A student polls his school to see if students in the school district are for or against the new legislation regarding school uniforms. She surveys 450 students and finds that 214 are against the new legislation.
Calculate the EBP. Use a 90% Confidence Level. Fill in the blank, round to three decimal places.
In: Statistics and Probability
13. Student loan programs are available to students and parents to finance college-related expenses. Compare and contrast the programs available to students and parents. How are the interest rates determined?
14. What are payday loans? Besides the high interest rates, what are some of the dangers associated with this type of loan?
In: Finance
1. How important do you think it is for teachers to create a respectful and positive environment for their students? What effect do you think the environment plays in a child’s formation and enthusiasm for learning?
2. Write one goal for yourself in regard to creating a positive learning environment for your students.
In: Psychology
Assume that you are the Event Risk Manager for a young adult rock festival. What are some of the problems with alcohol that you might encounter?
Include the following assumptions:
In: Operations Management
Write a for-loop in MATLAB that generates a list of numbers such that each number is the sum of the previous three. Initialize your list of numbers at the values of 0, 0 and 1. In other words, "0" is the first element of the list, "0" is the second element of the list, and "1" is the third element of the list. What is the 20th value in the list?
In: Statistics and Probability
Students in EC Activities: 4 1 2 0 5 6 2 1 0 3 0 1 1 4 8 6 9 2 0 4 2 10 5 6 1
Students not in EC Activities: 5 7 0 9 4 3 12 8 4 2 0 5 5 4 9 14 6 10 9 6 3
In: Statistics and Probability
3) Suppose that a price searcher is currently charging a price that leads to an output level where marginal revenue is zero. Assume that marginal costs are always positive.
This price will or will not maximize the firm’s profit.
4) If a firm goes out of business, what happens to the firm’s assets and workers?
A) The assets and workers become available for use by other firms in potentially more productive ways.
B) The assets and talents of the workers must remain with the firm owners
C) The assets and workers become available for use by other firms, but only for less productive purposes.
D) The assets and talents of the employees are lost permanently.
5) Suppose that families with low income have a highly elastic demand for college, while families with high income may have an inelastic demand for college. Assume there is no “reselling” of a college education.
Which of the following pricing strategies would increase revenue for colleges?
A) Charge students from low-income families a lower-price, and charge students from high-income families a higher price.
B) Charge students from high-income families a lower-price, and charge students from low-income families a higher price.
C) Charge all students the same price, regardless of family income.
In: Economics
Suppose that a principal of a local high school tracks the number of minutes his students spend texting on a given school day. He finds that the distribution of minutes spent texting is roughly normal with a mean of 60 and a standard deviation of 20. Use this information to answer the following questions.
1. Based on the statistics, what is the probability of selecting at random a student who spends an extreme amount of time texting – either less than 10 minutes OR more than 110 minutes?
2. Based on the statistics, what is the probability of selecting at random (with replacement) two students who spent a below-average amount of time texting?
3. Based on the statistics, what is the probability of selecting at random (with replacement) two students who spent more than 75 minutes texting?
4. Based on the statistics, what is the percentile rank of a student who spent 100 minutes texting?
5. Based on the statistics, find the two numbers of minutes that define the middle 95% of students in the distribution. What is the value for the lower number that you found?
6. Based on the statistics, find the two numbers of minutes that define the middle 95% of students in the distribution. What is the value for the higher number that you found?
In: Statistics and Probability
Suppose that GMAT scores of all MBA students in Canada are normally distributed with a mean of 550 and a standard deviation of 120.
a. A university (that is representative of the MBA students in the U.S.) claims that the average GMAT scores of students in its MBA program are at least 550. You take a sample of 121 students in the university and find their mean GMAT score is 530. Can you still support the University’s claim? Test at 5% significance level. Interpret the test result.
b. Calculate the p-value for the test in part (a). If the hypothesis was to be tested at 10% significance level instead of 5% would your answer to part (a) change? Explain why without actually conducting the test.
c.Do you need the assumption that “GMAT scores of all MBA students in the U.S. are normally distributed” to answer part (a) or (b)? Explain.
d. You discover that the population standard deviation you’ve been using is actually the sample standard deviation. All other sample information holds. If you were still conducting the hypothesis test as you set up in part (a), would your test statistic/ distribution change? How?
And would you need the assumption of normality of the population now? Why?
In: Statistics and Probability
The reading speed of second grade students in a large city is approximately normal, with a mean of
9191
words per minute (wpm) and a standard deviation of 10 wpm. Complete parts (a) through (f).
(a) What is the probability a randomly selected student in the city will read more than
9595
words per minute?The probability is
0.34460.3446.
(Round to four decimal places as needed.)
Interpret this probability. Select the correct choice below and fill in the answer box within your choice.
A.If 100 different students were chosen from this population, we would expect
nothing
to read less than
9595
words per minute.
B.If 100 different students were chosen from this population, we would expect
nothing
to read exactly
9595
words per minute.
C.If 100 different students were chosen from this population, we would expect
3434
to read more than
9595
words per minute.Your answer is correct.(b) What is the probability that a random sample of
1111
second grade students from the city results in a mean reading rate of more than
9595
words per minute? The probability is.......
(Round to four decimal places as needed.)
In: Statistics and Probability