the average time spent on a watching television in a state in the USA is 140 minutes the standard deviation of 30 minutes. what is the probability that a randomly selected person watches tv between 110 and 120 minutes? Find 85 percentiles of time spent watching tv? what is the probability that a sample of 100 residents has a mean watching time greater than 142 minutes?

Q: According to a survey, the average height of NBA players is 78 in. with a standard deviation of 7…

A: We have given that,  X is random variable are normally distributed with average or mean (mu) = 78…

Q: The time needed to complete a final examination in a particular college course is…

A: Given: Population mean (µ) = 80 Population standard deviation (σ) = 10 Consider, X be the random…

Q: The annual per capita consumption of bottled water was 33.3 gallons. Assume that the per capita…

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: The lifetime of lightbulbs has a mean of 1500 hours and a standard deviation of 100 hours. A sample…

A: Let the random variable X denote the lifetime of light bulbs. It is given that X has a mean of 1500…

Q: The number of plants pollinated by bees follows a normal distribution with a mean of 6,543 plants…

A:

Q: Mean = 71kg, standard deviation = 13kg. if 46 adults are randomly selected, what is the probability…

A:

Q: On average, the printer uses 500 sheets of paper each day with a standard deviation of 10 sheets.…

A: Given mean= 500 and standard deviation= 10 Let, X= number of sheets used by the printer  X follows…

Q: The sizes of car loans in North Carolina have mean $8,452 and a standard deviation $467. The…

A: The mean is 8452 and the standard deviation is 467.

Q: Tiger Woods hits an average driver 287.2 yards with a standard deviation of 24.6 yards. What is the…

A: The probability value is calculate by means of standard normal variate with the random variable,…

Q: The number of crackers in a box of Crackerbox Crackers is normally distributed with a mean of 75 and…

A: The provided information is  µ=75 σ=2 P(X>76) P(X>76)=P(X-µσ>76-752)=P(z>0.5)=0.3085The…

Q: According to the Department of Education, the time college students spend on their cell phones daily…

A: Given that, mean, mu=270 Standard deviation, sigma= 75 We know that, Z score=(X-mu)/sigma

Q: According to the USDA, the mean intake of calories of males 20-39 is 2716 with a standard deviation…

A: It is given that the mean and standard deviation are 2,716 and 72.8, respectively. The sample size n…

Q: The mean height of male college students in a large city is 68 inches and the standard deviation is…

A: Solution

Q: The mean annual cost of automobile insurance is $939. Assume that the standard deviation is a =…

A: GivenMean(μ)=939standard deviation(σ)=245sample size(n)=50

Q: The time college students spend on the internet follows a normail distrubution. At Johnson…

A:

Q: What is the probability that the port handles between 3 million and 4 million tons of cargo per…

A: The port of South Louisiana, located along 54 miles of the Mississippi River between New Orleans and…

Q: According to the Bureau of Labor Statistics, the average number of weeks an individual is unemployed…

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: (5) Based on the mean and standard deviation, which of the scores are extremely high or extremely…

A: The z-score of the given data values tells how far raw data is from the mean in terms of the…

Q: What is the probability of a male foot length between 10 and 12.5 inches? (Use the same mean of 11…

A: According to the Bartleby guideline only three sub steps of one question can be solved at one time,…

Q: A certain car model has a mean gas mileage of 34 miles per gallon with a standard deviation 5 mpg. A…

A:

Q: The length of time it takes to groom a dog at Shaggy's Pet Shoppe is normally distributed a mean of…

A: The provided information is  µ=45 σ=10 1.P(X>60)=P(X-µσ>60-4510)=P(z>1.5)=0.0.0668The…

Q: What is the standard deviation of the number of burglarized houses? What is the probability that…

A: Given : The probability that a house in an unban area will be burglarized is 5% . A sample of 50…

Q: statewide, social workers average 10.2 years of experience. In a random sample, 203 social workers…

A: State the hypotheses.

Q: A 120-watt fluorescent light has an average brightness of 1986 lumens, with a standard deviation of…

A:

Q: A large corporation pays its employees an average of $64,000 per year with a standard deviation of…

A:

Q: . In order for an engineering graduate to enroll in a master’s program, the graduate studies…

A: GivenMean(μ)=420standard deviation(σ)=100

Q: The Real Estate Group NY reports that the mean monthly rent for a one-bedroom apartment without a…

A: Given : Mean (μ) = 2635      (in $)Standard deviation = 499      (in $)Sample size (n) = 98

Q: The contents of soft drink bottles are normally distributed with a mean of 12 ounces and a standard…

A: If the random variable follows normal distribution with population mean and the population standard…

Q: In the United States, men’s heights have mean of 69 inches, and standard deviation of 3 inches.…

A: Let X be the height of men in United States. X follows normal distribution that has mean µ = 69 and…

Q: The driving distance to work for residents of a community is has a mean of 21 miles and a standard…

A: The objective here is to find the probability that individual drives between 10 and 20 miles to…

Q: The sizes of houses in Kenton County are normally distributed with a mean of 1369 square feet with a…

A: From the given information, the mean and standard deviation are 1,369 and 171.

Q: The mean number of hours that American women who worked outside of the home per week was 34.6 hours…

A: The mean is 34.6 and standard deviation is 13.6. The sample size is 42. The probability their mean…

Q: The mean salary offered to students who are graduating from Coastal State University this year is…

A: Given that the mean = $24,230                         standard deviation = $3712…

Q: The port of South Louisiana, located along 54 miles of the Mississippi River between New Orleans and…

A: GivenMean(μ)=4.5standard deviation(σ)=0.82

Q: A quality assurance officer ensures that their soft drink product adheres to the stated quantity of…

A: Given,sample size(n)=40mean(μ)=351.2 standard deviation(σ)=5.9

Q: A biology class with 114 students recently had an exam. The mean exam score was 82 and the standard…

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: The average per capita spending on health care in the USA is 5274 USD. If the standard deviation is…

A: Given,mean(μ)=5274standard deviation(σ)=600

Q: A manager of a popular retail store knows that the distribution of purchase amounts by its customers…

A: GivenMean(μ)=28standard deviation(σ)=9

Q: According to Runzheimer International, a typical business traveler spends an average of $281 per day…

A:

Q: The average age of a vehicle registered in the United States is 96 months. Assume the standard…

A: Let X be the random variable from normal distribution with average or mean (μ) = 96 months, standard…

Q: The annual per capita consumption of bottled water was 33.3 gallons. Assume that the per capita…

A: Given information- Population mean, µ = 33.3 gallons Population standard deviation, σ = 12 gallons…

Q: There is an 85% chance that a randomly selected person will take their own re-usable bags to the…

A:

Q: A manufacturing plant has 500 employees with average age as 35 years with standard deviation of 9…

A: We have to find out given probabiity..

Q: The amount of money that college students spend on food each week during the academic year is…

A: Given,mean(μ)=31.28standard deviation(σ)=11.42sample size(n)=10

Q: The mean monthly rent for a one-bedroom apartment without a doorman in Manhattan is $ 2,650 . Assume…

A: Given,Meanμ=2650Standard Deviation(σ)=500Sample Size(n)=100

Q: Most graduate schools of business require applicants for admission to take the Graduate Management…

A: Given:  mean =527 standard deviation = 112 Let the scores of GMAT be X Scores on the GMAT are…

Q: The average number of pages in a novel is 326 with a standard deviation of 24 pages. If a sample of…

A:

Q: The fracture strength of tempered glass averages 14 (measured in thousands of pounds per square…

A: a) The mean is 14 and standard deviation is 2. The probability that a randomly selected piece of…

Q: The height of women in the United States is normally distributed with a mean of 165 cm and standard…

A: The normal distribution has curve with bell shape and it is symmetric about the mean. The normal…

Q: A racing car consumes a mean of 106106 gallons of gas per race with a standard deviation of 66…

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.