500 apples are taken at random from a large basket and 50 are found to be bad. Estimate the proportion of bad apples in the basket and assign limits within which the percentage most probably lies.

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

A: It is given that 110 students at a college where 69 students said that they had completed their…

Q: The placement test for a college has scores that are normally distributedwith μ= 400 and σ= 75. If…

A:

Q: Find the proportion of employees who take at least three personal days.

A: Given : Let random variable "X"  represent the number of personal days the employees take in a year…

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: 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: physicians

A: Number of success = x= 3145 n=5804

Q: In a pharmaceutical company, the proportion of injection bottles found defective were 0.2, 0.1, 0.8,…

A:

Q: The men hired by a certain city police department must be at least 69 inches tall. If the heights of…

A: Given μ=70 inches and σ=2 inches We need to find, Z=X-μσ=69-702=-12=-0.5 Now to find the required…

Q: When 345 HS students were surveyed, 125 said that they completed a driver's education class prior to…

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Q: Insurance companies are interested in knowing the percent of all drivers who always buckle up before…

A: According to the given information in this question We need to find the minimum number you would…

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: Here are the fuel efficiencies (in mpg) of 8 new cars. 45, 20, 45, 14, 34, 22, 18, 28 What is the…

A: Given information- We have given the data of the fuel efficiencies of 8 new cars (arranged in…

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

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Q: If the sampled tilapia number 500, how many of these are expected to weigh between 330 and 394…

A: Given that mu =370.2 , s.d = 32.7

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

A:

Q: Find an estimates of the average number of accidents per week in two different junctions.

A: Here given, Speed cameras (SC) are used to reduce the risk of accidents in accident-prone zones in…

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: You survey 100 people and find that 75 of them would prefer to work at home to some extent. When…

A: Given: You survey 100 people and find that 75 of them would prefer to work at home to some extent.…

Q: Suppose that the results of a survey show that 35% of people consider summer as their favorite…

A: Critical value: Using the z-table, the critical value at 95% confidence level is

Q: What is the pack efficiency of the tennis ball can?  That is, the 3 tennis balls represent what…

A: Given: 3 tennis balls are packed in a tennis ball can. The objective is to find the packing…

Q: 129 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: All patients admitted to a particular hospital can be released on the same day or kept overnight for…

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

A: Given: In a college 80 students completed their English 101 course with 48 students being yes. To…

Q: is an outlier?

A: a) Outlier: The Observation which lies outside the control limit is called an outlier. an outlier is…

Q: A data set has a median 70, 1st quartile 65 and 3rd quartile 85 .Which of the following will…

A: Given that median = 70,  First quartile Q1 = 65 Third quartile Q3 = 85, then Inter quartile range…

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

A:

Q: A sample consists of n = 16 scores. How many of the scores are used to calculate the range?

A:

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

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Q: 81 students at a college were asked whether they had completed their required English 101 course,…

A: The number of students said yes (x) is 54 and the sample size (n) is 81.

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

A: For the given data n = ?

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: The Humane Society is interested in finding out how many households in America have at least one…

A: The provided information are: Confidence level = 95% = 0.95 Margin of error (E) = 4% =0.04 From the…

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: Here are the fuel efficiencies (in mpg) of 15 new cars. 49, 35, 17, 21, 27, 23, 45, 50, 39, 51, 41,…

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: If a coin is flipped 225 times and the number of Hs is 75. Compute the proportion of Hs. Round to…

A:

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

A:

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: According to the results of a survey, 40% of 396 Leople indicated that American football is their…

A: Given Data: p^=0.4   Margin of error=0.04   Assuming significance level of 0.05 z0.05/2=1.96

Q: Wildlife biologist inspects 153 deer taken by hunters and find 32 of them carrying Lyme disease…

A: According to the provided information, n=153x=32p=xn=32153=0.209

Q: 85 students at a college were asked whether they had completed their required English 101 course,…

A: Best point estimate:The best point estimate of population proportion is the sample proportion.

Q: 400 oranges are taken from a large consignment and 50 are found to be bad. Estimate the percentage…

A:

Q: Suppose that the results of a survey show that 40% of people consider summer as their favorite…

A: Given Data: Let 'n' be sample size p^=0.4 Margin of error=0.04   Assuming level of significance to…

Q: A researcher wishes to estimate the proportion of college students who own a car. He wants to be 95%…

A:

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

A:

Q: In a sample of 40 mice, a biologist found that 42% were able to run a maze in 30 seconds or less.…

A: For large n, the estimate of σP^2 = P(1-P)/n is σP^2 = P^(1 – P^)/n and we also have √n(P^ - P)/…