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!
Among U.S. cities with a population of more than 250,000 the mean one-way commute to work is 24.3 minutes. The longest one-way travel time is New York City, where the mean time is 37.9 minutes. Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 6.9 minutes.
(a) What percent of the New York City commutes are for less than 29 minutes?
(b) What percent are between 29 and 35 minutes?
(c) What percent are between 29 and 42 minutes?
Explain whether the authors used a population or a sample. Explain how this could have affected the results. If a sample was used, was it representative of the entire population? Why or why not?
A female student wants to determine whether or not students at the college like the cafeteria's food. Why might the results of this survey be inaccurate?
a certain disease is found in one person in 5000. if a person does have the disease the test will show a positive
At the 0.05 level of significance, is there evidence of a difference in the mean waiting times in the four locations?
a student randomly guesses at 20 multiple choice questions. each question has four possible answers with only one being
Suppose they solicit 400 customers one day, and find that 250 of them have a Grayson's card. Assume that 60% of all Grayson's customers have a discount card, what is the probability of getting a sample proportion of at least 250 / 400=0.625?
a explain the difference between a type i and type ii error and why failing to reject a null hypothesis is not the
Preference to change blades is recorded. Do the data support the twin-blade manufacturer's claim? α=.05. This is a t-tests independent samples.
How much profit can we gain by selling shoes? Can the magazine and/or th companyy profit by advertising and selling mens shoes?
We suspect that the average fasting blood sugar level of Mexican Americans is 108. A random sample of 225 clinic patients (all Mexican American) yields a mean blood sugar level of 119 (S2 = 100). Test the hypothesis that µ. = 108. What is the ..
almost all of the acidity of soda pop comes from the phosphoric acid which is added to give them a sharper flavor. the
While some teenagers received no allowance, others reported receiving $200 per week. Based on this information, the mean allowance for U.S. teenagers is most likely.
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