User Account

All Pages

Calculate the mean and standard deviation

Assignment Help Basic Statistics
Reference no: EM132372779

The market capitalizations of 20? companies, in billions of? dollars, are listed to the right. Complete parts? (a) and? (b).

97.2       116.6    163.8    170.1    41.3

31.9       171.1    37.3       194.3    91.2

87.1       47.1       103.2    136.3    3.2

7.2         284.1    323.4    18.2       390.8

a. Calculate the mean and standard deviation of the market capitalization for this population of 20 companies.

The mean is u =__________?(Round to three decimal places as? needed.)

The standard deviation is σ = _______ (Round to three decimal places as needed)

b. Interpret the parameters calculated in? (a). Assume that for market? capitalizations, a standard deviation is large as a portion of the mean if it is greater than? 25% of the mean. Choose the correct answer below.

A. The standard deviation is small as a portion of the mean. This indicates that the values are relatively concentrated.

B. The standard deviation is small as a portion of the mean. This indicates that the values are relatively spread out.

C. The standard deviation is large as a portion of the mean. This indicates that the values are relatively spread out.

D. The standard deviation is large as a portion of the mean. This indicates that the values are relatively concentrated.

Reference no: EM132372779

Questions Cloud

Find the probability of choosing exactly two second : Find the probability of choosing exactly two second shift workers and two third shift workers.
Find the probability of choosing exactly five first?-shift : Eight workers are chosen at random to be interviewed about the work environment. Find the probability of choosing exactly five first?-shift workers.
Find the probability that at least 75 patients : A doctor's office claims it keeps appointments on time 65% of the time. If 120 patients are seen one week, find the probability that at least 75 patients
What score must an applicant make to be interviewed : The results of the test are normally distributed with a mean score of 124 and a standard deviation of 16. If only the top 75% of the applicants
Calculate the mean and standard deviation : Calculate the mean and standard deviation of the market capitalization for this population of 20 companies.
What is the probability that the sum of the upward facing : What is the probability that the sum of the upward facing sides of both dice is equal to two?
Yields for a money market? account : The data table shows the yields for a money market? account, a? one-year certificate of deposit? (CD), and a? five-year CD for 13 banks.
Compute the sample covariance : The following is a set of data from a sample of n=11 items. Complete parts? (a) through left parenthesis (c).
Compute the sample covariance : The following data contains? coaches' salaries and team revenues? (in millions of? dollars) for ten college basketball teams. Use this data to complete parts?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Find the indicated probability

Assume the random variable x is normally distributed with mean µ = 83 and standard deviation s = 5. Find the indicated probability.

  Hypothesized to be exponentially distributed

The Richter magnitude of an earthquake-given that one has occurred-has been hypothesized to be exponentially distributed.† In Southern California

  Relationship between the poisson and exponential

Recalling the relationship between the Poisson and exponential distributions, find the probability that the time between two successive customer arrivals

  Follow four-step process to create a confidence interval

Of the 880 respondents, 171 admitted that at least one light had been red. Follow the four-step process to construct a 95% confidence interval.

  A sample of 64 observations is selected from a normal

a sample of 64 observations is selected from a normal population.the sample mean is 215 and the sample standard

  Why are absolute value signs used in two-tail probability

The tail probabilities given above be affected if the > signs in the inequalities were replaced by ? Explain briefly. Why are the absolute value signs used in the two-tail probability expressions above?

  Values obtained during treadmill testing

Each subject's heart rate, blood pressure, oxygen uptake, and perceived exertion during snow removal were compared with the values obtained during treadmill and arm- crank ergometer testing.

  If a company being audited fails this test what is the

an accounting firm has noticed that of the companies it audits 85 show no inventory shortages 10 show small inventory

  Confidence interval for the percentage of girls and women

Find a 95% confidence interval for the percentage of girls and women in Taiwan who had antibodies at that time.

  How many typing mistakes there are in the manuscript

A writer wants to know how many typing mistakes there are in his manuscript, so he hires a proofreader, who reads the entire manuscript and finds 15 errors.

  Find the probability that a randomly selected adult had an

assume that adults have iq scores that are normally distributed with a mean of 100 and a standard deviation of 15.find

  Describe the distributions of game durations

Select the statements below which best describe the distributions of game durations between the two types of referees. Be sure to consider shape

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd