Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Question: A high-school department made a change in its curriculum. One of the instructors in the department suspected that the change would result in a lowering of math skills. Students in the old program showed a mean of 70 points on a mathematics proficiency exam. Forty-two students from the new program had the scores in the dataset MATHEMATICS TEST SCORES (attached). The standard deviation of the all students over the years has been 10.34. Use a 2% level of significance.
a. Set up a hypothesis test
i. State the null and alternative hypothesis
ii. Confidence intervals of scores and the z or t intervals.
b. What are the results of the test (do the data indicate that the new program results in a lowering of math skills).
c. Do a P test. Are the two tests consistent?
d. Should the department us the new curriculum and why?
He would like to determine whether there are more units produced on the afternoon shift than on the day shift.
Bob and John are traveling from city A to city D. Bob decides to take the upper route (through B) whereas John takes the lower route, What is the probability that John will not arrive in city D within ten hours? What is the probability that Bob will..
students who live in the dorms at a college get free t.v. service in their rooms but only receive 6 stations. on a
A 95% confidence interval is wider than a 90% confidence interval of the same parameter. In a right-tailed test, the value of the test statistic is 1.5. If we know the test statistic follows a Student's t-distribution with P(T
A stationary Markov chain has the following transition matrix. Interest is a constant 5%. Find the APV of the following contracts based on this chain, both issued when the process is in state 0.
Explain how much money do these people make each year. Suppose you read in your local newspaper that 45 officials in student services whioch is earned as an average.
MATH 221 Statistics for Decision Making iLab. Give and interpret the 95% confidence interval for the hours of sleep a student gets
Andy Lange is concerned with declining business at the bookstore. The students tell him that the prices are too high. Andy, however, has decided not to lower the prices. If the same conditions exist, what long-run market shares can Andy expect ..
X(t)is a wide sense stationary random process with average power equal to 1. Let ? denote a random variable with uniform distribution over [0, 2π] such that X(t) and ? are independent.
one out of 5000 individuals in a population carried a defective gene. a random sample of 1000 individuals is studied.
The dollar amount of damage involved in an automobile accident is an exponential random variable with mean 1000. Of this, the insurance company only pays that amount exceeding (the deductible amount of) 400.
the security council has 11 members with the usa russia china france and the uk as permanent members. if at a meeting
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd