...Statistics students believe the mean grade on the first exam is 65. A statistics instructor thinks the mean grade is higher than 65. He samples ten statistics students and finds their mean grade is 67 with a standard deviation of 3.1972 for the sample. Use the Traditional Method and α = 0.05 to test the instructor’s claim. The data are assumed to be from a normal distribution. ...

State the information given:

State the claim in words:

State the claim in symbols:

State opposite if the claim is not true in symbols:

State the null and alternative hypothesis:

State alpha:

State the test statistic to use:

State the calculated value of the test statistic:

State the critical value of the test statistic:

Do you reject Ho? State why or why not.

State the conclusion as an English sentence.

Classify the following descriptions as either Inferential statistics or descriptive statistics. Enter I if it is inferential statistics. Enter D if it is descriptive statistics.

The average age of the students enrolled in Statistics last semester was 29.7 years old.

There is a relationship between attending class and the grade you receive in the class.

Based on a random sample, it was concluded that the average cost of a hotel room in Chicago was greater than one in Atlanta.

A survey of 100 Statistics students found that the median score for test #1 was a 78.4%.

A study has concluded that the average credit card debt of college graduates had increased from the year 2009 to 2010.

The average Amazon.com rating of the book "The Complete Idiot's Guide to Statistics" by twenty-six reviews is 4.6 on a scale of 1 to 5.

Researchers at the University of South Alabama compared the attitudes of male college students towards their fathers with their attitudes toward their mother. Each of a sample of 13 males was asked to give a numerical grade to describe his relationship with his father and a numerical grade to describe his relationship with his mother, with 1 being the lowest and 5 being the highest. The result is reported as follows:

Assuming that the data is Normal, construct a 99% confidence
interval for the difference between male college students' attitude between their father and mother. Round your answer to 3 decimal places.

Group of answer choices

(-1.183,-0.563)

(-0.529,0.071)

(-1.336,0.736)

(-1.183,0.563)

(-1.343,0.743)

Research Proposal Title: What impact did the Covid-19 pandemic have on HBCUs housing budget?

1. How and Why it will affect the students?

2. How will Covid-19 affect the budget?

3. Will the budget be stopped, continued, or decreased? If so, how will these affect the housing?

(Focus your arguments between the budget and student housing and how is one affected by the other.)

Also, your questions need to reveal the impact on student housing or its effect on the students. Data obtained from the questionnaire must be able to show the impact on student housing which will support your arguments.

Your questionnaire should be able to answer your research question: What impact did the Covid-19 pandemic have on HBCUs housing budget?

1. Complete the following chart (round to two decimal places when calculating the expected values). Show all work in the space provided beneath it. (1 pt per row = 2 pts total)

WORK:

Suppose in a survey of n = 400 students, 255 responded that they prefer small
classes and 145 responded that they prefer large classes. Let p denote the fraction
of all students who preferred small classes at the time of the survey, and ^ p be the
fraction of survey respondents who preferred small classes. (Hint: X is distributed
as a Bernoulli random variable)

1.Use the survey result to estimate p, and calculate the standard error of your
estimator. (Hint: Notice that this is the same as estimating the sample mean)
2.What is the p-value for the test H0 : p = 0:5 vs. H1 : p 6= 0:5? Will you reject
the null at the 5% significance level?
3.Construct a 95% confidence interval for p.

Some researchers claim that herbal supplements improve human memory. To test this claim, a researcher selects a sample of n = 25 college students. Each student is given herbal supplements daily for 6 weeks and then all the participants are given a standardized memory test. For the population, scores on the tests are normally distributed with µ = 70 and σ= 20. The sample of n = 25 students had a mean score of M = 80. Can we conclude that the memory scores of the sample after the “herbal supplement” treatment are significantly greater than those of the general population(population mean before treatment)? Perform a hypothesis test using a z- score statistic. Use a one-tailed test with α = .05.

The z-score statistic is

About finding the number of permutations

Let there be n pairs of 2*n students : (1, 2) , (3, 4), (5, 6) ... (2n-1 , 2n). We want to find the number of arrangements of students which the pair are not adjacent. In other words, for (2*i) th student, the (2*i -1) th student should not be in his front or back.

For example, think of case of n=2. In this case, (1, 4, 3, 2) is not appropriate for this question because 4 and 3 are adjacent although they are pair. So we must count arrangements such as (1, 3, 2, 4)... etc for n=2

Let such total cases to be B_n. In this situation, how can we calculate the limit of (B_n)/ (2n!) ?

QUESTION:
The financial leverage multiplier is the ratio of the firm's total assets to stockholders' equity.

ANSWER OPTIONS:
True
False

Please specifically state IN THE SUBJECT LINE if the answer is TRUE or FALSE. Further, discussions should not simply be a restatement of other comments made by students who have previously posted. It is also important to know that if students include the question in their answer response, they should be aware that said text will NOT be included in the total word count. Finally, brief and limited responses such as the following WILL NOT be considered for extra credit:??

EXAMPLES OF INADEQUATE RESPONSES:  
“I think the answer is False.” OR “The correct answer is “C.”

Postings must be no less than 200 words in length to be considered. Any posting less than 200 words in length will not be accepted.