The life expectancy of a fluorescent tube is normally distributed with a mean of 6,050 hou and a standard deviation of 800 hours. Find the probability that a tube lasts for more than 6,850 hours. Use the Empirical Rule.

Q: The amount of snowfall falling in a certain mountain range is normally distributed with a mean of…

A:

Q: The Atlanta Braves baseball team has a mean batting average of 250 with a standard deviation of 20.…

A: Given that, mean (mu)= 250  And standard deviation, sigma= 20 We know that, Z Score is given by, Z…

Q: Assume that blood pressure readings are normally distributed with a mean of 122 and a standard…

A: Let "M" be the mean blood pressure readings.

Q: Suppose the mean amount of cholesterol in eggs labeled “large” is 186  milligrams, with standard…

A: Given that  μ = 186 , ? = 7 , n = 144

Q: The average height of a certain age group of people is 53 inches. The standard deviation is 4…

A: Let X be the random variable from normal distribution with mean or average (μ) = 53 and standard…

Q: The test scores are normally distributed with a mean of 78 and a standard deviation of 9. If 39…

A: Obtain the probability that the average score is between 80 and 84. The probability that the average…

Q: Assume that blood pressure readings are normally distributed with a mean of 123 and a population…

A: Solution: Let X be the blood pressure reading. From the given information, X follows normal…

Q: The heights of University players are normally distributed with a mean of 160 cm and a standard…

A:

Q: The average weight of oranges in a box was 74 g and the standard deviation was 12 g. Calculate the…

A:

Q: The lengths of pregnancies are normally distributed with a mean of 280 days and a standard deviation…

A: The lengths of pregnancies are normally distributed with a mean of 280 days and a standard deviation…

Q: The average expense of the dela cruz family is 12,600 every half month with a standard deviation of…

A: It is given that μ=12600 and σ=1570 Also x<11000 z=x-μσ=11000-126001570≈-1.02

Q: the amount of snowfall falling in a certain mountain range is normally distributed with a mean of 88…

A: It is given that the normal distribution has a mean, μ=88 and the standard deviation, σ=16. The…

Q: Assume that blood pressure readings are normally distributed with a mean of 117 and a standard…

A: From the provided information, Mean (µ) = 117 Standard deviation (σ) = 8.4 Sample size (n) = 37 Let…

Q: Based from the record, the mean weight of the newborn babies is 4.8 with a standard deviation of…

A: Given that  Mean=4.8 Standard deviation=0.75 Sample size=60

Q: The lengths of pregnancies of humans are normally distributed with a mean of 265 days and a standard…

A: Given mean(μ)=265standard deviation(σ)=15

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: Given data normally distributed with mean of 196 pounds and standard deviation of 22…

Q: A jar of peanut butter is normally distributed with a mean of 16 oz and a standard deviation of 0.02…

A: Given information- Population mean, µ = 16 oz Population standard deviation, σ = 0.02 oz Let, x be…

Q: The average height of a certain age group of people is 53 inches. The standard deviation is 4…

A: Solution-: Given: μ=53inches,σ=4inches We find, P(a selected individual's height will be greater…

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: assume that blood pressure readings are normally distributed with a mean of 135 and a standard…

A:

Q: Assume females have pulse rates that are normally distributed with a mean of 72 beats per minute and…

A: Given that: Mean = 72 beats S. D. = 12.5 beats Sample size (n)  = 25 By using standard normal…

Q: In a 15-day period, the amount of growth for a population of sunflower plants was found to be a…

A: Here it is given that the growth of sunflower is normally distributed with mean=3.18 and SD=0.52…

Q: An online food delivery service in metro manila has a mean delivery time of 30 minutes with a…

A: Let X denote the delivery time. Given that X follows N(mean = 30, SD = 5), then Z = (X - mean)/SD…

Q: A factory produces bars of chocolate that follow a Normal Distribution with a mean weight of 60g and…

A: 5) The mean is 60 and the standard deviation is 2.

Q: A lightbulb is advertised as lasting 1000 hours with a standard deviation of 150 hours. Assume the…

A: It is given that the mean and standard deviation are 1,000 and 150, respectively.

Q: A 12 oz can of soda has a mean volume of 12oz, with a standard deviation of 0.25 oz. How common are…

A:

Q: The weekly salaries of a group of employees are normally distributed with a mean of $800 and a…

A:

Q: Assume that IQ are normally distributed with a mean of 100 and standard deviation of 20. For a…

A:

Q: The lengths of pregnancies of humans are normally distributed with a mean of 238 days and a standard…

A: Obtain the standard z-score for the random variable X equals 220. The standard z-score for the…

Q: The average price of a kilogram of ham is 1,300. Assume that the standard deviation is 150. If a…

A: given  average =μ= 1300 standard deviation=σ= 150 random sample= n = 30

Q: The life of a vacuum cleaner is normally disyributed with mean 5 years and standard deviation 2…

A:

Q: The diameter of the dot produced by a printer is normally distributed with a mean diameter of…

A: We have given that.   X~N( μ , ?^2 )   μ =0.032 , ? =0.002   Z-score =( x - μ )/?

Q: On average, weight of carry-on baggage of passengers on planes is 36.7 pounds. Assuming a standard…

A:

Q: The lengths of human pregnancies are approximately normally distributed with a mean of 268 days and…

A: Let X is the random variable representing lengths of human pregnancies. X~Normalμ=268,σ=16

Q: The average raintall, recorded to the nearest hundredth of a centimeter, in New York City, for the…

A: (1) Let X be the random variable from normal distribution with mean (μ) = 9.22 and standard…

Q: The sick-leave time of employees in a firm in a month is normally with a f 100 hours and a standard…

A: Given  Mean (mu) = 100 hours Standard deviation = s= 20 hours

Q: The heights of 1800 adults are normally distributed with a mean of 70 inches and a standard…

A: 1. a) Empirical rule: The probability of the observation lies within 1 standard deviation of the…

Q: The length of time it takes to find a parking space is normally distributed with a mean of eight…

A: Solution: Let X be the length of time it takes to find a parking space. From the given information,…

Q: The average price of a kilogram of ham is P1,300. Assume that the standard deviation is P150. If a…

A:

Q: If we know that the length of time it takes a college student to find a parking spot in the library…

A: It is given that the mean length of time taken by a college student to find a parking spot was 3.5…

Q: The length of human pregnancies are normally distributed with a mean of 267 days and a standard…

A: Let "X" be the length of human pregnancies.

Q: The mean height of Grade III pupils is 138 cm with a standard deviation of 8 cm. If a sample of 30…

A: We have given that,  X be the random variable from normal distribution with mean = 138, standard…

Q: The mean time required to assemble a bicycle is 20.5 minutes and the standard deviation is 2.3…

A: The standard normal variate is calculated using the sample mean, population mean and population…

Q: The random variable X is normally distributed with a mean of 80 and a standard deviation of 10,…

A: X is normally distributed with mean 80 and standard deviation 10, The P85≤X≤90 is obtained as below…

Q: Oranges chosen at random have a mean mass of 210 grams and standard deviation of 35 grams. Assuming…

A: We have to find  probability  for given data

Q: Assume that blood pressure readings are normally distributed with a mean of 122 and a standard…

A: Assume that blood pressure readings are normally distributed.

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 270 days…

A: Z score: The number of standard deviations the original measurement x is from the value of mean µ is…

Q: The monthly demand for a product is normally distributed, with a mean of 700 units and a standard…

A: Given: Mean μ=700 Standard deviation σ=200 Let X be the random variable. The formula for z-score is:…

Q: The lengths of human pregnancies are normally distributed with a mean of 268 days and astandard…

A: Consider,X be a random variable that represents the lengths of human pregnancy which is normally…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.