In a random sample of 400 fast food orders, 180 contained at least one error. 1. What is the point estimate for the proportion of fast food orders with at least on error? [ Select ] 2. Construct the 99% confidence interval for the proportion of orders with at least on error [ Select ]

Q: In a sample of 16 fish from my pond it was found that 5 are under 165 grams in weight. Based on this…

A: Given  n=5 p= 5/16 = 0.312 1-p = 1-0.312 = 0.688 Standard error SE = p(1-p)/n

Q: The Diabetic Association of Pakistan sampled 4900 severely overweight Pakistanis between 20 and 59…

A: Given,sample size(n)=4900sample proportion(p^)=0.171-p^=1-0.17=0.83α=1-0.95=0.05α2=0.025Z0.025=1.96…

Q: In a simple random sample of 300 college students, 35.0 percent stated that they intended to pursue…

A: The random variable X follows normal distribution. We have to construct 95% confidence interval.…

Q: In a survey of 1,954 cellphone owners, adults aged 18 and over, 743 reported that they use their…

A: We have given that,  Number of favorable cases (X) = 430 and sample of the size (n) = 1954 Then,  We…

Q: Suppose that a random sample of 142 graduate-admissions personnel was asked what role scores on…

A: Given : Random sample of 142 graduate-admissions personnel Sample size (n)=142 Let X : No. of…

Q: Suppose a certain study reported that 27.7% of high school students smoke. Random samples are…

A: As per bartleby guideline expert have to answer first three subparts only..

Q: A sample of 100 homes in city A and 100 homes in City B was taken to estimate the proportion of the…

A: Given that, A sample of 100 homes in city A and 100 homes in city B were taken to estimate the…

Q: A simple random sample of 300 branches out of a total of 1200 branches of a UK travel agency found…

A: Given : Here population is total branches of a UK travel agency  Population Size (N) = 1200 Sample…

Q: A factory manager wishes to estimate the proportion of factory workers that use public…

A:

Q: In a study of the accuracy of fast food drive-through orders restaurant a had 203 accurate orders…

A: Note: It is not mentioned in the question whether 95% confidence interval need to be constructed for…

Q: When 38 campers are randomly selected and surveyed, it was found that the average number that prefer…

A: The summary of statistics is, x¯=24,σ=10.7,n=38 Critical values: By using the z-tables, the critical…

Q: Are boys more likely? A random sample of 24,468 records of newborn first born children revealed the…

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

Q: The manager of a well-known bank is interested to know whether online banking is more popular…

A:

Q: A large-sample 98% confidence interval for the proportion of hotel reservations that are canceled on…

A: From the provided information, Confidence level = 98% Confidence limits = (0.048, 0.112)

Q: A national polling organization wishes to gener- ate a 98% confidence interval for the proportion of…

A: Given data,E=3%=0.03Let p=0.50z-value at 98% confidence is Zc=2.326n=?

Q: In a recent study of 42 eighth graders, the mean number of hours per week that they watched…

A: Mean = 19.6 Standard deviation = 5.8 Sample size n = 42

Q: a simlpe random sample of 8 college freshmen were asked how many hours of sleep they typically got…

A: Box plot can be used to find the outlier. Box plot: Software procedure to draw box-whisker plot…

Q: a) Construct the 89% confidence interval for the population mean time. (b) If all the other…

A: (a) The sample size is 48, sample mean is 3.12, and standard deviation is 0.09. The degrees of…

Q: It was observed that 30 of the 100 randomly selected students smoked. Find the confidence interval…

A: It is given that, 30 out of 100 randomly selected students smoked i.e. proportion of the student who…

Q: A sample of 250 items from lot A contains 10 defective items, and a sample of 300 items from lot B…

A:

Q: From July 5-7, 2017, the Gallup Organization asked a random sample of 1,021 adults– aged 18 and…

A: From the information,  The sample proportion is, p^=59% The margin of error is, E=±4% The formula…

Q: A simple random sample of 35 cars and trucks in Vermont have a mean price of $18,702 with a standard…

A: In this question, we have given information35 cars and trucks in Vermont have mean $18702 and…

Q: Researchers have estimated that office workers in Belgium receive an average of 15 e-mails per day.…

A: It is given that, The sample mean is 15. The sample standard deviation, s is 3.5. The sample size, n…

Q: In a time-use study, twenty randomly selected managers spend a mean of 2.4 hours each day on…

A:

Q: 13) When 470 junior college students were surveyed, 155 said they have a passport. Construct a 95%…

A:

Q: 3- A random sample of 100 light bulbs is selected. Sixty were found to burn for more than 1,000…

A:

Q: 4. A random sample of 64 bicycle-riding adults in Portland indicated that 24 always wore a helmet…

A:

Q: In a random sample of 230 men , 18 or older , 142 were married. Construct and explain a 90%…

A: Solution: Let X be the number of married men 18 or older and n be the sample number of men. From the…

Q: The manager of the dairy section of a large supermarket chose a random sample of 250 egg cartons and…

A: 95 % Confidence Interval :

Q: A corporation employs 148 sales representatives. A random sample of 60 of them was taken, and it was…

A: Given information: The volume of orders taken in a month were compared from the same month last…

Q: Compute a 95% confidence interval for the difference between the proportion of students favoring…

A:

Q: In a sample of 95 recommendations, it is found that 56% of them made money. Determine the upper…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: construct a 95% confidence interval for the true proportion of the population having banking…

A: It ia given that Sample size n = 100 Number of persons having banking relations with either the…

Q: What is the smallest sample size needed to guarantee that the results of a study conducted to find…

A: Solution: a. From the given information, confidence level is 0.95, p=0.21 and E=0.03.

Q: 2. An electrical firm manufactures light bulbs that have a length of life that is approximately…

A:

Q: Based on a sample of 1000 adult Americans, USA Today reported that 840 of them preferred cheese on…

A: Given that on a sample of 1000 adult Americans, USA Today reported that 840 of them preferred…

Q: Suppose Apple claims that the average wait time for a customer calling the Apple Care support line…

A:

Q: Assume that in a survey of 2462 GAU Professors world-wide, 123 said that "all or almost all" of the…

A: Provided information is; x= success= 123 sample size(n)= 2462 Confidence interval for one sample…

Q: According to some car loan statistics, 44% of Americans are relying on an auto loan to pay for their…

A: Givenp^=0.44sample size(n)=1500confidence interval = 95%

Q: There is no prior information about the proportion of Americans who support free trade in 2018. If…

A:

Q: consider a random sample of 300 students in a university, 75 of them declared that they like playing…

A: A random sample of 300 students in a university in which 75 of them declared that they like playing…

Q: A random sample of 138 first years, 80 indicated that they would use the school's library more if…

A:

Q: To find the proportion of San Diegans subscribed to Disney+ in 2019, a researcher randomly selected…

A: Given: p=population proportionp^=101200n=200α=0.05z=1.96

Q: In a survey of 2569 adults in a recent​ year, 1303 say they have made a New​ Year's resolution.…

A: Given data  n= 2569 X = 1303

Q: What is the smallest sample size that guarantees that the margin of error is less than 3% when…

A:

Q: A market research company wants to estimate the proportion of households in the country with digital…

A: Given that n=80 and x=46.

Q: 5. It is observed that randomly chosen 40 students out of 100 have a daily reading habit. Construct…

A:

Q: suppose that in sampling for the population proportion, it is found that 20 out of 100 items are…

A:

Q: In a random sample of 536 judges, it was found that 295 were introverts. Let p represent the…

A: Given,

Q: A consumer agency estimate the proportion of all drivers who wear seat belts while driving. What is…

A:

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.