Need help on this questions having trouble

9 answers
Question:

Need help on this questions having trouble

[tex]Need help on this questions having trouble[/tex]


Answers

Explanation:

e. State the conclusion of the test in context f. Find a 95% confidence interval for the proportion of questions on all AP exams having B as the correct choice using the normal distribution and the formula for standard error. Show your calculations

im a wee bit confused at the moment

Explanation:

Option B is not the most common correct choice.

Step-by-step explanation:

The multiple-choice questions on Advanced Placement exams have five options: A, B, C, D, and E.

The probability that any of these five option is the correct answer is:

[tex]p=\frac{1}{5}=0.20[/tex]

A random sample of 400 multiple-choice questions on Advanced Placement exam are selected.

The results showed that 90 of the 400 questions having B as the answer.

To test the hypothesis that option B is more likely the correct answer for most question, the hypothesis can be defined as:

H₀: All the options are equally probable, i.e. p = 0.20.

Hₐ: Option B is more likely the correct option, i.e. p > 0.20.

Compute the sample proportion as follows:

[tex]\hat p=\frac{90}{400}=0.225[/tex]

The test statistic is:

[tex]z=\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n}}}=\frac{0.225-0.20}{\sqrt{\frac{0.20(1-0.20)}{400}}}= 1.25[/tex]

The test statistic is 1.25.

Decision rule:

If the p-value of the test is less than the significance level then the null hypothesis will be rejected and vice-versa.

Compute the p-value as follows:

[tex]p-value=P(Z1.25)\\=1-P(Z[/tex]

*Use a z-table.

The p-value is 0.1057.

The p-value of the test is quite large. Thus, the null hypothesis was failed to rejected.

Hence, it can be concluded that option B is not  the most common correct choice.

Step-by-step explanation:

Find attached the solution

The third and fourth sections of the SAT will always be math sections. The first math subsection (labeled "3") does not allow you to use a calculator, while the second math subsection (labeled as "4") does allow the use of a calculator. Don't worry too much about the no-calculator section, though: if you're not allowed to use a calculator on a question, it means you don't need a calculator to answer it.

Each math subsection is arranged in order of ascending difficulty (where the longer it takes to solve a problem and the fewer people who answer it correctly, the more difficult it is). On each subsection, question 1 will be "easy" and question 15 will be considered "difficult." However, the ascending difficulty resets from easy to hard on the grid-ins.

Hence, multiple choice questions are arranged in increasing difficulty (questions 1 and 2 will be the easiest, questions 14 and 15 will be the hardest), but the difficulty level resets for the grid-in section (meaning questions 16 and 17 will again be "easy" and questions 19 and 20 will be very difficult).

With very few exceptions, then, the most difficult SAT math problems will be clustered at the end of the multiple choice segments or the second half of the grid-in questions. In addition to their placement on the test, though, these questions also share a few other commonalities. In a minute, we'll look at example questions and how to solve them, then analyze them to figure out what these types of questions have in common.

But First: Should You Be Focusing on the Hardest Math Questions Right Now?

If you're just getting started in your study prep (or if you've simply skipped this first, crucial step), definitely stop and take a full practice test to gauge your current scoring level. Check out our guide to all the free SAT practice tests available online and then sit down to take a test all at once.

The absolute best way to assess your current level is to simply take the SAT practice test as if it were real, keeping strict timing and working straight through with only the allowed breaks (we know—probably not your favorite way to spend a Saturday). Once you've got a good idea of your current level and percentile ranking, you can set milestones and goals for your ultimate SAT Math score.

If you're currently scoring in the 200-400 or the 400-600 range on SAT Math, your best bet is first to check out our guide to improving your math score to be consistently at or over a 600 before you start in trying to tackle the most difficult math problems on the test.

If, however, you're already scoring above a 600 on the Math section and want to test your mettle for the real SAT, then definitely proceed to the rest of this guide. If you're aiming for perfect (or close to), then you'll need to know what the most difficult SAT math questions look like and how to solve them. And luckily, that's exactly what we'll do.

WARNING: Since there are a limited number of official SAT practice tests, you may want to wait to read this article until you've attempted all or most of the first four official practice tests (since most of the questions below were taken from those tests). If you're worried about spoiling those tests, stop reading this guide now; come back and read it when you've completed them.

body_level_up-1

Now let's get to our list of questions (whoo)!

Image: Niytx/DeviantArt

The 15 Hardest SAT Math Questions

Now that you're sure you should be attempting these questions, let's dive right in! We've curated 15 of the most difficult SAT Math questions for you to try below, along with walkthroughs of how to get the answer (if you're stumped).

No Calculator SAT Math Questions

Question 1

C=

5

9

(F−32)

The equation above shows how temperature F, measured in degrees Fahrenheit, relates to a temperature C, measured in degrees Celsius. Based on the equation, which of the following must be true?

A temperature increase of 1 degree Fahrenheit is equivalent to a temperature increase of

5

9

degree Celsius.

A temperature increase of 1 degree Celsius is equivalent to a temperature increase of 1.8 degrees Fahrenheit.

A temperature increase of

5

9

degree Fahrenheit is equivalent to a temperature increase of 1 degree Celsius.

A) I only

B) II only

C) III only

D) I and II only

ANSWER EXPLANATION: Think of the equation as an equation for a line

y=m

Step-by-step explanation:

The third and fourth sections of the SAT will always be math sections. The first math subsection (labeled "3") does not allow you to use a calculator, while the second math subsection (labeled as "4") does allow the use of a calculator. Don't worry too much about the no-calculator section, though: if you're not allowed to use a calculator on a question, it means you don't need a calculator to answer it.

=29 is the correct answer

E is the answer to the question

x = 12

y = 15

step-by-step explanation:

square root

step-by-step explanation:

Similar Solved Works

5 answers

The 1842 treaty of nanking ended the war between china and a. russia b. britain c. japan d. korea

The 1842 treaty of nanking ended the war between china and a. russia b. britain c. japan d. korea...
6 answers

Based on the image and the information provided, what is likely true about ancient Greeks?A. Ancient Greeks would often go

Based on the image and the information provided, what is likely true about ancient Greeks? A. Ancient Greeks would often go to war without wearing a helmet. B. Ancient Greeks...
4 answers

What are the measures of fertility? Explain with formula​

What are the measures of fertility? Explain with formula​...
3 answers

W. J. Howey Company and Howey-in-the-Hills Service Inc. are Florida corporations under common control

W. J. Howey Company and Howey-in-the-Hills Service Inc. are Florida corporations under common control and management. Howey Company offers to sell to the public its orange grove, tree by tree. Howey-in-the-Hills Service offers these buyers a contract wherein the appropriate care, harvesting, and mar...
3 answers

In this excerpt from the poem thanatopsis by william cullen bryant what is the meaning of swain

In this excerpt from the poem thanatopsis by william cullen bryant what is the meaning of swain...
3 answers

Standing on one bank of a river, an explorer measures the angle to the top of a tree on the opposite bank to be 27 degrees. He backs up

Standing on one bank of a river, an explorer measures the angle to the top of a tree on the opposite bank to be 27 degrees. He backs up 50 feet and measures the angle to the top of the tree to now be 22 degrees. How wide is the river? Round to the nearest tenth of a foot. 187.3 feet 18.7 feet 20.2 ...
12 answers

Which best describes an ancient greek tragedy?

Which best describes an ancient greek tragedy?...
3 answers

Tests that have vague shapes or pictures of people in activities are called?

Tests that have vague shapes or pictures of people in activities are called?...
3 answers

A table titled Number of Dogs Adopted has entries 3, 3, 4, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9. The total is

A table titled Number of Dogs Adopted has entries 3, 3, 4, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9. The total is 132. A shelter kept track of the number of dogs adopted each day for three weeks. Use the table to find the statistical measures. Mean: Median: Mode: Range:...
3 answers

Find the area of the rectangle with the base 16mmand the perimeter 54mm

Find the area of the rectangle with the base 16mmand the perimeter 54mm...
3 answers

Individuals who are prone to react to stress with report more daily hassles than are those who do not

Individuals who are prone to react to stress with report more daily hassles than are those who do not react in this manner....
7 answers

Write an algebraic representation of a dilation that has a scale factor of 0.45.

Write an algebraic representation of a dilation that has a scale factor of 0.45....
4 answers

–3(c + 14) + 3 = 15 solve for c

–3(c + 14) + 3 = 15 solve for c...
4 answers

What was the most successful component of John Adams presidency? Why was this so important to the new

What was the most successful component of John Adams presidency? Why was this so important to the new nation?...
4 answers

There are 1,043 souvenir paperweights that need to be packed in boxes. each box will hold 12 paperweights. how many boxes

There are 1,043 souvenir paperweights that need to be packed in boxes. each box will hold 12 paperweights. how many boxes will be needed...
4 answers

Urgent: fifteen points what is 3452380952/1 fully reduced?

Urgent: fifteen points what is 3452380952/1 fully reduced?...
3 answers

Juan pesa 125 lb en la Tierra. Su peso en Kilogramos será . En la luna su peso es 1/6 parte de él

Juan pesa 125 lb en la Tierra. Su peso en Kilogramos será . En la luna su peso es 1/6 parte de él que posee en  la Tierra debido a la gravedad.  ¿Cuál será su peso en libras  y en kilogramos en la luna? 1 kg = 2.2 libras Juan weighs 125 lb on Earth. Your weight in Kilograms will be . On t...
3 answers

We have focused on the case of trade involving only two countries. Suppose that there are many countries

We have focused on the case of trade involving only two countries. Suppose that there are many countries capable of producing two goods, and that each country has only one factor of production, labor. What could we say about the pattern of production and trade in this case? (Hint: Try constructing t...
5 answers

Please help hurryyy, Thank youuu

Please help hurryyy, Thank youuu [tex]Please help hurryyy, Thank youuu[/tex]...
5 answers

Some things that you need to improve on this spring and summer to make you a better student two paragraphs

Some things that you need to improve on this spring and summer to make you a better student two paragraphs...

-- 0.016804--