Suppose that the mean daily viewing time of television is 8.5  hours per household. Use a normal probability distribution with a standard deviation of 2.5 hours to answer the following questions about daily television viewing per household. a. What is the probability that a household views television between 6  and 9 hours a day (to 4 decimals)?   b. How many hours of television viewing must a household have in order to be in the top 4% of all television viewing households (to 2 decimals)? ____ hours c. What is the probability that a household views television more than 2 hours a day (to 4 decimals)?

Q: A study indicates that 18- to 24-year olds spend a mean of 145 minutes watching video on their…

A: given data normal distributionμ = 145 minutesσ = 20 minutes

Q: The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation…

A: (a)   Obtain the probability that pregnancy will last 307 days or longer. The probability that…

Q: The average income tax refund for the 2009 tax year was $2956. Assume the refund p person follows…

A: Mean =$2956Standard deviation =$971

Q: Suppose a brewery has a filling machine that fills​ 12-ounce bottles of beer. It is known that the…

A: Mean = 12.33 Standard deviation = 0.04

Q: The monthly incomes of an organization follows a normal probability distribution with a mean of…

A: From the provided information, Mean (µ) = $5,000 Standard deviation (σ) = $100 Let X be a random…

Q: Television viewing reached a new high when the global information and measurement company reported a…

A: Solution: a. Let X be the number of hours that a household views television. From the given…

Q: Exercise 1: The weight of a random scone sold by your favorite bakery has a mean of 105g I a…

A: Given: μ = 105 σ = 5 Formula Used: Z-score= X-μσn

Q: The mean monthly household electric bill in a certain community is $110. Assume the amounts are…

A: Suppose the random variable x defines the monthly household electric bill in a certain community.

Q: In a region the energy consumption for a family per month averages 1145 kWh and one 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: When parking a car in a downtown parking lot, drivers pay according to the number of hours or…

A: Standard deviations=σ=2.8532 k=3.25

Q: The average student loan debt for college graduates is $25,000. Suppose that that distribution is…

A:

Q: Suppose that the mean daily viewing time of television is 8.35 hours per household. Use a normal…

A: Mean()=8.35 hoursStandard deviation()=2.5 hours

Q: Suppose that the mean daily viewing time of television is 8.35 hours per household. Use a normal…

A: We have, The mean daily viewing time of television is 8.35 hours per household and a standard…

Q: The length of time it takes a college student to find a parking spot in the library parking lot…

A: Mean(μ)=7.0 standard deviation(σ)=1

Q: Television viewing reached a new high when the global information and measurement company reported a…

A: given data, normal distributionμ=8.35σ=2.5we have to find out the given probabilties.

Q: Assume that the cholesterol levels among teenagers are Normally distributed with u (mean)= 170 and…

A:

Q: uppose that the heights of female adults in the United States are normally distributed with a mean…

A: Solution-: Given: μ=65.4inches,σ=2.8inches We obtained the following: (a) P(X is between 66 and 70…

Q: A study indicates that 18- to 24- year olds spend a mean of 120 minutes watching video on their…

A: The mean is 120 minutes and the standard deviation is 20 minutes.

Q: A line waiting for tickets to an event has a normal distribution and the mean time is 23 minutes.…

A: Population mean, μ=23 Population sd, σ=4

Q: The number of homes sold by a realtor during a month has the following probability distribution:…

A: The expected value (mean) of a probability distribution is calculated by multiplying each possible…

Q: The percent of fat calories that a person in America consumes each day is normally distributed with…

A: Given Information: he percent of fat calories that a person in America consumes each day is normally…

Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: The WAIS is an IQ test. Scores on the WAIS for the 20-34 age group are normally distributed with a…

A: It is given that the mean and standard deviation for the age group of 60-64 is 90 and standard…

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.