A telephone service representative believes that the proportion of customers completely satisfied with their local telephone service is different between the Midwest and the West. The representative's belief is based on the results of a survey. The survey included a random sample of 12601260 midwestern residents and 13401340 western residents. 46%46% of the midwestern residents and 42%42% of the western residents reported that they were completely satisfied with their local telephone service. Find the 98%98% confidence interval for the difference in two proportions. Step 1 of 3 :   Find the point estimate that should be used in constructing the confidence interval.

Q: Suppose the percent of licensed U.S. drivers (from a recent year) that are female is 48.30. Of the…

A: The study under consideration is percentage of licensed us drivers. Let F denote the female licensed…

Q: scientist is studying the relationship between stomach aches and headaches among students. On her…

A: Given that headaches could be classified as "sudden", "chronic", or "none". The survey also asked if…

Q: The director of student services at San Bernardino Valley College is interested in whether women are…

A: Given information- Significance level, α=0.10 p1 = proportion of women p2 = proportion of men We…

Q: The Consumer Reports Restaurant Customer Satisfaction Survey is based upon 146,099 visits to…

A:

Q: A survey of a group's web habits for the past month obtained the following information. 44% visited…

A: According to the given information, we have Given that a survey of a group's web habits for the past…

Q: “Snoqualmie” is a name shared by a waterfall and a tribe of Native Americans. In a study of the…

A: The provided data is,

Q: You may need to use the appropriate technology to answer this question. During the first 13 weeks of…

A: Chi square χ2 test : Chi square test is used to test whether the distributions of categorical…

Q: (a) State the null hypothesis H, and the alternative hypothesis H₁. Ho: O H₁ :0 (b) Determine the…

A: Note: According to Bartleby guidelines expert solve only one question and maximum three subpart of…

Q: Canadian teens that use Is there a statistically significant difference between the use of social…

A:

Q: Using this information, the researcher begins to conduct a chi-square test with an alpha level of…

A: It is given that Number of categories of row variable, a = 2 Number of categories of column…

Q: The percent of licensed U.S. drivers (from a recent year) that are female is 48.60. Of the females,…

A: It is given that, 48.60% drivers are female.

Q: The following two-way table of data gives the number of female and male faculty members for…

A: From the provided information, The table is as follow:   Female Male Total Assistant professors…

Q: The director of student services at San Bernardino Valley College is interested in whether women are…

A: 1)

Q: n 1995 a magazine reported the results of a poll of adult Americans in which it asked, "Have you…

A:

Q: The Women's Institutional Studies group at a Midwestern uni members in the various units on campus…

A: Using Excel formula "=NORM.S.INV(1-(0.02/2))", the z value for 98% confidence level is obtained as…

Q: Use the Plan, Solve and Conclude steps in answering this question

A:

Q: 2) A survey divided students' responses into "Urban," "Suburban," and "Rural" school areas. Is there…

A: Chi square χ2 test: Chi square test is used to test whether there as an association (or)…

Q: A professional marketing survey involves product recognition in New York and California. Of 558 New…

A: We have to test claimm..

Q: recent study reported that 12% of people toss away about half of what they buy at the grocery store.…

A: From the given information we conduct Z test for proportion.

Q: Resorts & Spas, a magazine devoted to upscale vacations and accommodations, published its Reader's…

A: Hi! Thank you for posting the question. Since your question has more than three sub-parts, we have…

Q: A survey of a group's web habits for the past month obtained the following information. 31% visited…

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

Q: Bryan is conducting research on personality and health behaviors of college students. If he asks…

A: According to the given information, we have Given that Bryan is conducting research on personality…

Q: Resorts & Spas, a magazine devoted to upscale vacations and accommodations, published its Reader's…

A: The dependent variable is Overall. The independent variables are comfort, amenities and in-house…

Q: Please answer part E only

A: to solve Part E  we have to answers a to c As you answers A to C we solve only part e

Q: The director of student services at Oxnard College is interested in whether women are more likely to…

A: Instruction : "please answer d, e, f" For Women: Sample size , n1 = 386 + 275= 661 sample…

Q: A school psychologist wants to test the effectiveness of a new method of teaching art. She recnuits…

A:

Q: A poll tracks the favorite sport of Americans who follow at least one sport. Results of the poll…

A: O means observed values.E means Expected values.Observed…

Q: Two psychologists surveyed 562 children in grades 4, 5 and 6 in elementary schools in Michigan. They…

A: Grades Popular sports Total Boy 120 67 87 274 Girl  151 121 33 305 Total 271 188 120 579

Q: A study by a reputable research group captured multitasking activities of adults who use different…

A: Given information: It is given that in a group of study 320 of 442 use smartphones, 192 of 350 use…

Q: The director of student services at San Bernardino Valley College is interested in whether women are…

A:

Q: In each scenario, identify the population, the sample, and any population parameters or sample…

A: Population is the set of all subjects of interest.

Q: The accompanying table summarizes data from a survey of 3,594 parents with school-aged children. In…

A: Given Information: In a survey parents were asked if they were completely satisfied with the…

Q: Public relation companies conducted two surveys about deodorants.  The first survey asked a random…

A: Solution CI=(0.1,0.3) Choose statement 'A'

Q: x Resorts & Spas, a magazine devoted to upscale vacations and accommodations, published its…

A: Given: N=20

Q: A transportation engineer at OSU conducts a study on bus ridership to the 14th and Monroe bus stop…

A: Systematic sampling: Systematic sampling involves of first considering a starting point for…

Q: A study was performed to examine the personal goals of children in grades 4, 5, and 6. A random…

A:

Q: In 2003 and 2017 a poll asked Democratic voters about their views on the FBI. In 2003, 45% thought…

A: Given :  p^1=0.45p^2=0.74n1=n2=n=1300The formula for confidence interval for the difference in the…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.