User Account

All Pages

Find standard deviation for sum of the ages of tablet users

Assignment Help Basic Statistics
Reference no: EM131643811

Question: In a recent study reported Oct.29, 2012 on the Flurry Blog, the mean age of tablet users is 35 years. Suppose the standard deviation is ten years. The sample size is 39.

a. What are the mean and standard deviation for the sum of the ages of tablet users? What is the distribution?

b. Find the probability that the sum of the ages is between 1,400 and 1,500 years.

c. Find the 90th percentile for the sum of the 39 ages.

Reference no: EM131643811

Questions Cloud

Find probability that the sum of the given values are more : An unknown distribution has a mean of 45 and a standard deviation of eight. A sample size of 50 is drawn randomly from the population.
Social aspect of the proletarian revolution : What is the economic, political and social aspect of the proletarian revolution and its driving force behind it.
Discuss the strengths of the entitys web site : Discuss the strengths of the entity's Web site. Suggest how a specific platform should be used differently, including why its use needs to change.
Define dementia and alzheimers patients struggle : Dementia and Alzheimer's patients struggle with activities of daily living. How are simple tasks like daily medication a challenge
Find standard deviation for sum of the ages of tablet users : What are the mean and standard deviation for the sum of the ages of tablet users? What is the distribution?
Discuss marxs theory of history : Discuss marx's theory of history. What is the driving force behind his idea of the coming revolution?
How to pick an igo and ngo : How to pick an IGO and NGO? IGOs have countries as members, and NGOs have people as members. The world's largest IGO is the United Nations.
Why are men more prone to having kidney stones than women : Why are men more prone to having kidney stones than women, How can an individual lower the risk of developing kidney stones
Find the given percentiles for the sum of the sample : Find the 84th and 16th percentiles for the sum of the sample. Interpret these values in context.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Evaluate project using the npv decision rule

The maximum allowable payback and discounted payback statistic for the project are 2 and 2.5 years, respectively. Use the NPV decision rule to evaluate this project; should it be accepted or rejected?

  Find correct test statistic and the critical statistic

Include the null and alternative hypothes, name the test being used, find the correct test statistic, the critical statistic, and a diagram.

  Statistical significance statements

Describe whether statements regarding statistical significance are true or false. When your results are found to be statistically significant, can one conclude that they will have a meaningful effect in the clinic.

  Smmarise the provisions and purpose of the rics

question 1 summarise the provisions and purpose of the rics valuation-professionalnbsp standards the red book and

  Find the probability that the third job with fatal errors

some jobs submitted for processing on a particular cpu have fatal programming errors while others do not. suppose that

  Poisson process with intensity

At the center of espionage in Kznatropsk one is thinking of a new method for sending Morse telegrams. Instead of using the traditional method, that is, to send letters in groups of 5 according to a Poisson process with intensity 1, one might send ..

  Two-factor analysis of variance experiment

A statistics practitioner conducted a two-factor analysis of variance experiment with a =4, b = 3, and r = 8. The sum of squares are listed here:

  Population proportion of americans-life on other planets

Calculate a 90% CI for the population proportion of Americans who believe there is intelligent life on other planets.

  Using a four-quarter centred moving average measure the

questionpart athe quarterly earnings in millions of dollars of a large textile manufacturing company have been

  Are the events d_4 and d_5 independent

Are the events D_2 and D_4 independent? Do the appropriate calculation to answer this question. Then explain why your answer makes sense.

  Deficit reduction in the sullivan statistics survey

Sullivan Statistics Survey: Deficit Reduction In the Sullivan Statistics Survey, respondents were asked, "Would you be willing to pay higher taxes if the tax revenue went directly toward deficit reduction?" Treat the respondents as a simple rando..

  How many potential winning numbers were there 666 was the

probability played a role in the rigging of the 24-april-1980 pennsylvania state lottery los angeles times 8 september

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