Suppose the average age at death of a California Adventist is 85.5 with a standard deviation of 5.6 years, what is the probability that one randomly sampled at death lived less than 75 years? Select one: a. 0.4699 b. 0.0301 c. 0.9699 d. 0.5301

Q: Find the probability that a randomly selected high school student who took the reading portion of…

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

A:

Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57…

A: Given that, mean, mu= 57 Standard deviation, sigma= 3.5 We know that, Z score=(X-mu)/sigma Here…

Q: During a recent week the mean price of regular gasoline in Houston was $2.15 with a standard…

A: Given information- Population mean, μ = $2.15 Sample size, n = 36 Population standard deviation, σ =…

Q: For a population With a mean of 75 and a standard deviation of 12, what is the probability that a…

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Q: n a recent year, the ACT scores for high school students with a 3.50 to 4.00 grade point average…

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Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 31…

A: P(X>30)=1-Pz<30-311045=1-P(z<-0.67)=1-0.2514=0.7486

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: Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation of…

A: Given information Mean Diameter(µ) = 202 inches Standard deviation(σ) = 1.3 No of samples (n) = 70

Q: he height of the candidate for Police Officer at JayBie Town is normally distributed with a ean 165…

A: Let X be the random variable from normal distribution with mean (μ) = 165 cm and standard deviation…

Q: In a recent study, the Centers for Disease Control and Prevention reported that the diastolic blood…

A: Given that, Mean, mu= 80.5 And standard deviation, sigma= 9.9 X~ N(80.5, 9.9) We know that, z score…

Q: mean of µ = 70 and a standard deviation of σ = 10, what is the probability of obtaining a sample…

A: Given data: A normally distributed population with mean and standard deviation is given as:…

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

A:

Q: In​ 2008, the per capita consumption of soft drinks in Country A was reported to be 19.11 gallons.…

A: GivenMean(μ)=19.11standard deviation(σ)=5

Q: The reading speed of second grade students is approximately normal, with a mean 83 WPM and a…

A: Given,   Mean = 83 Standard deviation = 11

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 28…

A: P(X<30)=Pz<30-28540=P(z<2.53)=0.9943

Q: Assume that the heights of adult puffins are normally distributed, with a mean of μ=μ= 15.9 inches…

A: Obtain the probability of obtaining a sample mean height less than 14.8 inches. The probability of…

Q: Suppose that the annual household income in a small Midwestern community is normally distributed…

A: Given : X ~ Nμ, σ mean, μ = $55000 S.D, σ = 4500 a. P(household will have an income between $50000…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.8…

A: The mean is 11.8 and the standard deviation is 2.

Q: In a recent survey of high school students, it was found that the average amount of money spent on…

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Q: Suppose that the lifetimes of light bulbs are approximately normally​ distributed, with a mean of 56…

A: From the provided information, Mean (µ) = 56 Standard deviation (σ) = 3.2 Let X be a random variable…

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

A: Here, mean is $100 and standard deviation is $14.

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

A:

Q: Fraveling between two campuses of a university in a city via shuttle bus takes, on average, 28…

A: We want to find the probability  P(xbar>30)

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

A: (a) Let x be the monthly utility bills in a city which follows normal distribution with mean 100,…

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

A: X follows a Normal distribution with mean = 100 and S.D = 13 Then z=(x-mean)/SD = (x-100)/13…

Q: On the distant planet Cowabunga, the weights of cows have a normal distribution with a mean of 605…

A:

Q: Given the amount of annual snowfall in Big Bear City is normally distributed with μ=62 inches, and a…

A: Here the amount of annual snowfall is normally distributed with mean=62 and standard deviation=10. A…

Q: Suppose that family incomes ina town are normally distributed with a mean of $1,200 and a standard…

A: Mean = 1200 Standard deviation = 600

Q: A professor at a university gives her large class an examination and finds that the scores follow…

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Q: For a population with a mean of 100 and standard deviation of 16, what is the probability that a…

A: The central limit theorem states if the sample size (n) is large (greater than or equal to 30), then…

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

A:

Q: a) What is the probability a randomly selected student will read more than 88 WPM?  b)What is the…

A: Answer: Given that the reading speed of second grade students is approximately normal mean = μ = 83…

Q: Suppose your customers' incomes are normally distributed with a mean of $37,500 with a standard…

A:

Q: On the distant planet Cowabunga , the weights of cows have a normal distribution with a mean of 526…

A:

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

A:

Q: Which most closely reflects the probability that a randomly selected bulb would last fewer than 940…

A: Let X denote the life of bulb. Given that X follows N(mean = 1000, SD = 50), then Z = (X - mean)/SD…

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

A: Given information Mean µ = 6543 plants Standard Deviation σ = 35 plants

Q: items have a normally distributed lifespan, with a mean of 14.9 years, and standard deviation of 0.8…

A:

Q: Suppose a batch of metal shafts produced in a manufacturing company have a standara deviation of 1…

A: From the provided information, Mean (µ) = 201 inches Standard deviation (σ) = 1 X~N (201, 1)

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

A: Given : mean = 100 Standard deviation = 13

Q: Suppose the weights of seventh-graders at a certain school vary according to a Normal distribution,…

A: Given information Sample mean x̅ = 98 Population mean µ = 100 Sample size = 35 Standard deviation =…

Q: In a particular country, the height measurements of ten-year-old children are approximately normally…

A:

Q: Suppose that the lifetimes of light bulbs are approximately normally​ distributed, with a mean of 57…

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

Q: The number of cars crossing the Pigeon River border crossing each day is known to be normally…

A: GivenMean(μ)=2500standard deviation(σ)=600

Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57…

A: Given, The proportion of light bulbs will last more than 60 hours is obtained as- The required…

Q: are normally​ distributed, with a mean of $100 and a standard deviation of ​$13. Find the…

A: Given: μ=100, σ=13 The corresponding z-values needed to be computed are: The probability that a…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A: Given dataMean = 35Standard deviation = 7.5Sample size (n) = 40probability that the sample mean will…