Addmissions officer sampled 124 entering freshmen and found that 35 of them scored less than 530 on the math SAT  The point estimate for the proportion of all entering freshmen at this college who scored less than 539 on the math SAT is

Q: You are considered to have an intellectual disability (ID) if you score in the lowest 2.5% of the…

A: Given data, μ=100 σ=15 P(X<x)=2.5%=0.025

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: The manager of the Danvers-Hilton Resort Hotel stated that the mean guest bill for a weekend is $600…

A: We have the following information: The manager states that mean guest bill for a week-end is $600 or…

Q: Prison facilities that belong to the bottom 10% of the survey population shall be asked to…

A: Here use normal distribution table for z value

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 is conducted to determine the opinions of people on global warming. In a random sample of…

A:

Q: A group of randomly selected members of Mothers' Club were asked how many kids they have. The table…

A: The most reasonable estimate for the number of mothers’ club members who have fewer than 2 kids is…

Q: The average verbal SAT score for the entire class of entering freshmen is 530. However, if you…

A: given  The average verbal SAT score for the entire class of entering freshmen is 530. However, if…

Q: estimate how many people you would need to survey in order to estimate the percentage in your…

A: here given , Suppose you want to estimate the percentage of employees who want to work from home.…

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

A:

Q: an you conclude that the percentage of people aged 18-29 who have a tattoo is less than 25%

A: Given : n=830 , X=166 , p0=0.25 , α=0.01 The estimate of the sample proportion is ,…

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: A random sample of 2,000 driver's license applications found that 17% reported their eye color as…

A: Solution: Given information: n= 2000 Sample size  p^= 0.17 Sample proportion Assumed Confidence…

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

A:

Q: An analysis was conducted to determine whether the average height of the 25 girls in the same class…

A: To test whether the average height of 25 girls is different from the general population of 15-year…

Q: In a survey of 300 freshman, 213 stated that they planned to take business courses. Assuming the…

A: The point estimate of the population proportion is the sample proportion. It is given that 213 out…

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 local school is conducting another survey to determine the proportion of students at the school…

A: Confidence interval is defined as the range that contains the value of the true population…

Q: In an Adecco staffing survey of 1000, adults in the US, 140 said the salary was the most important…

A: From the provided information, The sample size is 1000 which is sufficiently large and out of which…

Q: It is thought that 12% of all students taking a particular course received a grade of A. In a sample…

A:

Q: Gap, Express, Zara, and America Online are just a few of the many companies interested in knowing…

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: 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: The sales force at a certain company successfully closed 92 out of 200 sales calls. What was their…

A:

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: The manager of the Postal Services claims that 98 percent of their mail are delivered on time. He…

A:

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

A:

Q: A researcher measures eye color for a sample of n = 50 people.  Which measure of central tendency…

A:

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: A Chinese cell-phone manufacturer exclusively uses robots in one of its factories. A random test run…

A:

Q: Only about 10% of all people can wiggle their ears. Is this percent different for millionaires? Of…

A: Here use single proportion z test Only about 10% of all people can wiggle their ears. Is this…

Q: The marketing research company comScore, Inc. reported that 65% of online searches in March 2010…

A: The proportion of sample and the population significance difference is tested using the z test.…

Q: 2) Estimate the difference between the ages of male and female respondents with 95% confidence.

A: Given information:   Female Male Mean 47.15625 44.16667 Sum 1509 795 S.D 14.14923 19.87979…

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: The recidivism rate for convicted sex offenders is 11%. A warden suspects that this percent is…

A:

Q: A car wash is assessing the average wait time for its customers. The median wait time is 4 minutes.…

A: When we talk about median , it is the middle number in a sorted, ascending or descending, list of…

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

A: Decision rule using p-value :      1) Reject null hypothesis (H0) if p-value less than significance…

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

A:

Q: The sales force at a certain company successfully closed 94 out of 200 sales calls. What was their…

A:

Q: Find the technique for gathering data in the study below. An analysis of a sample of 31,000 patients…

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: Getaway Travel Agency surveyed a random sample of 45 of their clients about their vacation plans. Of…

A: 21 clients of 45 expected to go on 3 vacations in the next year Probability = 21/45   The numbers of…

Q: A research scientist wishes to test the claim that the mean number of units taken by community…

A: Fot test  the claim following conditions should be satisfied: 1.The sample is simple random sample…

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.