Among the workers at a large factory, the number of sick days taken per year is normally distributed, with a mean of 5 with a standard deviation of 3. What is the probability that a worker at the factory, chosen at random, would be sick 7 or more days per year?

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 12 inches,…

A: Normal distribution is a continuous distribution that has many real-life applications. A normal…

Q: In the second quarter of 2015, the average movie ticket cost $8.61. In a random sample of 50 movie…

A:

Q: In 2002, the average height of a woman aged 20–74 years was 64 inches. Suppose the height of a woman…

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Q: A lawyer commutes daily from his suburban home to his midtown office. The average time for a one-way…

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Q: In examining the invoices issued by a company, an auditor finds that the dollar amounts of invoices…

A:

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

A: From the given information,   Mean  = 35 Standard deviation = 7.5   The objective is to find the…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.7 inches,…

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: A lawyer commutes daily from his suburban home to his midtown office. The average time for a one-way…

A: The binomial distribution discovered by James Bernoulli. If X is a discrete random variable with…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 12.6…

A: The provided information are:

Q: Suppose the grades in a mathematics class are Normally distributed with a mean of 75 and a standard…

A: Introduction :-  Here the grades in a mathematics class are Normally distributed with a mean of 75…

Q: A species of extra-terrestrial has a mean height of 23 cm and a standard deviation of 3.6 cm. What…

A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 14.6…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 10.6…

A: Obtain the Z-score for the random variable X equals 8.9. The Z-score for the random variable X…

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

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 18 inches,…

A: Let X be the random variable from normal distribution with mean (μ) = 18 inches and standard…

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

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 10.8…

A:

Q: In a study of work patterns, data from 669 subjects were collected. For the time spent in child…

A: We have given that,  Let X be the random variable from normal distribution with mean (μ) = 23.08,…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 13.5…

A: Let "X" be the length of the items.

Q: Suppose that during any hour in a large department store, the average number of shoppers is 448,…

A: Given:

Q: the life expectancy of 400 people in a certain geographic region, the mean age at death was 70…

A: Given, μ=70σ=5.1n=50

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

A: Let X denote the customer ages and it follows normally distribution with a mean of 37.5 and a…

Q: A local sports magazine reports the mean length of a baseball game to be 175.9 minutes with a…

A: Given, mean, μ= 175.9 minutes standard deviation,  = 27 minutes n = 30

Q: A population has a standard deviation of 16. If a sample of size 64 is selected from this…

A: Given: Population standard deviation = sigma = 16 n = 64 P( sample mean within 2 units from…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 18.8…

A: The probability that it is less than 18.8 inches long when one item chosen at random is obtained…

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

A:

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

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 19.4…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 13.9…

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: A manufacturer knows that their items have a normally distributed length, with a mean of 11.9…

A: Mean = 11.9 Standard deviation = 1.3

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 14.8…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 15 inches,…

A: Mean = 15 Standard deviation = 1

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

A: Note: Hi there! Thank you for posting the question. As there are several independent questions,…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 12.5…

A: given  A manufacturer knows that their items have a normally distributed length, with a mean of 12.5…

Q: A recent study of the hourly wages of maintenance crew members for major airlines showed that the…

A: Given: μ=20.50σ=3.50 a. The probability the crew member earns between $20.50 and $24.00 per hour is…

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

A: Given,mean(μ)=35standard deviation(σ)=7.5sample size(n)=50

Q: An electrical component is designed to provide a mean service life of 3000 hours, with a standard…

A: Given that: X is normal Distributed with mean µ = 3000.0 and standard deviation σ = 800.0 By using…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 12.6…

A: Mean = 12.6 Standard deviation = 1.9

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

A:

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

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.3 inches,…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 6.7 inches,…

A:

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

A:

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

A:

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)