-flight response. Some people also feel a sense of confidence after they live through a 28 situation, even if they know it is false. How about you? When a scary 29__ turns up, will you escape or enjoy the fear? No matter which one you choose, there is no doubt that no one wants to face the $30. (A) horrible (C) release in real life. It's natural that everyone will escape from real danger. (D) tragedy (B) place (AC) expectation (AD) monsters (E) passion (BC) creature (AB) sudden (AE) chemicals

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