A recent survey of 537 California college students found that 481 had taken an online class in the last year.  Find the sample proportion of California college students who had taken an online class in the last year.

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A: Two sample z test for proportions: Two sample z test for proportions is the hypothesis test to test…

Q: A 2010 Pew Research poll asked 1,306 Americans "From what you've read and heard, is there solid…

A: Given: A 2010 Pew Research poll asked 1,306 Americans "From what you've read and heard, is there…

Q: According to a gallup survey of boys 77% of boys had played computer games in the past week compared…

A: Let p1 be the percentage of boys had played computer games  p2 be the percentage of girls had played…

Q: Out of 300 students in the school, 225 passed an exam. What would be the mean of the sampling…

A:

Q: An entertainment company surveyed 360 elementary school children and found that 153 of them were…

A: There are 153 out of 360 (n) elementary school children found as above grade level readers. The…

Q: A Pew Research study estimates that 803 million people live in poverty today, after the 2020 global…

A: It is given that 803,000,000 people live in poverty today, out of 7,754,000,000 people worldwide.

Q: In a large data set, the 49th percentile is 523 and the 71st percentile is 675.  About what…

A:

Q: what is the average number of traffic accidents

A: Discrete series means where frequency  of a variable are given but the variable is without class…

Q: Find 25th and 40th percentile of data 2,5,7,810,12,15,17,19,24,28,32,34,36,38,40,42,44,47,49

A:

Q: Determine the 35th percentile of the scores 7,3, 12, 15,14, 47, 3, 33, 41, 12, 15, 14, 4 and 20.

A: First we have to arrange the data in ascending order as 3,3,4,7,12,12,14,14,15,15,20,33,41,47

Q: When 345 HS students were surveyed, 125 said that they completed a driver's education class prior to…

A:

Q: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 41% of the…

A: From the given information, The sample size is 100 viewers. Among 100 viewers, 36% indicated that…

Q: Among 1815 randomly selected high school students surveyed by the Centers for Diseases Control, 300…

A: Given X=300 n=1815

Q: ching basketball to football?

A: We have to use % formula to solve the problem

Q: Americans who believe the government should ensure basic health care is _________% with a margin of…

A:

Q: In a sample of 508 men who worked at home, 32% of them were college graduates. a.) Among the 508 men…

A:

Q: Akiko surveyed several friends, asking them how many siblings they had. Use this data to find the…

A:

Q: The following data represents the students' scores :…

A: Given : 81,35,86,91,69,72,47,66,80,55,90,53,43,56,80,77,59

Q: The median yearly salary for a police dispatcher in a large city was $44,528. If the 25th percentile…

A: a. The median yearly salary for a police dispatcher in a large city was $44528.

Q: A manager at e-Bay wants to determine the current percentage of U.S. adults who now use the…

A: Obtain the sample size of a preliminary estimate for p is 0.73 The formula of sample size is, Use…

Q: Explain the Representative Sample from a Population in Which the Variables Are Related?

A: The population is the area of interest for which, one want to inquire the characteristics or trend.…

Q: find 4th percentilefor given data  12,25,32,6,42,16,18,19,15,23,24,28,29,45,6,23

A:

Q: About 7% of males are colorblind. Hoping to find many colorblind men for her study, a researcher…

A: It is given that p =0.07 and n = 433.

Q: A random sample of 302 Californians found that 129 support Measure A. Build a 88% Cl for the…

A: Given that  Random sample size (n) = 302 Supported measure A = 129   Sample proportion (p) =…

Q: The Ministry of Health in the Canadian Province of Ontario conducted the Ontario Health Survey by…

A: Stratified sampling :- When we have Homogenous distinguishable sub-groups. Then the population is…

Q: A study shows that 80% of students in a school love to listen to music while studying, with a…

A: Given : A study shows that 80% of students in a school love to listen to music while studying, with…

Q: In 2015, the median family income in the United States was $66,650. (Source: U.S. Census Bureau) If…

A: Given: Median = $66,650, 90th percentile = $178,500.

Q: For the survey method to be valid, a representative sample of peoplemust be polled. T or F?

A: The survey methodology essentially involves the study of individuals (or a specified group of finite…

Q: A uSa today/CNN/Gallup survey of 369 working parents found 200 who said they spendtoo little time…

A: It is given that the number of parents said they spend too little time with their children because…

Q: If 31 out of 50 students sampled live in a college dormitory, what is the estimated proportion of…

A:

Q: If 471 households were surveyed out of which 385 households have internet fiber cable, what is the…

A: Among 471 households 385 households have internet fiber cable, therefore 471-385 = 86 households…

Q: describe why it is important for the sample in your study to be as representative as the source

A: Representative samples are important as they ensure that all relevant types of people are included…

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A: We have to test the claim that "the proportion of adults in Country C who favor building new nuclear…

Q: An entertainment company surveyed 360 elementary school children and found that 153 of them were…

A:

Q: doesn't the mean of a sample population equal the true proportion?

A: Yes, the sample population is equal to true proportion.

Q: A Pew poll taken in 2010 surveyed 830 people aged 18-29 and found that 166 of them had one or more…

A: State the hypotheses.

Q: In a sample of 20 men, the mean height was 178 cm. In a sample of 30 women, the mean height was 164…

A:

Q: State the mean and variance of the sampling distribution of the mean?

A:

Q: find 27th percentile of data   41,42,45,46,48,49,50,52,53,55,58

A:

Q: . Suppose the proportion of American adults who work at home is 40%. For a random sample of 100…

A: Solution-: Given: n=100, P=0.40 (Population proportion) Let, p^- be the sample proportion

Q: many males are in the sample?

A: A survey of 500 people is shown in a tree diagram M-male F-female E-eat breakfast D-does do not eat…

Q: If a survey of a movie shows that 50% of all people who like the movie, enjoyed the official movie…

A: Introduction: Population of interest: The population of interest includes all the individuals of…

Q: In a survey of 1150 adult males, 805 said they use the Internet. In a survey of 1050females, 746…

A: From the provided information,

Q: A Pew poll taken in 2010 surveyed 830 people aged 18-29 and found that 166 of them had one or more…

A:

Q: In a certain company, every worker was given a $900 raise. How does this affect the median of the…

A: Given information- We have given that in a certain company, every worker was given a $900 raise. We…

Q: Calculate the 70th percentile of the data set shown

A: Given n=10 x 4.4 8.8 10.3 12 20.9 26.8 28 28.4 29.2 30

Q: Explain what it means that a sample must be representative of the population.

A: It is an important part of statistics. It is widely used.

Q: In a survey of a sample of 1050 teenagers, 17% said they like to watch soccer.

A: Given that  In a survey of a sample of 1050 teenagers , 17% said that they like to watch soccer.…

Q: In a poll of 480 universities students, 220 said they were opposed to legalizing marijuana estimate…

A: We have to find correct answer..

Q: What is the relative frequency of respondents who are in favor of the bill?

A: The relative frequency is the ratio of the number of favorable outcomes to the total number of…