The amount of time taken by a bank teller to serve a randomly selected customer has a normal distribution with a mean of 2 minutes and a standard deviation of 0.5 minutes. Find the probability that at least one of four randomly selected customers will need more than 2.50 minutes to be served
Q: Find f0.90f0.90 for FF distribution with (22,77) degrees of freedom. f0.90=f0.90= (Round the…
A: Given that df1 = 22 , df2 = 77 P(F > f) = 0.90
Q: me that a randomly selected subject is given a bone density test. Those test scores are normally…
A: test scores are normally distributed with a mean of 0 and a standard deviation of 1 find the…
Q: On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of…
A: Let X denote the IQ of an individual and it follows normal distribution The distribution of X is,…
Q: Assume that the time spent by students in extra curricular activities per week is normally…
A:
Q: The average American man consumes 9.8 grams of sodium each day. Suppose that the sodium consumption…
A: From the provided information, Mean (µ) = 9.8 grams Standard deviation (σ) = 1 grams
Q: Suppose that a category of world class runners are known to run a marathon (26 miles) in an average…
A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…
Q: Find the z-score for a single member of the population which has value 86. if the population has a…
A:
Q: d) 85% of all students finish the activity in less than secon Submit Question
A: X~N( μ = 38.6 , ? = 6.3 ) μ = 38.6 , ? = 6.3 Z-score =( x - μ )/?
Q: The mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally…
A: Solution-: Given: μ=17,σ=0.8 Let, X= be the height of a randomly selected adult giraffe ∴X→…
Q: The average production cost for major movies is 57 million dollars and the standard deviation is 22…
A: The Z-score of a random variable X is defined as follows: Z=(X–µ)/σ Here, µ and σ are the mean and…
Q: Suppose that Sacramento workers have a mean commute of 17 minutes and commute times are normally…
A:
Q: The following table shows the number of people that have either 0, 1, 2 or 3 cars registered in…
A:
Q: Assume the random variable X is normally distributed with mean u = 50 and standard deviation o = 7.…
A: Given,μ=50σ=7Find 96th percentile?
Q: The mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally…
A: Mean, μ=17 Standard deviation, σ=1 Let X be the height of a randomly selected adult giraffe. X ~…
Q: A library checks out an average of 332 books per day with a standard deviation of 58 books. The…
A: Given that a library checks out an average of 332 books per day with standard deviation of 58 books.…
Q: Los Angeles workers have an average commute of 34 minutes. Suppose the LA commute time is normally…
A: Given information- Population mean, μ = 34 minutes Population standard deviation, σ = 14 minutes Let…
Q: During a wisdom teeth removal procedure, 1, 2, 3, or 4 wisdom teeth are removed, depending on the…
A: We have given that, mean (μ) = 3.90 and standard deviation (σ) = 0.88 and sample size (n) = 10
Q: Hayley has 120 apple trees of a certain variety in her orchard. She estimates the population of…
A: We have given that Sample size n= 120 , mu= 99 , sigma =22 X~N(mu, sigma^2) Z-score = (x - mu) /…
Q: The average American man consumes 10 grams of sodium each day. Suppose that the sodium consumption…
A: given data normal distribution μ = 10σ = 0.8
Q: Los Angeles workers have an average commute of 27 minutes. Suppose the LA commute time is normally…
A: Let us consider, X be a random variable which is used to denote the commute of LA Angels workers…
Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…
A: xP(x)00.00310.02620.11830.21240.27450.22760.10870.02780.005
Q: The average American man consumes 10 grams of sodium each day. Suppose that the sodium consumpt of…
A: a) The mean is 10 and the standard deviation is 0.8.
Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…
A:
Q: The mean weight of all Goliath grouper caught on the Treasure coast is 428 pounds, with a standard…
A: From the provided information, Mean (µ) = 428 Standard deviation (σ) = 59
Q: The mean is μ = girl(s). (Round to one decimal place as needed.) The standard deviation is o =…
A: Number of girls xP(x)00.00310.03220.11430.22740.26650.21460.11270.02980.003
Q: The average score of all golfers for a particular course has a mean of 61 and a standard deviation…
A: Mean()=61Standard deviation()=4Sample size(n)=64
Q: Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs.…
A: Given information: μ=245.7σ=34.5sample size, n=32
Q: A hiring manager rates a large pool of job applicants for eligibility for a job vacancy. The ratings…
A: Determine the value of rating score that separates the top 10% with the rest. The value of…
Q: The average amount of money that people spend at Don Mcalds fast food place is $7.3500 with a…
A:
Q: The average American man consumes 9.9 grams of sodium each day. Suppose that the sodium consumption…
A: Normal distribution:If a random variable X follows normal distribution with mean µ and the standard…
Q: On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of…
A: Given information Mean µ = 107 Standard deviation σ = 17
Q: According to the latest internet usage survey of college students, the amount of time spent on…
A: From the provided information, Mean (µ) = 210 minutes Standard deviation (σ) = 45 minutes X~N (210,…
Q: The average American man consumes 9.6 grams of sodium each day. Suppose that the sodium consumption…
A: Given,Mean μ = 9.6Standard deviation σ = 0.8
Q: A banker finds that the number of times people use automated-teller machines (ATMs) in a year are…
A: Introduction Each possible situation of a random phenomenon is indicated by the probability…
Q: On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of…
A: Given, the IQ of an individual of the ruling species follows normal distribution with mean 102 and…
Q: O A. 0.8615 OB. 0.8819 O C. 0.0062 OD. 0.9938
A: Let X be the random variable from normal distribution with mean (μ) = 124, standard deviation (σ) =…
Q: On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of…
A: Solution-: Given: μ=117,σ=14 Let, X= IQ of an individual ∴X→ N(μ=117,σ2=142) We find, (b) P[a…
Q: The average score of all golfers for a particular course has a mean of 61 and a standard deviation…
A:
Q: Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation of 2.4…
A: Solution: Denote X as the diameter of a randomly selected metal shaft produced in the manufacturing…
Q: he mean weight of all Goliath grouper caught on the Treasure coast is 377 pounds, with a standard…
A: The normal distribution in the center are generally denser and basically less denser at tails.…
The amount of time taken by a bank teller to serve a randomly selected customer has a
Round to 4 decimal places
Step by step
Solved in 2 steps with 1 images
- The average amount of money that people spend at Don Mcalds fast food place is $7.9000 with a standard deviation of $1.9900. 12 customers are randomly selected. Please answer the following questions, and round all answers to 4 decimal places where possible and assume a normal distribution. For the 12 customers, find the probability that their average spent is more than $8.4183. Find the probability that the randomly selected 12 customers will spend less than $101.0196. The owner of Don Mcalds gives a coupon for a free sundae to the 4% of all groups of 12 people who spend the most money. At least how much must a group of 12 spend in total to get the free sundae? $Los Angeles workers have an average commute of 31 minutes. Suppose the LA commute time is normally distributed with a standard deviation of 13 minutes. Let X represent the commute time for a randomly selected LA worker. Round all answers to 4 decimal places where possible.a. Find the probability that a randomly selected LA worker has a commute that is longer than 27 minutes. b. Find the 70th percentile for the commute time of LA workers. minutesJA researcher takes an SRS of 80 people who go golfing.The average to be u52 years old. It was also determined that the standard deviation of cac ot golfers was la What is the probability that the sample mean is kss. than 47 years old? age of all golferswas determined years.
- The average amount of money spent for lunch per person in the college cafeteria is $5.99 and the standard deviation is $2.1. Suppose that 49 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal places where possible. For the group of 49 patrons, find the probability that the average lunch cost is between $5.77 and $6.08.Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs. The distribution of NFL weights is not normal. Suppose you took a random sample of 32 players. What is the probability that the sample average will be between 240 and 252 lbs? Round your answer to three decimal places, eg 0.192.Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs. The distribution of NFL weights is not normal. Suppose you took a random sample of 32 players. What is the probability that the sample average will be greater than 260 lbs? Round your answer to three decimal places, eg 0.192.
- The average score of all golfers for a particular course has a mean of 66 and a standard deviation of 4. Suppose 64 golfers played the course today. Find the probability that the average score of the 64 golfers exceeded 67. Round to four decimal places. O A. 0.0228 O B. 0.4772 O C. 0.1293 O D. 0.3707he mean height of an adult giraffe is 18 feet. Suppose that the distribution is normally distributed with standard deviation 0.8 feet. Let X be the height of a randomly selected adult giraffe. Round all answers to 4 decimal places where possible.b. What is the median giraffe height? ft.c. What is the Z-score for a giraffe that is 19 foot tall? d. What is the probability that a randomly selected giraffe will be shorter than 17.1 feet tall? e. What is the probability that a randomly selected giraffe will be between 17.3 and 17.9 feet tall? f. The 90th percentile for the height of giraffes is ft.The average production cost for major movies is 67 million dollars and the standard deviation is 19 million dollars. Assume the production cost distribution is normal. Suppose that 45 randomly selected major movies are researched. Answer the following questions. Give your answers in millions of dollars, not dollars. Round all answers to 4 decimal places where possible. For the group of 45 movies, find the probability that the average production cost is between 63 and 65 million dollars.
- The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 67 minutes and a standard deviation of 16 minutes. Suppose one person at the hot springs is randomly chosen. Let X = the amount of time that person spent at Grover Hot Springs . Round all answers to 4 decimal places where possible.b. Find the probability that a randomly selected person at the hot springs stays longer then 77 minutes. c. The park service is considering offering a discount for the 4% of their patrons who spend the least time at the hot springs. What is the longest amount of time a patron can spend at the hot springs and still receive the discount? minutes.d. Find the Inter Quartile Range (IQR) for time spent at the hot springs.Q1: (. ) minutesQ3: ( )minutesIQR:( )minutes PLEASE ANSWER ALL 3 SUBS B, C, AND DAssume that blood pressure readings are normally distributed with a mean of 124 and a standard deviation of 6.4. If 64 people are randomly selected, find the probability that their mean blood pressure will be less than 126. OA. 0.0062 B. 0.8615 C. 0.9938 OD. 0.8819The average production cost for major movies is 63 million dollars and the standard deviation is 20 million dollars. Assume the production cost distribution is normal. Suppose that 35 randomly selected major movies are researched. Answer the following questions. Give your answers in millions of dollars, not dollars. Round all answers to 4 decimal places where possible 1. For the group of 35 movies, find the probability that the average production cost is between 61 and 66 million dollars
