A factory manufactured PVC pipes with a mean diameter of 3.4 cm, a standard deviation of 1.7 cm and is normally distributed. If 72 of PVC pipes are randomly selected, what is the probability that the sample mean diameter of the pipes is less than 3.0 cm?

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Q: A Texas Instrument calculator operating life is normally distributed with a mean of 3,850 hours, and…

A: Given information- Population mean, μ = 3850 hours Population standard deviation, σ = 350 hours…

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A: Given data,μ=69.7σ=3P(68<X<70)=?

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Q: The heights of water spinaches, Ipomoea aquatica in Malaysia without fertilizer application are…

A: PX>35=1-Pz<35-205=1-Pz<3=1-0.9987=0.0013

Q: (a) A factory manufactured PVC pipes with a mean diameter of 3.4 cm, a standard deviation of 1.7 cm…

A:

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: Assuming weights of female athletes are normally distributed with a mean of 140 lbs and a standard…

A: Let, X: The weights of female athletes. Given: Mean = μ = 140 lbs Standard deviation = σ =15 lbs We…

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 student finds that the average price of a movie ticket in Washington is $12.25 and that the…

A: From the provided information, Mean (µ) = $12.25 Standard deviation (σ) = $2 Let X be a random…

Q: A small aircraft carries 20 passengers and has doors with a height of 72 in. Heights of men are…

A:

Q: Assume that the foot length of adult males is normally distributed with mean 11 inches and standard…

A: Answer - Given X   ~  N( μ, σ )                 Where   μ =11 inches     and   σ  = 1.5 inches…

Q: The average length of actual running time (excluding advertisements) for television feature films is…

A:

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

A: P(X>155)=1-Pz<155-12538=1-Pz<0.79=1-0.7852=0.2148

Q: A census of the labor force in a large metropolitan area found that the time is takes for people to…

A:

Q: If a certain machine makes electrical resistors having a mean resistance of 40 ohms and a standard…

A: Given information- Population mean, µ = 40 ohms Population standard deviation, σ = 2 ohms Sample…

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

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Q: Suppose that the miles-per-gallon (mpg) rating of passenger cars is a normally distributed random…

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Q: A small retail store has customers whose ages are normally distributed, with a mean of 37.5 and a…

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A: Let X denote the blood sugar level readings. Given that X follows N(mean = 99, SD = 12), then  Z =…

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Q: The average public elementary school has 468 students with a standard deviation of 87. If a random…

A: Given: Mean=μ=468 Standard deviation=σ=87

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

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

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

Q: An experiment investigated whether the stem diameters of a tulip would change depending on whether…

A: Hello, thankyou for the question. According to our honor code we can answer only three sub parts at…

Q: In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with…

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

A:

Q: In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with…

A: Given data,Mean μ=69.7sd σ=3P(X>70)=?

Q: A company manufactures rice in 10 kg bags with a standard deviation of 1.25 kg per bag. What is the…

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

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Q: In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with…

A:

Q: In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with…

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: If the weights of sheep are considered normally distributed with a mean of 60 kg and a standard…

A: let  x is defined as the weights of sheep are considered normally distributed with a mean of 60 kg…

Q: A census of the labor force in a large metropolitan area found that the time it takes for people to…

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Q: If the average person adds 27 pounds of glass to recycle per year, with a standard deviation of 3,…

A: Mean (µ) = 27 Standard Deviation (σ) = 3 Sample size (n) = 20 Probability that the sample mean…

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: A courier services company has found that the delivery time for packages is normally distributed,…

A: Given : μ = 14 σ = 2 P(12≤X≤15) = P(X≤15) - P(X≤12)  P(12≤X≤15) = PX-μσ≤15-μσ - PX-μσ≤12-μσ…

Q: For a normally distributed random variable with mean 44 and standard deviation 16, find the…

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Q: The diameter of a brand of tennis balls is approximately normally distributed with a mean of 2.5…

A: Given that, Mean = 2.5 Standard deviation = 0.5 Sample size = 50

Q: At a certain beer bottling plant, the amount of beer that is put in a bottle is known to be…

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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: A book publisher claims that its mean book length is 250 pages with a standard deviation of 70…

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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: The weights of ice cream cartons are normally distributed with a mean weight of 10 ounces and a…

A: P(X>10.16)=1-Pz<x-μσ=1-Pz<10.16-100.6=1-P(z<0.27)=1-0.6064=0.3936 Therefore the…

Q: According to a report from a business intelligence​ company, smartphone owners are using an average…

A: Given that   μ = 22σ= 7n =144we need to calculateP (21.5 < X < 22.5)

Q: An audit finds that the dollar amounts of invoices have a mean of $1,662 anda standard deviation of…

A: Note : Since you have asked multiple questions, we will solve the first question for you. If you…