Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Since vending machine use mass and size to differentiate between authentic and counterfeit coins, it is significant that coins be minted to close tolerances and that coins in circulation don't suffer significant changes in mass or size.

A thrifty chemistry instructor who is not reluctant to pick up a penny found on the street weighs 8 coins presumed to be pennies and recorded the given masses in gram: 2.5139, 3.1119, 2.5236, 2.4935, 2.5184, 2.4873, 2.5357 and 2.4948.

1) Before you proceed with the given calculations, examine the dataset. Should any data be rejected? Illustrate.

2) Estimate the average mass of a penny in circulation.

3) A parameter, in this case the average mass, is useless without an estimate of its uncertainty. Though we are only dealing with cents, it still makes sense to compute the given quantities: the standard deviation (standard deviation of a single measurement), the 95% confidence interval of a single measurement, the standard deviation of the mean and the 95% confidence interval of the mean. Report the mean with its 95% confidence interval to the correct number of significant digits.

4) Two coins are weighed. Coin A weighs 2.5307 g and coin B, 2.4210 g. Could either coin be a penny? Illustrate.

5) Assume that pennies were used as weights for balances. What would be the precision of the measurement of mass in this case?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M93214

Have any Question? 


Related Questions in Statistics and Probability

Question please show your work by making a table fornbspd

Question: (Please show your work by making a table for  d and d-square) A motivational program was designed to increase the number of hours each student who took it studied per week. Eight randomly selected students were ...

1 does the average iq for residents of a state vary with

1. Does the average IQ for residents of a state vary with the amount that the state spends on education? Seven of the 50 U.S. states were randomly selected. The amount that each spent per student (in thousands of dollars ...

Assume the sweatshirt test scores are normally distributed

Assume the sweatshirt test scores are normally distributed with a mean of 500 and a standard deviation of 100. (a) Consider all random samples of 100 test scores. What is the standard deviation of the sample means? (b) W ...

Suppose that a certain college class contains 49 students

Suppose that a certain college class contains 49 students. Of these, 24 are seniors, 26 are English majors, and 9 are neither. A student is selected at random from the class. (a) What is the  probability  that the studen ...

125 wordshow did the theodore d weld william lloyd garrison

125 words How did the Theodore D. Weld, William Lloyd Garrison, Arthur and Lewis Tappan, and Elizur Wright, Jr assist in the freeing of or ending of slaves/slavery?

The following tables depict the preferences of three

The following tables depict the preferences of three universities regarding a set of applicants, and the preferences of the applicants regarding the universities. Every university also has a specified quota for the numbe ...

A study found that consumers spend an average of 24 per

A study found that consumers spend an average of $24 per week in cash without being aware of where it goes. Assume that the amount of cash spent without being aware of where it goes is normally distributed and that the s ...

Please show the work to make it understandablea large

Please show the work to make it understandable A large company is interested in knowing whether there is any relationship between a person's age and that person's opinion about a new wage incentive plan. A random sample ...

Tell which measures are resistant to outliers and which are

Tell which measures are resistant to outliers and which are NOT resistant to outliers from the following list, and explain WHY or WHY NOT for each measure: Mean, median, Quartiles, correlation, and standard deviation.

Listed below is a list of how long it takes for bands on

Listed below is a list of how long it takes for bands on stage to complete their first song (in seconds). 538 312 327 309 344 313 318 315 325 331 312 314 What is the mean time it takes for bands on stage to complete thei ...

  • 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