Question

According to the Pew Internet & American Life Project, 54% of Internet users have a wireless connection to the Internet via a laptop, cell phone, game console, or other mobile device. Of these wireless users, 25% use Twitter to share updates about themselves. What is the probability that an Internet user has a wireless connection and uses Twitter?

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Other

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: There are six multiple-choice questions on an exam, each with three possible answers. (a) Determine ...

A: According to the given question, there are six multiple-choice questions on an exam, each with three...

Q: 3.It is thought that basketball teams that make too many fouls in a game tend to lose the game even ...

A: (a) The value of coefficient of determination:The given data is represented in the following table:

Q: Nationally, about 11% of the total U.S. wheat crop is destroyed each year by hail.† An insurance com...

A:  (a) Level of significance:It is given that to test whether the percentage of wheat crop lost to hai...

Q: Number 5 Please, Explain shortcut with TI84 if applicable

A: Given claim that average age of scion driver = 26Null hypothesis H0 : µ = 26Alternative hypothesis  ...

Q: Simple random sampling uses a sample of size from a population of size to obtain data that can be us...

A: The population size is denoted by ‘N’ and the sample size is denoted by ‘n’.Let the number of differ...

Q: At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to o...

A: (a) Calculation of confidence interval:The 95% confidence interval (CI) of the sample mean for a lar...

Q: Number 40 A B C

A: (a) Computation of probability that a randomly selected car will get through Wendy’s drive through i...

Q: The scores on a test are normally distributed with a mean of 150 and a standard deviation of 30. Fin...

A: The normal distribution:A continuous random variable X is said to follow normal distribution if the ...

Q: Midterm exam scores are normally distributed with a mean of 75 and a standard deviation of 6. If the...

A: According to the question , Midterm exam scores are normally distributed with a mean of 75 and a sta...

Q: Q5. You are considering two investment choices: a. 1 year CD that pays 2% for sure; b. investing in ...

A: Portfolio Mean and SDI am answering all the sub-partsQ5. You are considering two investment choices:...

Q: What is a CI and what information is required to set up a CI?

A: CI:CI represents confidence interval.

Q: In a union-management negotiation, the following are the percentages of annual wage increase gained ...

A: Let’s make a table to see this data M1M2M3U1133U2422U3314U4332U5312

Q: Consider the following multiple regression model :          y hat = -6.72 + 0.51x1 - 0.69x2 + 1.452x...

A: The given multiple regression model is as follows:

Q: Do heavier cars really use more gasoline? Suppose a car is chosen at random. Let x be the weight of ...

A: Hi, since the problem posted by you contains multiple sub-parts, we are answering the first three su...

Q: 2. Previously, you studied linear combinations of independent random variables. What happens if the ...

A: Consider the provided information:μx ≈ 7.34,      σx ≈ 6.55,      μy ≈ 13.19,      σy ≈ 18.57,      ...

Q: List and describe two of the common types of explanations for statistical relationships (other than ...

A: Common types of explanations for statistical relationships:The common types of explanations for stat...

Q: Could you help me with these questions in regaurds to the table provided? (2) Calculate covariance b...

A: Click to see the answer

Q: The flow in a river can be modeled as a log-normal distribution. From the data, it was estimated tha...

A: According to the given question, the flow in a river can be modeled as a log-normal distribution. Fr...

Q: Conduct a test at the alphaα=0.10 level of significance by determining ​(a) the null and alternative...

A: a.Hypotheses:Here p1 and p2 be the two proportions. The aim is to check whether p1>p2. The null a...

Q: yai ayu, au uiaı uie iwu aapico aI IIupcInuc J pi IaIuvII apico ocicLICu 1VIITIVILIany uiouIvulcu pu...

A: Solution:Null and alternative hypotheses:The null and alternative hypotheses to test is given below:...

Q: Assume that we have two normal distributions both with means 0 and standard deviations σ1 and σ2. If...

A: We are given two normal distributions with mean = 0 and standard deviations σ1 and σ2.

Q: The claim is that the IQ scores of statistics professors are normally​ distributed, with a mean less...

A: In this question, A researcher claims that IQ scores of Statistics professors is less than 126, for ...

Q: In a population of ages where the mean age is 45 and the standard deviation is 5.25, what are the ag...

A: Given mean age = 45Standard deviation = 5.25The Z score with 0.0505 to its left is -1.64 and the Z s...

Q: See the attached question.

A: Introduction to binomial distribution:Consider a random experiment involving n independent trials, s...

Q: Use this for 11-12: A student club consists of 10 girls and 10 guys. A committee of 8 is to be selec...

A: Combination Rule:A combination is a selection of all or part of a set of objects, without regard to ...

Q: Find the t-value such that the area in the area in the right tail is 0.10 with 25 degrees of freedom

A: It is given that the degrees of the freedom is 25, the level of significance is 0.10 and the test is...

Q: (a) In the random number table, assign the digits 0 through 8 to the event "successful surgery" and ...

A: Total number of digits assigned to event "successful surgery" (0-8) = 9Total number of digits assign...

Q: A, B, C

A: In this question we have given a data of 10 sample observation based on that data we have to find co...

Q: What happens to the variance when outliers are eliminated replaced by values closer to the mean

A: Introduction:Mean:Mean is an important measure of center when the data is quantitative. Mean of a da...

Q: What degrees of freedom would younormally expect a t test to have when N1 = 40 and N2 = 55?

A: It is provided that there are two samples of size n1=40 and n2=55.So, this is an example of 'two sam...

Q: I asked this question before, and got an answer, but I have a question about the response that was g...

A: The formula that you shared from the text book is used for time-value-of-money calculations. Such a ...

Q: A hospital reported that the normal death rate for patients with extensive burns (more than 40% of s...

A:  (a) Level of significance:It is given that to test the claim that the mortality rate has dropped, l...

Q: Workers at a large toxic cleanup project are concerned that their white blood cell counts may have b...

A: Let the random variable X be the white blood cell count per cubic millimetre of whole blood in a hea...

Q: A student takes a multiple choice test that has 11 questions. Each question has four choices. The st...

A: Identifying the distribution:It is given that the student takes a multiple choice test that has 11 q...

Q: About 42.3% of Californians and 19.6% of all Americans over age five speak a language other than Eng...

A: Solution:Let us consider that your class has 30 students.Null and alternative hypotheses:Here, to ch...

Q: Question b

A: B)The variables whose level are set by the experimenter is called as the factor of an experiment. It...

Q: the NHANES-Ill survey, the inçidence of urinary tract infections in adult women is 13,320 n per year...

A: Given incidence of urinary tract infections = 13.32%Nitride test for urinary tract infections sensit...

Q: A researcher wants to test to see if husbands are significantly older than their wives. To do this, ...

A: Paired t-test statistic:In order to test a hypothesis regarding whether the difference between a pai...

Q: When a researcher rejects a null hypothesis and he should have reject it what can of error has resea...

A: Hypothesis:Hypothesis is an assumption about the parameter of the population which will be made on t...

Q: Find the​ mean, median, and mode of the​ data, if possible. If any of these measures cannot be found...

A: The sample data of seven admission test scores for a professional school is provided.Here, n = 7.The...

Q: Use software or a calculator to find the​ range, variance, and standard deviation of the following b...

A: As data of temperature is not provided here. Here i can show you how to find the range, standard dev...

Q: Select the statistic test that best fits each description. Study examining how much of the variation...

A: Regression:Regression analysis explains whether two variables are related or not and correlation exp...

Q: Let A and B be two events with P(A) = 0.71 and P(B) = 0.44. What is the largest possible value of P(...

A: In this question, we have the value of P(A) = 0.71 and P(B) = 0.44 and we have to find the maximum v...

Q: What is the condition on the probability of success p that will guarantee the histogram of a binomia...

A: The binomial distribution has p - probability of success and n- number of trails. The binomial distr...

Q: After you determine the mean annual return, how do you find the standard deviation?

A: Click to see the answer

Q: A major university would like to improve its tarnished image following a large on-campus scandal. It...

A: Begin with tabulating data in readable format as shown below.

Q: A university dean of students wishes to estimate the average number of hours students wish to spend ...

A: The formula for the sample size is as follows:

Q: A simple random sample of 60 items from a population with o 9 resulted in a sample mean of 36. If re...

A: Confidence interval:The (1-α) % confidence interval for population mean µ is given by:

Q: Intelligence quotas on two different tests are normally distributed. Test A has a mean of 100 and a ...

A: In this question, it has been given that two different tests A and B are normally distributed, Test ...

Q: The table below shows the critical reading scores for 14 students the first two times they took a st...

A: Given the data of critical reading scores for 14 students the first two times they took a standardiz...