regional radio station recently conducted a survey amongst a large sample of bus commuters to find out how long they listen to the radio in the bus whilst travelling to work in the morning. This information was used to attract product sponsors to the programs. Assume that ‘listening

Q: Among the workers at a large factory, the number of sick days taken per year is normally…

A: Given that, Among the workers at a large factory, the number of sick days taken per year is normally…

Q: The diameter of a brand of tennis balls is approximately normally distributed with a mean of 2.45…

A:

Q: Furnace repair bills are normally distributed with a mean of 264 dollars and a standard deviation of…

A: Let X denote the cost of furnace repair bills. Given that X follows Normal(mean = 264, SD = 30)

Q: An electronic company in Laguna manufactures resistors that have a mean resistance of 120 ohms and a…

A: Given data,μ=120σ=13If n=40P(X>114)=?

Q: Automotive engineers have found that the gas mileage in highway driving of a certain sports utility…

A: Given data,Mean μ=13.6sd    σ=1.5If n=30P(X>14)=?

Q: At a local restaurant, the amount of time that customers have to wait for their food is normally…

A: The mean is 24 and the standard deviation is 3.

Q: A canning company that cans pineapple juice has a machine that automatically fills 16-ounce cans.…

A: Let X denote the amount of fill per can. Given that X follows N(mean = 16, SD = 1), then Z = (X -…

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A: Given information- Population mean, μ = 1.8 pounds Population standard deviation, σ = 1.02 pounds We…

Q: According to an NRF survey conducted by BIGresearch, the average family spends about $237 on…

A: (a)   Obtain the probability that they spend less than $135 on back-to-college electronics.   The…

Q: The engines made by Ford for speedboats had an average power of 220 horsepower (HP) and standard…

A: The formula for z-score is z=x-μσn

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A:

Q: A regional radio station recently conducted a survey amongst a large sample of bus commuters to find…

A: Define X as listening time is  normally distributed with a mean of 20 minutes and a standard…

Q: The weight of a bag of sugar is normally distributed with mean of 550g and a standard deviation of…

A:

Q: A recent study of teacher salaries in rural areas showed that the average salary was $30,000/year…

A:

Q: The amount of time that sales managers devote to their jobs per week is normally distributed with a…

A: Given: The mean amount of times that sales managers devote to their jobs per week is μ=55 hours. The…

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A: Given data,Mean μ=1.8standard deviation σ=1.02If n=55P(X<1.9)=?

Q: THE SICK-LEAVE TIME OF EMPLOYEES IN A FIRM IN A MONTH IS NORMALLY WITH A MEAN OF 100 HOURS AND A…

A:

Q: A canning company that cans pineapple juice has a machine that automatically fills 16-ounce cans.…

A: Given data,Mean(μ)=16sd (σ)=1P(X>16)=?

Q: A new brand of cell phone battery has a mean battery life of 54 hours with a standard deviation of…

A:

Q: The weights of the cereal in boxes of Kooky Krunch cereal are normally distributed, with a mean of…

A:

Q: At a customer service call center for a large company, the number of calls received per hour is…

A: Let X represent the random variable   Mean=140 SD=5   X~ Normal (140, 5^2)

Q: The medical records of infants delivered at the Kaiser Memorial hospital show that the…

A:

Q: In a health club, research shows that on average, patrons spend an average of 46.2 minutes on the…

A:

Q: The amount of time that sales managers devote to their jobs per week is normally distributed with a…

A: Given: μ=54σ=5n=30 a. The probability that randomly selected sales manager works for more than 55…

Q: An industrial sewing machine uses ball bearings that are targeted to have a diameter of 0.75 inch.…

A: Note:- 1) As per our policy, we can answer only three subparts of a question. Please make a new…

Q: A report stated that the average number of times a cat returns to its food bowl during the day is…

A: Given information- Population mean, μ = 36 Population standard deviation, σ = 5 Since variables are…

Q: According to an NRF survey conducted by BIGresearch, the average family spends about $237 on…

A: We have given that the random variable X is normally distributed with mean $237 and standard…

Q: According to the U.S. Department of Agriculture's World Livestock Situa- tion, the country with the…

A: We have given that,  Let X be the random variable from normal distribution with mean (μ) = 147,…

Q: An orange juice producer buys all his oranges from a large orange grove. The amount of juice…

A:

Q: At a customer service call center for a large company, the number of calls received per hour is…

A: Let X be number of calls received per hour. Given: μ=190,  and σ=20 We need to find the PX<163

Q: The psychomotor retardation scores of 1500 manic depressive patients were found to be normally…

A: From the provided information, Mean (µ) = 930 Standard deviation (σ) = 130 X~N (930, 130) Here X be…

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A:

Q: At a customer service call center for a large company, the number of calls received per hour is…

A:

Q: Based on tests of the Chevrolet Cobalt, the miles per gallon in highway driving are normally…

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: assume that cans of coke are filled so that the actual amounts have a mean of 12 oz and a standard…

A:

Q: The heights of 18-year-old men are approximately normally distributed with a mean of 68 inches and a…

A:

Q: Furnace repair bills are normally distributed with a mean of 267 dollars and a standard deviation of…

A: Let us denote: X=Furnace repair billsGiven that X follows a normal distribution with mean=267 and…

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A: Given that: X is normally Distributed with mean µ = 1.75 and standard deviation σ = 1.02 By using…

Q: The term​ "Freshman 15" refers to the claim that college students typically gain 15 lb during their…

A: Given that mean of2.4 lb and a standard deviation of10.8

Q: According to a study done by De Anza students, the height for Asian adult males is normally…

A: Given Data Population Mean,μ = 66.0 Population Standard Deviation,σ = 2.5

Q: The personal office at a large electronics firm regularly schedules job interviews and maintains…

A: Given: Population mean μ=34Population standard deviation σ=7 Sample size(n)  = 9 Consider X be the…

Q: What is the probability that an 18- to 24-year-old mobile subscriber spends less than 300 minutes…

A: From provided information, let X be variable that ACNielsen study indicates that mobile subscribers…

Q: A study indicates that 18- to 24- year olds spend a mean of 115 minutes watching video on their…

A:

Q: A recent survey of the NHL found that the number of goals scored in Hockey *BY A PLAYER* in an 82…

A: From the provided information, Mean (µ) = 42 Standard deviation (σ) = 8 Let X be a random variable…

Q: The weights of college football players are normally distributed with a mean of 191 pounds and a…

A: Given,   Mean = 191 Standard deviation = 49

Q: Furnace repair bills are normally distributed with a mean of 269 dollars and a standard deviation of…

A: Given: Population meanμ=269Sample size(n) =64Population standard deviationσ=20 Consider X be the…

Q: The ages of patients in a hospital were normally distributed with a mean of sixty-three years and a…

A:

Q: A regional radio station recently conducted a survey amongst a large sample of bus commuters to find…

A:

Q: In one region, the September energy consumption levels for single-family homes are found to be…

A: we have to use z table to solve.

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.