Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

1) Mean amount purchased by customer at departmental Store is $23.50 with standard deviation of $5.00. Suppose distribution of amounts purchased follows normal distribution.  For sample of 50 customers, answer the problems given below.

a) Determine probability that sample mean is at least $25.00?

b) Determine probability that sample mean is more than $22.50 but less than $25.00?

c) In what limits would 90 percent of sample means occur?

2) Truck Lines service uses the ABC Super Duty F-750 exclusively. Management made study of the maintenance costs and found the number of miles travelled during year followed the normal distribution. Mean of the distribution was 60,000 miles and standard deviation 2,000 miles.

a) Determine the percent of ABC Super Duty F-750s logged 65,200 miles or more?

b) Determine the percent of trucks logged more than 57,060 but less than 58,280 miles?

c) Determine the percent of Fords travelled 62,000 miles or less during the year?

d) Is it logical to conclude that any of the trucks were driven more than 70,000 miles? Describe.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M910518

Have any Question? 


Related Questions in Statistics and Probability

A statisticsnbspinstructor at a large western university

A statistics instructor at a large western university would like to examine the relationship (if any) between the number of optional homework problems students do during the semester and their final course grade. She ran ...

1 an investigator wants to determine if a new program aimed

1. An investigator wants to determine if a new program aimed at reducing the overall number of pregnancies in a highly populated area is effective (reducing average births below 6 per household). In order to carry out th ...

1 distinguish between a quota sample and a purposive

1. Distinguish between a quota sample and a purposive sample. 2. What three criteria characterize good descriptions of data?

Another simple question can you give me 3 points regarding

Another simple question, can you give me 3 points regarding to origins of the Cold War.

The manager of a pizza chain in albuquerque new mexico

The manager of a pizza chain in Albuquerque, New Mexico, wants to determine the average size of their advertised 16-inch pizzas. She takes a random sample of 25 pizzas and records their mean and standard deviation as 16. ...

Assume that womens heights are normally distributed with a

Assume that women's heights are normally distributed with a mean given by mu equals 63.3 in, and a standard deviation given by sigma equals 3.1 in. Complete parts a and b. a. If 1 woman is randomly selected, find the pro ...

A box of teddy grahams chocolate cookies is supposed to

A box of Teddy Grahams chocolate cookies is supposed to weigh 250 grams. There is some variation in weight from box to box. The box contents are Normally distributed with an unknown mean and a known standard deviation of ...

Topicnbspstate party structurethreadnbspfirst review the

Topic:  State Party Structure Thread:  First, review the Reading & Study presentation "Political Structure at the State Level" as an example about the structure of the Republican Party in Virginia Select 1 of the major p ...

When conducting a hypothesis test if z calculated is less

When conducting a hypothesis test, if z calculated is less than z critical, you should accept the null hypothesis?

Let a be a matching not necessarily stable and let maom be

Let A be a matching (not necessarily stable), and let MA,Om be the set of men who prefer the women to whom they are matched under A to the women to whom they are matched under the men's courtship matching Om. (a) Prove t ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen