​Claim: A majority of adults would erase all of their personal information online if they could. A software firm survey of 656 randomly selected adults showed that 58​% of them would erase all of their personal information online if they could. Complete parts​ (a) and​ (b) below.

Q: The median salary of the 1,073 teachers in a large public school district is $38,850. If the 65th…

A: The median salary of the 1,073 teachers in a large public school district is $38,850. If the 65th…

Q: a. The proportion of Pennsylvanians with a high school diploma is equal to 0.83. b. The proportion…

A:

Q: A survey of 62 men found that 12 have a social media account. Another survey of 57 women found that…

A: Men are taken as group 1. Women are taken as group 2.   Given: n1=62x1=12n2=57x2=40α=0.07

Q: In fall 2014, 34% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: Let A be the event that student had Math SAT of 700 or more Therefore, PA=0.36 find The probability…

Q: 3. The front row of a movie theatre has 23 seats. If you were asked to sit in the seat that occupied…

A:

Q: survey was given to 9090 high school students. They were asked if they preferred fiction or…

A: Given query is to find the percent of students in the survey,  prefer outdoor activities given they…

Q: Consider that a data set of 10 data points has a mean of 5. If every data point was doubled in the…

A: Given that No.of data points in a data set=10 Mean of 10 data points=5 Every data point was doubled…

Q: The median salary of the 1,073 teachers in a large public school district is $38,850. If the 65th…

A: Consider the given information in the problem, total number of teachers=1073 65th percentile=65% of…

Q: A librarian surveyed students checking out library books.  He asked each student how many books…

A: Solution Given the data shows the number of books read by students per week.

Q: A set of n = 6 scores has a mean of M = 10. Another set of scores has n = 4 and M = 20. If these two…

A: Given, First set has mean = 10 and n =6 Second set has mean = 20 and n =4

Q: On a psychology exam with a µ = 76 and σ = 12,  Tom scores at the mean,  Mary had a score of X =…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Explain the value of p?

A:

Q: 41 percent of young adult males play video games. 39 percent of young adult males have a full-time…

A: It is given that, 41% of young adult males play video games i.e. P(young adult pay video games) =…

Q: A pollster wishes to estimate the number of left-handed scientists. How large a sample isneeded in…

A:

Q: An industrial/organizational psychologist wants to improve worker productivity for a client firm,…

A: Solution: From the given information, the point estimate is M=2.0, the standard error is 5.1 hours…

Q: In October 2017, the Gallup Poll asked a sample of 10281028 U.S. adults, "Are you in favor of the…

A: Given, n=1028 Consider that the population standard deviation is σ, the level of significance is α.…

Q: What is the range of Joey’s first 14 quiz grades? What is the range of Joey’s quiz grades after his…

A: a) Range of first 14 quiz Lowest value=74 Highest value=98   Range=Highest value-Lowest Value…

Q: Here is a chart showing how many people are non-smokers, occasional smokers, and heavy smokers by…

A: Note:Hey there! Thank you for the question. Since you have posted two different questions together,…

Q: A cognitive psychologist working in the area of suggestion asked a sample of children to solve as…

A: c)The degree of freedom=n1+n2-2=7+7-2=12   Then, at α=0.05, the critical value of t is 1.782.

Q: A pollster wishes to estimate the proportion of United States voters who favor capital punishment.…

A:

Q: A population has a mean of μ = 40. If 5 points are added to each score, what is the value for the…

A: Let a population has n units,X1,X2,....,Xn.Then the total sum of the population is S=X1+X2+...+Xn.…

Q: A telecommunications company conducted a survey about cell phone companies. Of 1800 randomly and…

A: given  x = 1275 preferred AT&T to Sprint n =Of 1800 randomly and independently selected people…

Q: In fall 2014, 36% of applicants with a Math SAT of 700 or more were admitted by a certain…

A:

Q: (d) If the bottom 10% of students will fail the test, what is the lowest mark that a student can…

A: Given that, the mean value is μ=75 and standard deviation σ=15. It is known that, the formula for…

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

A:

Q: An industrial/organizational psychologist wants to improve worker productivity for a client firm,…

A:

Q: A researcher wants to determine what proportion of all high school students plans to attend…

A: Obtain the critical value at 90% confidence level:It is given that the margin of error is 0.02. The…

Q: If in a discrete data, 75% of the values are less than 30, then......?

A: we know that,  If Q1 is first quartile then we can say that 25% data points are below Q1. If Q2 is…

Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month. Part…

A: Solution: a. Let X be the number of oil tankers that had spills and n be the number of tankers. From…

Q: Given x = 0, 1, 2, 3, 4, 5 how is the mean 1.5? Shouldn't the mean of x be 2.5?

A: Measures of Central Tendency: A measure of central tendency represents the central value or typical…

Q: America OnLine published a survey question. Among the 2,300 Internet users who responded, 20%…

A: From the given information, America OnLine published a survey question. Among the 2,300 Internet…

Q: A recent polls show that 61% of adult Americans are comfortable with the legalization of marijuana,…

A:

Q: The boxplot below shows salaries for Construction workers and Teachers. If a person is making the…

A: We have to find answer from given box plots.

Q: Part D What percent of the girls in the fifth-grade class voted for Ms. Husted as their favorite…

A: Answers of Part A, Part B, and Part C are Correct.

Q: A cognitive psychologist working in the area of suggestion asked a sample of children to solve as…

A: According to our answering guidelines, we can answer only first three subparts of a question and the…

Q: In 2001, the Gallup poll found that 81% of American adults believed that there was a conspiracy in…

A: Given that, x=634,n=1039 The sample proportion is,

Q: Which of the following data would best be represented by a pie chart? The number of students who…

A: The percentage of QCC students in each major (that helps to form a over all cumulative percentage)…

Q: To get a grade of C + , a student must have a mean average of 77 or greater. Jim has a mean average…

A: Jim has mean average of 76 for 10 quizzes. i.e. Jim has scored total of 76×10=760, combining all 10…

Q: What proportion of the population score above an 18 on the ACT? What proportion of students score…

A: Given: Let X denote the SAT score thus, X~ N(500, 1002) Let Y denote the ACT score thus, Y~ N(20,…

Q: Solve the following problem step by step please A newspaper does a survey of reading preferences…

A: 330=150(survey)+120(read electronic)+50(Physical)+10(do not read any format)

Q: Why is there more variation in the possible values of the studentized version of x¯than in the…

A: Because we are using s as an estimate of σ

Q: In fall 2014, 34% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: All the given data is shown in the tree diagram

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

A:

Q: If the mean of 5 values equals 34, then ΣΧ-

A:

Q: On a multiple choice test with 9 questions, each question has four possible answers, one of which is…

A: It is given that there are 9 questions and each question having four possible, one of which is…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.