What should be the guaranteed delivery time

Assignment Help Basic Statistics

Reference no: EM133651077

Discussion 1: Find Z-Score given a value of random variable

In order to be able to fly freely at Statopia at night, every citizen needs to achieve a certain level of Brightness. For the past 100 years, the average Brightness is 100 and the standard deviation is 20.

1. Tamino has Brightness of 120. What is the z-score for Tamino's Brightness?
2. Papagano has Brightness of 80. What is the z-score for Papagano's Brightness?

Discussion 2: Find value for a random variable given Z-Score

3. What is the Brightness of Queen of Night if her z-score -3?

4. What is the Brightness of Sarastro if his z-score is 5?

Discussion 3: Guarantee Express Delivery

Express Courier Service has found that the delivery time for packages is normally distributed, with mean 14 hours and standard deviation 2 hours

What is the distribution for package delivery time, X?
For a package selected at random, what is the probability that it will be delivered more than 18 hours or more. ( Note in normal distribution )
Is it likely that your package take more than 18 hours to be delivered? Justify your answer.
What should be the guaranteed delivery time on all packages in order to be 95% sure that the package will be delivered before this time? Hint: Note that 5% of the packages will be delivered at a time beyond the guaranteed time period.

Reference no: EM133651077

Questions Cloud

What specific consumer need do you believe is addressed : Research some of the latest innovations impacting that industry. What specific consumer need/challenge do you believe is addressed by your chosen innovation?

Which organizational strategy is casey sensibly using : Casey was planning a presentation on Mexico. Gee, that's an awfully big topic, Alfonso observed. Which organizational strategy is Casey sensibly using?

Preliminary processing before being completed : Preliminary processing before being completed at station 2. The processing time (in minutes) for a job at station

Is there any way to ask the court to dismiss the case : Assuming your service agrees with the facts as presented by the plaintiff, is there any way to ask the court to dismiss the case in your service's favor?

What should be the guaranteed delivery time : What should be the guaranteed delivery time on all packages in order to be 95% sure that the package will be delivered before this time

How undocumented children better protected from exploitation : Should penalties be increased on companies that violate child labor laws? How can undocumented children be better protected from exploitation?

Has there been a statistically significant change : They are told by management that the mean checkout time prior to this policy was 137 seconds. Has there been a statistically significant change

Compare the obtained t-statistic for the independent-groups : Compare the obtained t-statistic for the independent-groups t-test to Contrast 2 in the one-way ANOVA. Why do they differ?

What must organization be able to provide in a collaboration : Give an example of a collaboration opportunity and its associated value. What must an organization be able to provide in a collaboration?

User Account

All Pages