The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level. Step 1 of 2: Suppose a sample of 2845 tenth graders is drawn. Of the students sampled, 2276 read above the eighth grade level. Using the data, estimate the proportion of tenth graders reading at or below the eighth grade level. Enter your answer as a fraction or a decimal number rounded to three decimal places.

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A: Given, In the sample of 239 suspected criminals is drawn. Of these people 165 were not captured.…

Q: 110 students at a college were asked whether they had completed their required English 101 course,…

A: Total students = n = 110,  Number of students completed English 101 course = x = 81.

Q: 100 students at a college were asked whether they had completed their required English 101 course,…

A: Given information: Total number of students at a collage(n)=100. Number of students say "yes"…

Q: A survey of 78 snowmobilers revealed that 51 of them have driven under the influence of alcohol.…

A: Given data, n=78 x=51

Q: 99 students at a college were asked whether they had completed their required English 101 course,…

A: The point estimate of population proportion is sample proportion.

Q: (c) If the average cost of travel by bus increases by 10%, but the travel time by bus de- creases by…

A: This is a problem related to percentage. Based on the general formula and concept we will answer the…

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: The formula for the sample size is as follows: Here,zα/2 is the critical value at 95% confidence…

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

A: Given Information: Country A: Sample size n1=1004 Sample proportion p^1=0.53 Country B: Sample size…

Q: 135 students at a college were asked whether they had completed their required English 101 course,…

A: Point estimate: The population parameter which is estimated by using sample statistic is termed as…

Q: In the year 2020, City A had a population of 200,000. 300 existing cases of colon cancer were…

A: GivenThe population of City A =200000The existing cases of Colon Cancer =300The number of cases…

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A: Given that Number of sample =306 Number of captured=100 We have to find the proportion of people who…

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

A:

Q: 110 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: In a sample of 45 men, 27 said that they had less leisure time today than they had 10 years ago. In…

A:

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A: Assume that p is the true population proportion of people who were caught after being on the 10 Most…

Q: What percentage of buyers paid between $14,500 and $16,000? %

A: Here Given Figure for the Normal distribution with  Mean=μ=$16,000σ=$ 500

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: Sample Size: The formula for the sample size is as follows: Here, zα/2 is the critical value at 99%…

Q: The table to the right shows the number of people testing positive for a certain disease amongst…

A: Required probability is P(tested positive | have disease)

Q: A researcher wishes to estimate the proportion of corporate executives whose annual salary is over…

A:

Q: The data collected from the 12 female & the calculations asking in the project are shown in the…

A:

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

A:

Q: When 410 college students were surveyed,150 said they own their car. Find a point estimate for p…

A: Given Data: The number of college student was surveyed is: n=410 The number of a student owning…

Q: In a sample of 47 men, 36 said that they had less leisure time today than they had 10 years ago. In…

A: We have to perform test for difference in two proportion.

Q: a sample of ore is found to be 0.0012% diamond and 0.033% copper. What is the percentage of matter…

A: Given:- A sample of ore is found to be 0.0012% diamond and 0.033% copper To find:- The percentage of…

Q: A researcher wishes to estimate the proportion of adult males who are less than 5 feet 5 inches…

A: It is given that margin of error (E) is 0.04 and the confidence level is 0.90.

Q: c. Answer part (b) for a sample of 580 (to 4 decimals). -0.888:

A:

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A: The proportion of people who were caught after being on the 10 most wanted is obtained below:The…

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

A:

Q: The percentage of buyers who paid between $14,000 and $22,000 is %.

A: Let , X→N(μ=18000 , σ=2000) By  using 68-95-99.7 rule ,  We want to find the P(14000<X<22000)…

Q: What is the percentage of area below z= -1.51? Round to nearest tenth as needed

A: The z-score value is -1.51.

Q: A pharmaceutical researcher wants to determine the proportion of people who believes that branded…

A: For the given data n = ?

Q: who appear on the list that are actually caught. Step 1 of 2: Suppose a sample of 233 suspected…

A: Favorable Cases XX = 7272 Sample Size NN = 233233 The proportion of people who were caught…

Q: Estimate the following percentages without using a calculator. 10.1% of 7,800 is  0.99% of 83,583…

A: Percentage= (value ×percent)/100

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

A: Obtain the proportion of oil tankers that had spills. The proportion of oil tankers that had spills…

Q: 2 Considering the 5800 enrollees in the College of Education, a researcher would like to make a…

A:

Q: Suppose that the results of a survey show that 53% of people consider summer as their favorite…

A: Given that Results of a survey show that 53% of people consider summer as their favorite season.…

Q: The state education commission wants to estimate the fraction of tenth-grade students that have…

A: Solution

Q: For a survey based on 1,900 adults, what is the conservative margin of error as a proportion? (Round…

A: MOE

Q: a) What proportion of the sampled wafers had (P 2 8)? b) What proportion of the sampled wafers had…

A: 5. a) The frequency is, Number of Particles Cumulative frequency Frequency Number of Particles…

Q: 86 students at a college were asked whether they had completed their required English 101 course,…

A: Point Estimate of Population proportion (P) = p^ = xn

Q: 82 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: 133 students at a college were asked whether they had completed their required English 101 course,…

A: Given, The objective is to find the best point estimate for the proportion of students at the…

Q: The head of a computer science department is interested in estimating the proportion of students…

A: Solution: From the given information, confidence level is 0.95, p=0.35 and E=0.10.

Q: The number of passengers using a rail link fell from 190,205 to 174,989. Find the percentage…

A: In this question, we have to find the percent decrease in rail link.

Q: 140 students at a college were asked whether they had completed their required English 101 course,…

A: Here given that, Sample size is n= 140 And we need to find proportion for 83 students.  So x= 83

Q: 114 students at a college were asked whether they had completed their required English 101 course,…

A: From the provided information, the total students of collage (n) = 114The number of students who…

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

A: Givensample size = 563 tankers number of ships did not have spills = 445  number of ships have…

Q: You would like to be 99.9 confident that your estimate is within 2% of the true population…

A:

Q: 104 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A: Introduction :-  Using the data, we have to estimate the proportion of people who were caught after…

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.