Find sampling distribution of sample proportion of riders

Assignment Help Basic Statistics

Reference no: EM131430818

Travel and Transportation The Greenline Taxi Company in New York City keeps careful records of items left behind by riders. Most items are claimed, but many remain in a lost-and-found area at the company's headquarters. Records indicate that the proportion of riders who leave an item in a taxi is 0.12. Suppose a random sample of 250 riders is obtained.

a. Find the sampling distribution of the sample proportion of riders who leave an item behind. Carefully sketch the probability density function.

b. What is the probability that the sample proportion of riders who leave an item behind is more than 0.15?

c. What is the probability that the sample proportion of riders who leave an item behind is between 0.11 and 0.115?

d. Some people speculate that in bad economic times, riders (and people in general) are more careful with their belongings. Suppose this sample was obtained during a recession, and the sample proportion of riders who left an item behind was 0.09. Is there any evidence to suggest that the true proportion is less than 0.12?

Reference no: EM131430818

Questions Cloud

Summarize of tour to chicago field museum pritzker dna lab : Two pages of summarization of tour to Chicago field museum Pritzker DNA lab. Write about what you saw and what you learn.

What are the doctors concerns : What does Malik Hasan M.D., CEO of Foundation Health Systems say about making healthcare more "efficient" and what are the doctor's concerns about the new reality of insurance companies dictating what services they will or will not pay for?

Devise a plan to investigate the validity of patients claim : As the head health care administrator at USA Community Hospital, you are required to review compliance reports on issues relating to the ethical conduct of the professional staff at your hospital, patient review registries, and standard procedures..

Show the benefits to fran of specialization : The price of soybeans is $1.50 per kilogram and the price of corn is $0.60 per kilogram. Show the benefits to Fran of specialization. What should she specialize in?

Find sampling distribution of sample proportion of riders : Find the sampling distribution of the sample proportion of riders who leave an item behind. Carefully sketch the probability density function.

Excess ventilatory demand from increase : Patients with emphysema have trouble moving air mechanically. Patients become hypoxic during exercise, primarily due to the body not being able to handle the excess ventilatory demand from increase in CO 2 production."?

Why sabermetric-based player evaluation is such a shock : Examine why sabermetric-based player evaluation is such a shock to other executives in baseball. Explain how you would apply Moneyball's management lessons in your own endeavors.

Why this path would make a country poorer : Throughout history, many countries have chosen the path of autarky, choosing to not trade with other countries. Explain why this path would make a country poorer.

Why are people in the usa going to canada : Why are people in the USA going to Canada to buy prescription medicines and what can state and federal governments take to keep drug prices down? Why are state governments interested in keeping prescription prices lower?

User Account

All Pages