Homework Answers
Data on 4200 college graduates show that the mean time required to graduate with a bachelor's...
Data on 4200 college graduates show that the mean time required to graduate with a bachelor's degree is 5.11 years with a standard deviation of 1.69 years. Use a single value to estimate the mean time required to graduate for all college graduates. Also, find the 95% confidence interval for the mean time required to graduate for all college graduates. What is the mean?
2. It’s conventional wisdom that grad students drink 4 cups of coffee per day. A graduate...
2. It’s conventional wisdom that grad students drink 4 cups of coffee per day. A graduate student took a sample of 25 fellow graduate students in her statistics class, and in the sample produced a mean of 3.3 cups per day and a standard deviation of 1.75. Because of this, she believes that the average is actually less than what is commonly thought (4 cups per day). Do we believe the graduate student’s claim or the conventional wisdom? Use a...
(8 points; 4, 4) A recent college graduate is interviewing for jobs. Assume the probability of...
(8 points; 4, 4) A recent college graduate is interviewing for jobs. Assume the probability of getting a job offer after an interview is 0.3. 2. What is the probability that the college graduate will have to go on 6 interviews b they get a job offer? i. What is the probability that the college graduate will have to go on 10 interviey before they get the fourth job offer? ii. i6
if your graduate school expenses require 20,000 at the end of 4 years, how much do...
if your graduate school expenses require 20,000 at the end of 4 years, how much do you need to save today? assume interest rate is 3% per year. *please show answer using financial calculator, or write out the formula**
Suppose that 71% of USC students graduate in four years, and 81% graduate in 6 years....
Suppose that 71% of USC students graduate in four years, and 81% graduate in 6 years. If you randomly select 10 first year USC students, what is the probability that all 10 will graduate in 4 years? In 6 years?
Question 2 4 pts The following information is the undergraduate and graduate enrollment of our U.C....
Question 2 4 pts The following information is the undergraduate and graduate enrollment of our U.C. campuses. We are interested in whether the graduate enrollment depends upon the undergraduate enrollment. The 2001 fact sheet is the latest on the UC web site as of 4/27/04. (Source: http://www.ucop.edu/news/profiles/Profile_2001.pdf) Campus Undergrad Enrollment Graduate Enrollment Berkeley 22.398 Davis 19,460 Irvine 14,533 L.A. 24,103 Riverside 9.281 San Diego 15.925 Santa Barbara 17,068 Santa Cruz 9.960 8,613 5,632 3,633 11,693 1,321 3,422 2.296 1,021 Does...
4. (10 points) The Graduate Record Examination (GRE) test scores x are normally distributed this year....
4. (10 points) The Graduate Record Examination (GRE) test scores x are normally distributed this year. The mean test score is 200 and the standard deviation is 10. Random test scores samples of size 30 are drawn. (a.) Calculate the mean and standard deviation of sampling distribution of sample means. Show all work. o mean = standard deviation = isiq Sabit to o lodowa (b.) Find the probability that the mean of a sample is less that 180. Show all...
lb. (Show all your work). A new drug for graduate school stress management has just been...
lb. (Show all your work). A new drug for graduate school stress management has just been discovered by the graduate Cell Biology students at CAU. The drug is named Deonine and it binds on the Janison receptor of the spinal cord. At equilibrium, 10 M of the receptor, Janison is bound to Deonine. If k off for the dissociation of Deonine from the Janison is 10 and the unbound ligand, Deonine is 10"M i. What is the dissociation constant of...
In a given university, graduate students receive a scholarship at entrance. The amount of the entrance...
In a given university, graduate students receive a scholarship at entrance. The amount of the entrance scholarship depends on the graduate program: Ph.D., $5,000; M.Sc. with thesis, $2,000; non-thesis M.Sc., $1,000. This term, a given department in that university has 10 new graduate students: 2 Ph.D., 4 M.Sc. with thesis, and 4 non-thesis M.Sc. a) What is the mean amount (per student) for the entrance graduate scholarship in that department this term? b) What is the coefficient of variation?
a random sample of 80 graduate students 1 (6 points). A random sample of 80 graduate...
a random sample of 80 graduate students
1 (6 points). A random sample of 80 graduate students shows that 22 students have shopped online in the past year. Is there enough evidence to show that the true population proportion is lower than 60%? Conduct the test at 10% level of significance. (a) H : type of test (circle one): H: two-sided / left tail / right tail (b) What is the distribution of the test statistic? (c) Sketch a graph...
(8 points; 4, 4) A recent college graduate is interviewing for jobs. Assume the probability of getting a job offer after an interview is 0.3. 2. What is the probability that the college graduate will have to go on 6 interviews b they get a job offer? i. What is the probability that the college graduate will have to go on 10 interviey before they get the fourth job offer? ii. i6
Question 2 4 pts The following information is the undergraduate and graduate enrollment of our U.C. campuses. We are interested in whether the graduate enrollment depends upon the undergraduate enrollment. The 2001 fact sheet is the latest on the UC web site as of 4/27/04. (Source: http://www.ucop.edu/news/profiles/Profile_2001.pdf) Campus Undergrad Enrollment Graduate Enrollment Berkeley 22.398 Davis 19,460 Irvine 14,533 L.A. 24,103 Riverside 9.281 San Diego 15.925 Santa Barbara 17,068 Santa Cruz 9.960 8,613 5,632 3,633 11,693 1,321 3,422 2.296 1,021 Does...
4. (10 points) The Graduate Record Examination (GRE) test scores x are normally distributed this year. The mean test score is 200 and the standard deviation is 10. Random test scores samples of size 30 are drawn. (a.) Calculate the mean and standard deviation of sampling distribution of sample means. Show all work. o mean = standard deviation = isiq Sabit to o lodowa (b.) Find the probability that the mean of a sample is less that 180. Show all...
lb. (Show all your work). A new drug for graduate school stress management has just been discovered by the graduate Cell Biology students at CAU. The drug is named Deonine and it binds on the Janison receptor of the spinal cord. At equilibrium, 10 M of the receptor, Janison is bound to Deonine. If k off for the dissociation of Deonine from the Janison is 10 and the unbound ligand, Deonine is 10"M i. What is the dissociation constant of...
a random sample of 80 graduate students
1 (6 points). A random sample of 80 graduate students shows that 22 students have shopped online in the past year. Is there enough evidence to show that the true population proportion is lower than 60%? Conduct the test at 10% level of significance. (a) H : type of test (circle one): H: two-sided / left tail / right tail (b) What is the distribution of the test statistic? (c) Sketch a graph...
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