Suppose that in a certain Senior High School the average height of male students is 155.9 cm with standard deviation of 20.4 cm.If you choose 40 students what is the probability that their height is above 155 cm?

Q: The average age of accountants is 53 years, with a standard deviation of 5 years. If an accounting…

A: We have to find probability..

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 14.2…

A: GivenMean(μ)=14.2standard deviation(σ)=2.2

Q: Suppose average study hours of students passing Statistics Lecture was 75 hours and standard…

A: Given that, Mean = 75 Standard deviation = 25

Q: An electrical company claims that the average life of the bulbs it manufactures is 1 300 hours with…

A: According to central limit theorem if the population is normal or the sample size is at least 30,…

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

A: The provided information are:

Q: The average weight of an NFL player is 245.7 pounds with a standard deviation of 34.5 pounds, but…

A: From the provided information, Mean (µ) = 245.7 Standard deviation (σ) = 34.5

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 manufacturer knows that their items have a lengths that are skewed right, with a mean of 6.1…

A: Given: Length of items = X X distribution is skewed towards right mean of X= 6.1 inches standard…

Q: The average age of all employees is 25 years, and the standard deviation of the ages of all…

A: Given,sample size(n)=100mean(μ)=25standard deviation(σ)=3

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 7.1 inches,…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 13.7…

A: Given: Calculate the corresponding z score as follows: Calculate the probability that their mean…

Q: Suppose the scores, on a college entrance examination are normally distributed with a mean of 1000…

A: We have given that Suppose the scores, on a college entrance examination are normally distributed…

Q: In 1999, the murder rates (per 100,000) for the 50 states and the District of Columbia had a mean of…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 14.5…

A:

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

A: Given Data: The mean of the distribution is: μ=75 The standard deviation of the distribution is: σ=5…

Q: Since a population has a mean of 73.5 and a standard deviation of 2.5, what is the probability that…

A: We have to find given probability.....

Q: Suppose the salaries of a company that pays to its employees are normally distributed with an…

A:

Q: A researcher wishes to estimate the average height of men for a certain region of the country. If…

A: Probability is the measure determine the likelihood of an event. Event is the outcome of an…

Q: according to the government data the probability that a woman between the age of 25 and 29 was never…

A: Given, Probability that a women between the ages of 25 and 29 was never marries is 40%. i.e. p =…

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: The height of the dogs in a pet shop is normally distributed with the average height of 25 cm and…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 7.2 inches,…

A: Given data,μ=7.2σ=1.3P(x<4.8)=?

Q: Suppose the salaries of a company that pays to its employees are normally distributed with an…

A: Given that the salaries of a company that pays to its employees are normally distributed with an…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 14.7…

A:

Q: Suppose the probability a patient will recover from a disease following medication is 0.7. In a…

A: Given : the probability a patient will recover from a disease following medication is 0.7.  In a…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 17.7…

A: consider the test statistics z=x-μσn where μ is the mean, σ is the standard deviation, n is the…

Q: Assume the average height for all American women is 64 inches with a standard deviation of 2 inches.…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 14.7…

A:

Q: The average age of accountants is 43 years, with a standard deviation of 5 years. If an accounting…

A: From the given information,   Mean = 43 Standard deviation = 5 Sample size = 30

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.2 inches,…

A: The distribution of length of items is N(µ=9.2 inches, σ=1.6 inches).

Q: Suppose the mean weight of school children's book bags is 17.5 pounds, with standard deviation 2.2…

A: Given problem Given that   The mean weight of school children's book bags = μ = 17.5 pounds…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 19.2…

A: Given that, Mean = 19.2 Standard deviation = 3

Q: Suppose that the height distribution of students in your class was normally distributed with mean 68…

A:

Q: Suppose the salaries of a company that pays to its employees are normally distributed with an…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 19.3…

A: Given information: A manufacturer knows that the length of its items are normally distributed…

Q: An airliner carries 350 passengers and has doors with a height of 72 in. Heights of men are normally…

A: From the given information, let X be the men passengers height. Number of men passengers n = 175.…

Q: Suppose the temperature during the month of June is normally distributed with mean 68 degrees…

A: Answer: - Suppose the temperature during the month of June is normally distributed with…

Q: For a certain type of computers, the length of time between charges of the battery is normally…

A: According to the provided information, Mean (µ) = 50 hour Standard deviation (σ) = 15 hour

Q: Suppose the scores, x, on a college entrance examination are normally distributed with a mean of…

A: Solution: Let X be the score on a college entrance examination. From the given information, X…

Q: Suppose the scores, X, on a college entrance examination are normally distributed with a mean of…

A:

Q: For healthy individuals, between 18 and 48, the mean heart rate is 60 beats per minute (bpm) with a…

A: Calculating the probability: The heart rates have a mean 60 and standard deviation 10. Let X denotes…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.6 inches,…

A: GivenMean(μ)=9.6standard deviation(σ)=2.8

Q: Suppose that the average number of hurricanes is 32 per year with a standard deviation of 2.8 and…

A:

Q: Some sources report that the weights of full-term newborn babies in a certain town have a mean of 9…

A: A normal distribution follows the bells shaped curve centred at mean of the distribution. The normal…

Q: Suppose that weights of one-pound bags of apples follow the normal distribution with the mean of 1…

A: Given Population mean μ=1, standard deviations σ=0.2,  Let X be the weight of one pound bags off…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 13.4…

A:

Q: Suppose it is known that the average score of all high school seniors taking a national test of…

A:

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

A: Let x¯ denotes the mean length of an manufacturer item which follows normal distribution. The mean…

Q: The average number of moves a person makes in his or her lifetime is 12. If the standard deviation…

A: Given,   Mean = 12 Standard deviation = 3.2 Sample size = 30