Determining percentage of take-out pizzas

Reference no: EM1320628

Q1) 4 machines manufacture cylindrical steel pins. Pins are subject to diameter specification. A pin may meet specification, or it may be too thin or too thick. Pins are arbitrarily sampled from each machine, and number of pins in each category is counted. Following table presents results. Is proportion of pins which are too thin, OK, or too thick is same for all machines?

	Too Thin	OK	Too Thick
Machine 1	10	102	8
Machine 2	34	161	5
Machine 3	12	79	9
Machine 4	10	60	10

Pizza

Leo has pizza business. Times to create and deliver pizzas are approximately normally distributed with mean m =20 minutes and standard deviation s = 10 minutes.

Assume that Leo advertises "If it takes more than 30 minutes to get your pizza, you get it free". What percentage of his take-out pizzas will have to give away free?

How long a time must Leo allow if he wishes to give away no more than 5% of pizzas?

Reference no: EM1320628

Questions Cloud

Correct and wrong identification : The trail was repeated 54 times with 22 correct identifications and 32 wrong identification.

Public debt is included as a part of government purchases : Interest on the public debt is included as a part of government purchases in the determining GDP may arise since.

Selecting a life-cycle model for project : She wishes your organization to build a product which will monitor the company’s stock, starting with purchasing of leather and keeping track of boots as they are manufactured, distributed to individual stores, and sold to customers.

Find the probability that a senior citizen : Find the probability that a senior citizen takes either blood pressure-lowering or cholesterol-lowering medication

Determining percentage of take-out pizzas : Assume that Leo advertises "If it takes more than 30 minutes to get your pizza, you get it free". What percentage of his take-out pizzas will have to give away free?

Change as income increases in this problem : Elucidate how do the ratios Px*X/I also Py*Y/I change as income increases in this problem.

Cross-validation and percentage split : Comparing the accuracies received utilizing the three "test options": "Utilize the training set", "cross-validation" and "percentage split".

Bureau of labor statisticstate employment : Visit the Bureau of Labor Statistics for state employment also unemployment.

Test for single population mean : The sample data are summarized by the statistics n = 27, x = 4.6 years, s- 1.9 years.

User Account

All Pages