30. The speeds (in mph) of motor vehicles on a certain stretch of Route 3A as clocked at a certain place along the highway are normally distributed with a mean of 64.2 mph and a standard deviation of 8.44 mph. What is the probability that a motor vehicle selected at random is traveling at... (A) More than 65 mph? (B) Less than 60 mph? o3 Xe 00/9 OH 007 (C) Between 65 and 70 mph?

Q: 3. For a certain type of computers, the length of time bewteen charges of the battery is normally…

A: Given that mu = 50 ,s.d =15 p ( 50 <x<70 ) = ?

Q: 3- According to nerdwallet.com, the average household mortgage debt was $156,333 in August 2015.…

A: Since we have a random sample of size 144 i.e. n=144 >30. So,  by Central Limit theorem (CLT),…

Q: 3. A soft drink vending machine dispenses soda into 12-ounce cups. Tests show that the actual amount…

A:

Q: 13. Assuming weights of female athletes are normally distributed with a mean of 140 Ibs and a…

A: Given: μ=140, σ=15 The corresponding z-value needed to be computed is:

Q: 21. According to the local union president, the mean gross incomé óf plumbers in the Salt Lake City…

A: The following information has been provided: Hypothesized Population Mean (μ)(\mu) = Mean gross…

Q: 2. A radar unit is used to measure speeds of cars on a motorway. The speeds are normally distributed…

A: Let X be the radar unit  X~N(mean μ=90, standard deviations σ=10) P(X>100)=?  Note: this…

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A:

Q: ii. The mean number of miles driven per vehicle annually in the United States is 12,494 miles.…

A:

Q: 2. The width of white board markers manufactured by a company is approximately normally distributed…

A: 2 a. Obtain the sampling distribution of the sample mean. The sampling distribution of the sample…

Q: Among all monthly bills from a certain credit card company, the mean amount billed was $485 and the…

A: Solution: a. Let X be the amount billed from a certain credit card company. From the given…

Q: The number of shots on goal in an amateur hockey league's games is normally distributed, with a mean…

A: Let us assume X= The number of shots on goal in an amateur hockey league's games Given that X…

Q: 2. The amount of time spent by North American adults watching television per day is normally…

A: Given data The amount of time spent by North American adults watching television per day is normally…

Q: 1. The waiting time at the doctor's office has a normal distribution with a mean of 35 minutes and…

A: Given: μ=35 minutesσ=2.6 minutes

Q: The salaries of employees of a certain company in Baguio City have a mean of P6,500 and a standard…

A:

Q: III. The height of the PBA players mean of 193 cm with standard deviation of 7. If 30 of them are…

A: Given,sample size(n)=30mean(μ)=193standard deviation(σ)=7

Q: 4. The monthly utility bills in a city are normally distributed with a mean of $100 and a standard…

A: It is given that the mean is 100 and standard deviation is 12.

Q: (c) A manufacturer ABC produces tires. The mean distance to wear out of these tires is 108,000 km,…

A: GivenMean(μ)=108000standard deviation(σ)=15000margin of error(E)=0.05confidence…

Q: The shape of the distribution of the time required to get an oil change at a 15 minute oil change…

A: Here we have μ = 16.2 min and Std (s) = 3.7min

Q: 1-The length of time a domestic flight must wait between gate departure and rakeoff taxi at Boston's…

A: (a) Obtain the probability that a plane must wait between 18 and 24 minutes before taxiing for…

Q: 1. The weights of deer in a national park are normally distributed with a mean of 65 kilograms and a…

A: Given that, the weights of deer in a national park are normally distributed with a mean of 65…

Q: 5. The average salary of bank managers in a certain city is $91,900 pesos per hour with a standard…

A: Let X be the random variable from normal distribution with average or mean (μ) = $91900 and standard…

Q: 9) For a certain type of computer, the length of time between charges of the battery is normally…

A:

Q: 1. Many automobile insurance companies charge premiums for auto coverage de- pending on the number…

A:

Q: An expert witness for a paternity lawsuit testifies that the length of a pregnancy is normally…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: 2. The average age of a car registered in the Land Transportation Office (LTO) is 10 years, or 120…

A: Solution: Given information: n= 35 Sample size  μ= 120 months Population mean σ= 20 months…

Q: 4) The police response to emergency calls x, is normally distributed with mean of 10 minutes and a…

A: From the provided information, Population mean (µ) = 10 Population standard deviation (σ) = 2 Let X…

Q: 3. The lifetimes of the light bulbs produced by Filip Company are normally distributed with a mean…

A:

Q: 25. The manager of the Portland Electronics store is concerned that his suppliers have been giving…

A: Note: According to Bartleby expert guidelines, we can answer only first question with their three…

Q: 1. The average amount of calories from a hamburger served in a restaurant in 220 per order with a…

A: Given that: X is normally Distributed with mean µ = 220.0 and standard deviation σ = 30.0 By using…

Q: 4. The weights of male basketball players on a certain collegiate basketball league are normally…

A: Note- Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: 2. Assume that SAT scores are normally distributed with mean µ = 1060 and standard deviation o =…

A:

Q: Suppose that the distribution of typing speed in words per minute (wpm) for experienced typists…

A: Given information: μ=64, σ=16 a)  x = 64 By applying normal distribution:- z=x-μσ=64-6416=0 z = 0.0…

Q: 4. The heights of adult males in Iceland are normally distributed with mean 181.7 cm and standard…

A: Let X be the height of adult males in Iceland.  It is given that height of adult males follows…

Q: (A)Find the probability that the disposable income of a resident is more than $45,000. Is this an…

A: Let X denote the per capita disposable income. Given that X follows N(mean = 44000, SD = 2450), then…

Q: Assume the number of physical damage losses for houses as a result of hurricane Irma in Barbuda is…

A:

Q: If a male passenger is randomly selected, find the probability that he can fit through the doorway…

A: Given,Mean μ=69.5Standard deviation σ=2.4a)P(x<72)=Px-μσ<72-μσ   =PZ<72-69.52.4…

Q: 1. The University of North Carolina Chapel Hill received over 42,000 application for undergraduate…

A: Note: Hey there! Thank you for the question. As you have posted multiple sub-parts, we have helped…

Q: (a) Based on a recent study, the monthly utility bills for three-room flats in Singapore can be…

A: GivenMonthly utility bills for three room flats in Singapore are normally distributedMean =…

Q: The number of shots on goal in an amateur hockey league's games is normally distributed, with a mean…

A: Let X=the number of shots X follows a normal distribution with mean=56.3 and standard deviation= 8.1…

Q: The average fuel efficiency of U.S. light vehicles (cars, SUVs, minivans, vans, and light trucks)…

A:

Q: 4. The monthly utility bills in a city are normally distributed with a mean of $100 and a standard…

A: (4) Obtain the standard z-score for the random variable X equals 90. The standard z-score for the…

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A:

Q: A gasoline tank for a certain car is designed to hold 15 gallons of gas. Suppose that the variable ?…

A: It is given that the actual capacity of a tank follows normal distribution with mean 15.0 gallons…

Q: The average fuel eficiency of U.S. light vehicles (cars, SUVS, minivans, vans, and light trucks) for…

A: X~N( μ = 21 , ? = 2.8 ) μ = 21 , ? = 2.8 Formula for Z-score  Z-score =( x - μ )/? Required  A)…

Q: What is the mean of the sampling distribution of  ?̂  ? ??̂  = What is the standard deviation of the…

A: Given  The wheel is constructed so that the probability that a player wins a small prize, ? , is…

Q: 1.The heights of 18 year-old men are approximately normally distributed, with mean 66 inches and…

A: As due to the honor-code, we are authorized to answer only one question and that you haven't…

Q: 3. The heights of the students in a certain school are normally distributed with an average height…

A: Hi there! Thanks for posting the question, since there are three different questions we will solve…

Q: 1-The length of time a domestic flight must wait between gate departure and takeoff taxi at Boston's…

A: Solution: 1. Let X be the length of time a domestic flight must wait between gate departure and…

Q: 1. Shinwa Company claims that the life of their battery product is approximately normally…

A: Note: According to our guidelines we can answer only first question and rest can be reposted. Thank…