The number of riders of a campus bus that transports students from the parking lot to the campus on 12 randomly chose trips yielded an average and standard deviation of 54.4167 and 7.2420, respectively. What is the 90 percent confidence interval for the daily average number of students who ride the campus from the parking lot?

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: In a sample of 31 students, the mean scholarship amount received was $802, with a standard deviation…

A: Given Information: Sample size n = 31 Sample mean = $802 Standard deviation = $22.47 Confidence…

Q: . If a pilot study reveals the mean size of homes in a town to be 120 square meters with a standard…

A:

Q: In a random sample of 40 visitors to a certain theme park, it was determined that the mean amount of…

A:

Q: A senior manager, responsible for a group of 120 junior executives, is interested in the total…

A: It is given that sample members spent a total of 143 hours and the sample size n is 35.

Q: In a random sample of 60 dog owners enrolled in obedience training, it was determined that the mean…

A:

Q: In a survey of 20222022 adults in a recent​ year, 716716 made a New​ Year's resolution to eat…

A: It is given that, In a survey, the total number of participants (n) is 2022, in which 716 adults in…

Q: Fifteen Smart Cars were randomly selected and the highway mileage of each was noted. The analysis…

A: Total number for cars randomly selected =15 The variable of interest here is the highway mileage of…

Q: In a recent survey of 200 households, 172 had central air conditioning.  Find the 85% confidence…

A: Given that In a recent survey of 200 households, 172 had central air conditioning That is…

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: A commonly cited standard for one-way length (duration) of school bus rides for elementary school…

A:

Q: A random sample of 40 home theater systems has a mean price of $500 and a standard deviation of $60.…

A: Construct the 99% confidence interval for the population mean The 99% confidence interval for the…

Q: Fifteen Smart Cars were randomly selected and the highway mileage of each was noted. The analysis…

A:

Q: A local supermarket spent $250,000 remodeling. Prior to remodeling, the average daily receipts were…

A: From the provided information, Sample size (n) = 18 Sample mean (x̅) = $59800 Standard deviation (s)…

Q: in a survey of 2042 adults in a recent​ year, 715 made a New​ Year's resolution to eat healthier.…

A:

Q: A sample of 200 lightbulbs was tested and it was found that 11 were defective. Calculate a 95%…

A:

Q: In analyzing the city and highway fuel efficiencies of many cars and​ trucks, the mean difference in…

A:

Q: The manager of a fast-food restaurant wishes to estimate the mean waiting time customers spend at…

A: It is given that the sample size is n=56. The sample mean waiting time is x¯=6.35. The sample…

Q: A commonly cited standard for one-way length (duration) of school bus rides for elementary school…

A: Solution:Claim: μ≠30H0: average time is equal to 30 minsH1: average time is different from 30 mins

Q: In a random sample of 41criminals convicted of a certain​ crime, it was determined that the mean…

A:

Q: A random sample of 300 graduating high school seniors was polled across a particular tristate area,…

A:

Q: In a simple random sample of 30 shoppers at Geedgate Mall, the sample mean amount bspent last week…

A: The provided information are: Sample sizen=30Sample meanx¯=259.48Sample standard deviations=39.18.

Q: A commonly cited standard for one-way length (duration) of school bus rides for elementary school…

A: Given: x=38s=8μ0=30

Q: A large department store found that it averages 362 customers per hour. Assume that the standard…

A:

Q: A commonly cited standard for one-way length (duration) of school bus rides for elementary school…

A: The given information is the time duration of school bus rides for elementary school children in…

Q: In a study of academic procrastination, the authors of a paper reported that for a sample of 451…

A: Given Information: Sample size (n) = 451  Mean value (x) = 7.14 hours Standard Deviation (s) = 3.20…

Q: Fifteen SmartCars were randomly selected and the highway mileage of each was noted. The analysis…

A:

Q: In crash tests of 28 Honda Odyssey minivans, collision repair costs are found to have a distribution…

A: Given, Sample size = 28 Sample mean = 2020 Sample standard deviation = 350   Since the population…

Q: In a random sample of 81 audited estate tax​ returns, it was determined that the mean amount of…

A: Given that, Mean, X bar = 3483 And standard deviation, s= 2551 Sample size, n= 81 Confidence…

Q: A commonly cited standard for one-way length (duration) of school bus rides for elementary school…

A: Given :  A commonly cited standard for the one-way length of school bus rides for elementary school…

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: In a sample of 32 students, the mean scholarship amount received was $887, with a standard deviation…

A: Given information: n=32x¯=887s=27.4 df=n-1=32-1=31 Confidence level is 90% Significance level is…

Q: A local police department attempted to estimate the average rate of speed of vehicles along a strip…

A:

Q: In a survey of 2135 adults in a recent​ year,748 made a New​ Year's resolution to eat healthier.…

A: From the provided information, Sample size (n) = 2135 748 made a New Year’s resolution to eat…

Q: In a sample of 56 tax returns filed by local hotel managers in a recent year, the taxable incomes…

A: Given: n=56 Mean= 41225 Standard deviation = 6112

Q: A telephone company claims that private customers pay on average $17.10 per month for long-distance…

A: The provided sample mean is  = 22.10 and the Sample standard deviation is s = 6.71, and the sample…

Q: In a survey sample of 83 respondents, the mean number of hours worked per week is 39.04, with a…

A: Solution : The complete solution is given below in the attachment file.

Q: In an experiment, 37 randomly selected drivers drove from Pontiac to Detroit at random times. The…

A: From the given information, Sample size n=37 Sample mean = 39 Sample standard deviation = 4.8

Q: 3. Another engineer studies the strength of cables, which has a known population standard deviation…

A: Here we need to obtain the minimum sample size required to obtain a 97% confidence interval.

Q: A commonly cited standard for one-way length (duration) of school bus rides for elementary school…

A: we have given that  sample size n=100 ,xbar=38 and standard deviation =8 and mu=30

Q: For a simple random sample of 40 Honda Accords (4 cylinder, 2.4 liter, 5-speedautomatic), the mean…

A: Sample size , n = 40 Mean gas mileage, Standard deviation,

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

A:

Q: According to the Vivino website, suppose the mean price for a bottle of red wine that scores 4.0 or…

A:

Q: In a survey of 2024 adults in a recent​ year, 709 made a New​ Year's resolution to eat healthier.…

A:

Q: In a random sample of ten cell phones, the mean full retail price was $554.00 and the standard…

A: Given that Sample size n = 10 Sample mean = 554.00 Sample SD = 167.00 The critical value of t at 95%…

Q: Do younger people use Twitter more often than older people? In a random sample of 316 adult Internet…

A:

Q: A savings and loan association needs information concerning the checking account balances of its…

A:

Q: In a survey of 2033 adults in a recent​ year, 735 made a New​ Year's resolution to eat healthier.…

A: First find out the true population proportion .    Total number of adults in a survey = n= 2033…

Q: A commonly cited standard for one-way length (duration) of school bus rides for elementary school…

A: We want to find null hypothesis and alternate hypothesis

Q: In a sample of 45 students, the mean scholarship amount received was $854, with a standard deviation…

A: