An insurance company checks police records (in a city) on 500 accidents selected at
random and notes that teenagers were at the wheel in 120 of them. It is desired to test
if this information indicate that more than 20% of auto accidents involve teenage drivers
in the city. State the decision about H0 and make the conclusion about Ha.
You can try a proportional one-sample z-test for this one since this problem is using proportions.
Using a formula for a proportional one-sample z-test with your data included, we have:
z = .24 - .20 -->test value (120/500 is .24) minus population value (.20) divided by
√[(.20)(.80)/500] --> .80 represents 1-.20 and 500 is sample size.
Finish the calculation. Remember if the null is not rejected, then there is no difference. If the null is rejected, then p > .20.
I hope this will help.
Which sentence supports the idea that teenagers behind the wheel of a car cause more accidents than adult drivers?
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The demands of being a teenager, going to school, getting good grades, finding one's self, and planning out the future are stressful.
For example, the U.S. Department of Transportation says that in 2004 60% of the accidents in the U.S. involved drivers younger than 18.
An 18 year old is considered an adult; however, in many states, this does not mean he or she can drink legally since that legal age is 21.
For example, if an 18-year-old had the choice, he or she would rather drive faster than slower when on the freeway.
"For example, the U.S. Department of Transportation says that in 2004 60% of the accidents in the U.S. involved drivers younger than 18." supports the idea that teenagers behind the wheel of a car cause more accidents than adult drivers.
Lorne is writing his band instructor to explain why he believes the band should offer private lessons in addition to the normal classroom instruction. Which sentence is a good reason to include in his letter to the band instructor?
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Private lessons could be offered after school and before school.
Private lessons include training in reading music, as well as playing music.
Private lessons mean added practice which will make the band play better together.
Mr. Corac teaches English, but he is trained in classical music.
"Private lessons mean added practice which will make the band play better together." is a good reason to include in Lorne's letter to the band instructor.
Felix has been assigned a research paper about school uniforms and whether or not they can help keep schools safe. He is of the opinion that school uniforms should not be required. He thinks that choosing their own clothes is important to helping students express themselves. Which of the following is the best research source for Felix to use in order to help him prove his point?
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a teenage fashion magazine
newspaper article about school safety
encyclopedia entry about clothing
directory for local high schools
A teenage fashion magazine is the best research source for Felix to use in order to help him prove his point about clothing being important for students to express themselves and thus, school uniforms should not be required.
Ariana has been assigned an argumentative essay about the use of laptops in the middle school classroom.Which resource would be best in helping her to determine her position and support her ideas?
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an educational journal discussing the rewards of technology in the classroom
an encyclopedia article about the development of the laptop
a map of the state showing the location of all the middle schools
a blog written by a middle school student sharing his day-to-day experiences
An educational journal discussing the rewards of technology in the classroom would be best to help Ariana to determine her position and support her ideas regarding the use of laptops in the middle school classroom.
Michael is writing an article about the negative effects of playing video games. Which fact would be support his argument?
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Playing video games makes young adults mentally stronger and sharper.
Playing video games can lead to a lack of concentration and productivity among young adults.
Playing video games can teach adolescents the importance of cooperation and teamwork.
Playing video games decreases stress levels among young adults.
"Playing video games can lead to a lack of concentration and productivity among young adults." would support Michael's argument about the negative effects of playing video games.
Use this letter to answer the question that follows.
Dear Mr. Frenkel,
Thank you for the scholarship. I look forward to attending the Weldon Company Theater Workshop this summer. This is a great chance to master the basics of theater. The Weldon Company is known for having first-class instructors and exceptional programs. I appreciate your support of my theatrical pursuits.
Sincerely,
Dylan Combs
Which words from this letter best contribute to its formal tone?
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"Mr." and "Sincerely"
"scholarship" and "opportunity"
"Weldon" and "great"
"basics" and "first-class"
"Mr." and "Sincerely" best contribute to the formal tone of the letter.
Old Faithful is a cone geyser in Yellowstone National Park. A geyser is a natural fountain that shoots hot water into the air. Many tourists and scientists visit Old Faithful every year. Old Faithful is known for erupting water and steam at regular intervals. For eruptions that last about two minutes, it will spurt about every hour. For eruptions that last about four minutes, it will spurt about every hour and a half. Old Faithful will spray water from about 100 to 200 feet in the air. The geyser's water and steam come from underground. Earthquakes affect how often Old Faithful will erupt. What would be the best concluding sentence for this passage?
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Hot springs are like geysers, but hot springs don't erupt water.
Steamboat Geyser can spray water about 300 feet in the air.
A group of people discovered Old Faithful in Wyoming in 1870.
Old Faithful is one of the most famous geysers in the world.
"Old Faithful is one of the most famous geysers in the world." would be the best concluding sentence for this passage as it summarizes the information and emphasizes the significance of Old Faithful.
Use this text to answer the question that follows.
School Uniforms
For much of the 20th century in the United States, school uniforms were common in private schools. These days, however, more public schools are seeing the advantages of having students dress in school uniforms. After considering the advantages that school uniforms have, many teachers, administrators, parents, and young people are siding with uniforms.
Public schools, like America itself, are supposed to be "melting pots." Children of all races, religions, backgrounds, and income levels go to school together, play together, and bond with each other. Uniforms help accomplish this. It becomes difficult to determine who is rich and who is poor, for example, based on what people wear. Even more importantly, uniforms not only help erase the differences that students may have from one another, they help reinforce what they have in common—the shared experience of being students at the same school.
Parents of students who wear uniforms often speak of the relief they enjoy from not having to worry about the huge wardrobes necessary to keep children up to date and in style. With uniforms, school becomes a true learning environment rather than a fashion show.
Students, too, report higher self-esteem and better school performance when they no longer need to spend so much time, energy, and money worrying about how they look, and how they are being judged by others based on appearance. In a time when the latest popular footwear can cost hundreds of dollars, it makes sense for schools to reduce problems such as discrimination by promoting uniforms.
Uniforms may require students to give up some of the individuality they express through fashion, but this allows students to express more of their individuality in areas like academic excellence. Ultimately uniforms help schools do the job of making students the best students they can be.
How does the author support the claim that parents are in favor of school uniforms?
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by listing the reasons why parents do not like fashion shows
by describing how parents like not having to buy large amounts of clothing as trends change
by naming the different kinds of stores where parents can buy the uniforms
by explaining how parents use lots of energy getting their children ready for school each day
The author supports the claim that parents are in favor of school uniforms by describing how parents like not having to buy large amounts of clothing as trends change.
A writer believes that technology is the cause of poor spelling. What sentence helps support this idea?
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"Another way is to read more books and to look up definitions in the dictionary."
"Some students don't understand the importance of correct spelling."
"They rely too much on computers to correct misspellings for them."
"A single misspelled word in a sentence can turn it into nonsense."
"They rely too much on computers to correct misspellings for them" helps support the idea that technology is the cause of poor spelling.
Fireflies are the best insects. They do not bite or sting people. Fireflies eat nectar from plants. They glow at night and are easy to catch. People of all ages enjoy watching fireflies light up the summer nights. Which statement from the passage best shows the author's point of view?
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"Fireflies eat nectar from plants."
"They do not bite or sting people."
"Fireflies are the best insects."
"They glow at night . . ."
"Fireflies are the best insects" is the statement from the passage that best shows the author's point of view.
Angela is presenting a speech to her class about the dangers of using portable music players. Which statement would make the best claim?
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Portable music players are unsafe because they cause hearing loss and slow people's reaction times.
The safest way to use portable music players is to get real headphones instead of using those little ear buds that hurt.
Some portable music players are safer than others and cost more, but it really depends on which one you choose to buy.
Portable music players are fun, but some of them are more difficult than others to learn how to use.
"Portable music players are unsafe because they cause hearing loss and slow people's reaction times" would make the best claim for Angela's speech about the dangers of using portable music players.
Sheldon is writing an essay about the importance of French classes in elementary and middle school. Which fact would support this idea?
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Learning French will require a lot of time and effort and may distract students from other subjects in school.
Learning a foreign language such as French is much easier at a young age and can prove helpful in the future.
Elementary and middle school should focus on helping children master English rather than a foreign language.
Finding a tutor for a foreign language such as French can be very expensive and is a difficult process.
"Learning a foreign language such as French is much easier at a young age and can prove helpful in the future." would support Sheldon's idea that French classes are important in elementary and middle school.
Use this text to answer the question that follows.
Waking Up Early
"Early to bed, early to rise, makes you healthy and wise!" We have all heard this line often enough throughout our childhood. However, only few of us really follow it.
Getting up early has many advantages. You have more time to do things. You can go for long walks, which not only exercise your body but also refresh your mind as you breathe in fresh and clean morning air. You can go for a run or a bike ride with your friends. Early morning is the best time to do gardening as well. If you go to a park, you will see a lot of people doing yoga in groups. Some people like to spend this time doing meditation because for them, it is the most peaceful part of the day before they get busy with their daily chores. Other people spend the morning reading the newspaper, listening to music, or enjoying a cup of tea or coffee.
Which would be the best concluding sentence for this passage?
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In contrast, getting up later in the day can make us feel lazy and sleepy.
To conclude, if you want to get to work on time, you should wake up early.
Many famous people also have the habit of getting up early in the morning.
Therefore, getting up early in the morning is a great way to start your day.
"Therefore, getting up early in the morning is a great way to start your day." would be the best concluding sentence for this passage as it summarizes the information and emphasizes the benefits of waking up early.
Use this text to answer the question that follows.
“Jenny, is this how I factor this out?”
Jenny leaned over Anya’s shoulder and frowned. “Not quite. Remember when you multiply two negative numbers together, you get a positive.”
“Oh yeah! Thanks, Jen!”
Jenny usually had to help her friends with their homework. The two girls were close friends. Jenny didn’t have a lot of friends, but the few ones she did have stuck to her like glue. “So when is your mom going to let you have the keys, Anya?” Jenny asked.
“Ugh, probably never. I passed my test, but my mom loves that car. She’ll never trust me with it,” Anya said, “But what about you? How are you doing behind the wheel?”
Jenny looked up from her work and stared out into the school parking lot. Other teens she knew were already driving, Anya included, but Jenny was younger than most of the kids in her grade. She still had to wait months before she could take her driving test. She sighed. “I’m doing ok. My dad makes me learn in this old clunker. It’s got a clutch and everything." Jenny rolled her eyes. "He says if I can drive a standard, I can drive anything.”
“Don’t worry, Jen, you’ll ace that test. You’ll be driving in no time,” Anya smiled.
“I hope so. Come on, here’s our bus,” Jenny threw her books into her bag and stood up.
What can you infer from these sentences? Jenny rolled her eyes. "He says if I can drive a standard, I can drive anything?"
*
Jenny's father doesn't want to spoil her with a new car.
Standard transmissions are better than automatic transmissions.
Jenny resents how her father is teaching her to drive.
Jenny's father wants her to be prepared for life's challenges
Jenny's father wants her to be prepared for life's challenges.
Use the text below to answer the TWO questions that follow.
“Mom, why don’t you take a break? You’ve been working on the computer for hours,” Alexis said.
“I just need to finish this report before the meeting tomorrow,” Mom replied.
“Yes, but you are straining your eyes and your shoulders. What would you tell me to do?” Alexis persisted.
“Okay, you’re right. I will take a short break,” Mom submitted to her daughter’s wishes.
“I am about to make myself a sandwich. I'll make you one, too. You haven't eaten all day,” Alexis stated.
“What would I do without you? You take such good care of me. I should be making a meal for you,” Mom said.
“Oh Mom, I learned how to be caring from you. I’m 12 years old. I think I can manage to make my own dinner and something for you once in a while,” Alexis responded.
“Thank you, my darling. I appreciate it,” Mom said as she hugged Alexis.
What does the reader learn about Alexis from the dialogue?
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Alexis thinks that Mom does not do enough around the house.
Alexis likes to argue with people and always has to be right.
Alexis cares about her mom a lot and enjoys helping her.
Alexis wants to make dinner for herself every night of the week.