Bacteria in a culture live for an average time of three hours with a standard deviation of 15 minutes. If it wasn’t normally distributed, at least what fractionof the bacteria live between one and five hours?

Q: A research team is measuring the air quality of different parts of a city. The measurements show…

A: From the provided information, for the distribution of the carbon monoxide concentrations in parts…

Q: The length of human pregnancies from conception to birth approximates a normal distribution with a…

A: Let X be length of time marks the longest 2.16 % of all pregnancies from normal distribution with…

Q: Suppose a population is known to be normally distributed with a mean, equal to 116 and a standard…

A: Given dataMean = 116Standard deviation = 14Probability that population would be between 116 and 130…

Q: About what percent of the products last between 12 and 15 days?

A:

Q: A normally distributed population has a population mean ? = 21 and standard deviation ? = 4. What…

A: Given Information: Mean = 21 Standard Deviation = 4

Q: The mean life of pairs of shoes is 40 months with a standard deviation of 8 months If the life of…

A: The random variable X is the life of shoes It is normally distributed. The mean life of the pair of…

Q: A variable is normally distributed with mean 10 and standard deviation 3. Find the percentage of all…

A:

Q: A variable is normally distributed with mean 10 and standard deviation 3. Find the percentage of all…

A: Given  μ =10,σ=3 X~N(μ =10,σ2 =32)  We want to find the probability  P(73<X<80)= ?  Note: This…

Q: In a herd of longhern cattle the mean horn length is 52cm and h2 is 0.2. Predict the mean horn…

A: Heritability is a measure of additive effects of genes, it tells whether the observation variation…

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: The life span of a type of automatic washer is approximately normally distributed, with mean and…

A: It is given that the life span of a type of automatic washer is approximately normally distributed,…

Q: Suppose that a laboratory analyzes biological specimens to determine the concentration of toxins.…

A: Given:

Q: A normally distributed population has a population mean ? = 40 and standard deviation ? = 5. What…

A: It is an important part of statistics . It is widely used .

Q: What is the storm return associated with a flow of 17,562 cfs when the mean is 12,500 cfs and a…

A:

Q: According to a recent report, people smile an average of u=62 times per day. Assuming that the…

A: Let "X" be the average number of times that people smile in a day.

Q: Suppose that the life expectancy of a certain brand of nondefective light bulbs is normally​…

A: From the provided information,Mean (µ) = 1400Standard deviation (σ) = 100X~N (1400, 100)90,000 of…

Q: Assume that the amount of time a person experiences cold virus symptoms are normally distributed…

A: Given data Mean = 7.5 days  Standard deviation  = 1.5d days To find: What proportion of cold…

Q: Total plasma volume is important in determining the required plasma component in blood replacement…

A: Sample size Sample mean Population standard deviation

Q: The battery of cellphones tend to work less efficiently the longer you have your phone and…

A:

Q: particular fruit's weights are normally distributed, with a mean of 395 grams and a standard…

A: We have given that Mean=395

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 13.8…

A:

Q: a male polar on average weighs 525 kg the population of standard deviation is 58 kg suppose that the…

A: Given information- Population mean, µ = 525 kg Population standard deviation, σ = 58 kg Let X be the…

Q: In a population of exam scores, a score of X = 88 corresponds to z = 2 and a score of X = 79…

A: From the provided information, A score of X = 88 corresponds to z = 2 A score of X = 79 corresponds…

Q: Suppose a population is known to be normally distributed with a mean, equal to 116 and a standard…

A: The percentage of the population would be between 116 and 144 is obtained below:It is given that the…

Q: A particular fruit's weights are normally distributed, with a mean of 727 grams and a standard…

A: The mean is 727 and the standard deviation is 34 grams.

Q: the number of eggs female house flies lay during a lifetime is normally distributed what a mean of…

A: Given: Mean=800 Standard deviation, σ=100 Sample Size, n=15

Q: ticular fruits weight are normally distributed with a mean of 285 grams and a standard deviation of…

A: According to the sum, A particular fruit weight is normally distributed with a mean of 285 grams and…

Q: A normal distribution has a mean of 100 and a standard deviation of 2. If 69,146% of the data are…

A:

Q: The length of human pregnancies from conception to birth approximates a normal distribution with a…

A: From the provided information, Mean (µ) = 268 Standard deviation (σ) = 17

Q: The scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A: The test score is 0.6 standard deviations above the mean is obtained below: From the given…

Q: A population of scores has u=55 and o=15.  if 5 points are subtracted from every score in the…

A: The given data is μ = 55σ = 15 Suppose x1, x2, x3, x4, ..., xn are the data points…

Q: A population has a mean of 75 and a standard deviation of 15 you randomly sample nine people from…

A: Given population have mean 75 and standard deviation 15. A sample of 9 people from the population is…

Q: Suppose that the hemoglobin levels among healthy females are normally distributed with a mean of…

A: Let X, be the random variable of hemoglobin levels among healthy females (in gm/dL) is follows…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

A: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…