364 randomly selected light bulbs were tested im a laboratory, 124 lasted more than 500 hours. Find a point estimate of the proportion of all light bulbs that last more tham 500 hours.

Q: A random sample of 800 Tennessee residents is taken.  Of those 800 residents, 170 said their…

A: Given that total size of the sample= 800 Of those 800 residents, 170 said their favorite college…

Q: According to statistics reported on CNbC, a surprising number of motor vehicles are notcovered by…

A: Solution: a. Let X be the number of vehicles were not covered by insurance and n be the sample…

Q: A survey of 2390 musicians showed that 304 of them are left-handed. Find a point estimate for p, the…

A: Here Given sample size= n=2390                                         X=304

Q: A poll found that 78 people out of a survey of size 109 watch at least three hours of TV per day…

A: Given data, n=109 x=78 sample proportion p=?

Q: For a class of 60 students, the marks obtained in last semester’s Accounting exam showed that the…

A: Given that third quartile, Q3 = 70 marks

Q: A random sample of 2000 driver's license applications found that 17% reported their eye color as…

A:

Q: 103 students at a college were asked whether they had completed their required English 101 course,…

A: It is given that, 103 students at a college were asked whether they had completed their required…

Q: A survey of 2390 musicians showed that 398 of them are left-handed. Find a point estimate for p, the…

A: We have find population left handed..

Q: The mean monthly food budget for 44 residents of the local apartment complex is $⁢617. What is the…

A: The sample mean is given as $617.

Q: Form a sample of 500 items,30 were found to be defective. The point estimate of the population…

A:

Q: A large warehouse is filled with 5,238 tungsten light bulbs. An electronics engineer wants to…

A: Here sample statistics is sample mean So statistic of interest is sample mean lifespan of 18 bulbs

Q: Based on the attached ogive curve, determine approximately what percentage of the body weight is…

A: The percentage formula is, Percentage=Number of favourable observationsTotal number of…

Q: On April 20th, 2010, an explosion and fire on an oil rig operated by British Petroleum (BP) caused…

A:

Q: Provide an appropriate response. When 390 junior college students were surveyed,115 said that they…

A: It was given that 115 out of 390 junior college students have previously owned a motorcycle.

Q: The Bata Shoe Museum states that 16% of women wear shoes that are too small for their feet. A…

A: 16% women wear shoes that are too small for their foot. So, proportion of women wear shoes that are…

Q: The general aviation Manufacturers Association has reported the average annual number of hours flown…

A: Mean = 120 Standard deviation = 30

Q: The Bata Shoe Museum states that 4343% of women wear shoes that are too small for their feet. A…

A: Given,sample proportion(p^)=0.43margin of error(E)=0.015α=1-0.98=0.02α2=0.01Z0.01=2.3263       (from…

Q: The table below shows the number of i employees within a small construction company classified…

A:

Q: Twenty-five samples of 100 items each were inspected when a process was consideredto be operating…

A: The given information is that twenty-five samples of 100 times are inspected. In the 25 samples, the…

Q: A Polling agency wants to determine the percentage of waters in favour of extending tax cuts. they…

A:

Q: All patients admitted to a particular hospital can be released on the same day or kept overnight for…

A:

Q: 61 randomly selected lightbulbs were tested in a laboratory, 50 lasted more than 500 hours. Find a…

A: Introduction: A point estimate of a population parameter of interest may be defined as a single…

Q: A survey of 400 non-fatal accidents showed that 189 involved the use of a cell phone. Determine a…

A: Given that, In a survey of 400 non-fatal accidents showed that 189 involved the use of a cell phone.

Q: The IRS is interested in estimating the total number of tax accounts who has their own tax returns…

A: A random sample of 100 returns showed that 15 were audited; n=100 x=15 α=0.95

Q: A random sample of 4000 U.S.citizens yielded 2280 who are in favor of gun control legislation. Find…

A: Given:A rondom sample of 4000 U.S citizensyielded 2280 who are in favor of guncontrol…

Q: At the local college, a study found that students earned an average of 9.2 credit hours per…

A: From the given information, The average number of credit hours per semester is, x=9.2 The random…

Q: The highway department wants to estimate the proportion of vehicles on Interstate 25 between the…

A:

Q: In a random sample of 500 males and 600 females who did statistics, 128 males and 434…

A: Given information Subscript 1 denotes male and subscript 2 denotes female

Q: A researcher at a major clinic wishes to estimate the proportion of the adult population of the…

A: We have to find correct answer for given question..

Q: A senator wishes to estimate the proportion of United States voters who favor abolishing the…

A:

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: Out of 147 faculty members at Bellevue University, 13 said they can speak Spanish. Construct and…

A:

Q: Round the point estimate to the nearest thousandth. 445 randomly selected light bulbs were tested…

A: Given, No of light bulbs tested n = 445 No of light bulbs last more than 500 hours x = 316

Q: The length of bolts produced in a machine shop are normally distributed with mean length 11.8cm. A…

A:

Q: Compute the sample proportion of U.S. adults that avoid drinking regular soda or pop. Round your…

A: here given , A 2018 Gallup survey asked respondents to consider several foods and beverages and to…

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

A: Given that  Margin of error =E =1%=0.01 95% confidence.

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

A:

Q: A study is to be made to estimate the proportion of residents of a certain city and its suburbs who…

A: Given: Confidence level = 0.95, margin of error = E = 0.08.

Q: A Harriss poll taken surveyed 2016 adults and found that 423 of them had one or more tattoos. can…

A: The hypotheses for the test is given below.Null hypothesis:H0: p = 0.25Alternative hypothesis:H1: p…

Q: A marketing manager samples 150 people and finds that 87 of them have made a purchase on the…

A: a) From the provided information, Sample size (n) = 150 Number of people who have made a purchase on…

Q: Is the number of runs scored by a baseball team during a season quantitative and discrete?

A: Discrete random variable: A discrete random variable takes the countable number of real values. This…

Q: The PRC board examination has a mean score of 500 points. A review center promises to improve scores…

A:

Q: A quality control process finds 36.6 defects for every 6,100 units of production. What percent of…

A:

Q: The manager of a city recreation center wants to estimate the percent of city residents who favor a…

A: The confidence interval for the population proportion (single sample) is obtained by using the…

Q: A study at Harvard found that 44% of their students binge drink.  You are at Princeton doing a…

A: According to the provided information, a study at Harvard found that 44% of their students binge…

Q: Historically, the proportion of students entering a university who finished in 4 years or less was…

A: H0 : p =0.63 H1 : p <0.63 Population proportion = p₀ = 0.63

Q: The IRS is interested in estimating the total number of tax accounts who has their own tax returns…

A:

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

A: Given that, Critical value: Using the z-table, the critical value at 90% confidence level is

Q: Fifty people are selected randomly from a certain population and it is found that 12 people in the…

A: Sample size = n = 50 Sample number of events = x = 12 Sample proportion = p̂ = x/n = (12/50) =…

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.