Based on this histogram, estimate the standard deviation of the sample of so prison terms. Carry your intermediate computations to at least four decimal places, and round your answer to at least one decimal place. (If necessary, consult a list of formulas.) ?

Q: A livestock company reports that the mean weight of a group of young steers is 1156 pounds with a…

A: The use of standard normal probability distribution tables help us in ascertaining percentage of…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 5.8…

A: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 5.8…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 4 years,…

A: Refer Standard normal table/Z-table, Lookup for z-score corresponding to area 0.10 to the left of…

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

A: The z-value is obtained Excel function “=NORMSINV(Probability)”. Output obtained from Excel is given…

Q: A livestock company reports that the mean weight of a group of young steers is 1135 pounds with a…

A: We have to find given probability.

Q: a) How large of a Sample is needed to estimate the population mean for the amount of money a person…

A: a)E=2Z-value at 95% confidence is Zc=1.96σ=7.50n=?n=(Zc*σE)2 =(1.96*7.52)2 n=54

Q: The Mean height of the students of a certain college is 66" with a Standard deviation of 3 inches.…

A: Given that  μ = 66 , ? = 3 , n=2000 1 feet = 12 inches  5 feet = 60 inches

Q: Books in the library are found to have average length of 350 pages with standard deviation of 100…

A: Given: μ=350σ=100x=80

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

A: GivenMean(μ)=14.8standard deviation(σ)=1.6

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

A: # X be the  length of time it takes a college student to find a parking spot in the library parking…

Q: Suppose a Nevada Highway Patrol officer takes 50 measurements on the speed of cars on the 15 as they…

A: Given: 50 measurement on the speed of cars.

Q: Scores on a certain standarized test have a mean of 500, and a standard deviation of 50. How common…

A: Given, Mean = μ =500SD = σ = 50

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 10.3…

A: Let X = Lifetime X~N(μ,σ) μ=10.3σ=2.2

Q: A factory produces LED bulbs with an average lifespan of 50,000 hours and a standard deviation of…

A: The top 10% of bulbs last for at least how long is obtained below:From the given information, the…

Q: Suppose that the antenna lengths of woodlice are approximately normally distributed with a mean of…

A:

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.3…

A: Let "X" be the shortest lifespan of the item in years. Refer Standard normal table/Z-table,…

Q: According to a recent survey, the salaries of assistant professors have a mean of $ 40,756 and a…

A: GivenGiven the salaries of assistant professors X follow a normal distribution.Mean = 40,756standard…

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

A: Let "X" be the lifespan of their items. Find z-value (z): Refer Standard normal table/Z-table,…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 6.5…

A: The random variable X is defined as the lifespan of items which follows normal distribution with…

Q: Suppose that the antenna lengths of woodlice are approximately normally distributed with a mean of…

A: Given data: Mean = 0.22 inches Standard deviation  = .05 inches To find: What proportion of woodlice…

Q: A popular fashion magazine claims that the age of their subscribers is normally distributed with a…

A:

Q: The standard deviation is now (Round to three decimal places as needed.)

A:

Q: A livestock company reports that the mean weight of a group of young steers is 1153 pounds with a…

A: Normal distribution is generally denser in the center, and basically less denser at the tails. There…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 12.3…

A: Given that  The data that life span of a product is normally distributed. Mean (μ) = 12.3 years.…

Q: The mean height of trees in the forest of Zambales is 42 ft and the standard deviation is 3 ft.…

A:

Q: The amount of time a certain brand of light bulb lasts is normally distribued with a mean of 1500…

A:

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

A: From the provided information, Mean (µ) = 15 years Standard deviation (σ) = 3.9 years Let X be a…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 3.5…

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 manufacturer knows that their items have a normally distributed lifespan, with a mean of 6.7…

A: Let "X" be the lifespan of an item. Draw the normal curve and shade the area of 0.02 to the left…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.6…

A: Solution: Let X be the lifespan. From the given information, X follows normal distribution with a…

Q: A set of data items is normally distributed with a mean of 30 and a standard deviation of 6. Convert…

A:

Q: The age at which babies walk is normally distributed with a mean of 13 months with a standard…

A: From the provided information, Mean (µ) = 13 months Standard deviation (σ) = 1.5 months Let X be a…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 12.4…

A: The provided information is: Meanμ=12.40 Standard deviationσ=3.30   Consider that X is a random…

Q: The times of first failure of a unit of a brand of ink jet printers are approximately normally…

A: Given that  μ=1500σ=200

Q: A telephone company has found that the lengths of its long distance telephone calls are normally…

A:

Q: normally distributed with a mean of 45 minutes and a standard deviation of 12 minutes.

A: Given that The amount of time a customer spends shopping in a grocery store is normally distributed…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 10.7…

A: Let X denote the lifespan of items and it follows normal distribution with a mean of μ=10.7 years,…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.6…

A:

Q: What is the standard deviation? (Round off to two decimal places if necessary)

A: Calculate Standard deviation  from the following…

Q: A livestock company reports that the mean weight of a group of young steers is 1119 pounds with a…

A: Given: μ = 1119 σ = 81 Formula Used; Z-score = X-μσ

Q: In the past, a chemical company produced 880 pounds of a certain type of plastic per day.  Now,…

A: Given values, n=50x¯=871s=21

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 10.7…

A: It is given that the mean is 10.7 years and standard deviation is 3.4 years. The z-score for 0.02…

Q: According to a recent survey, the salaries of assistant professors have a mean of $41,750 and a…

A: Given information: Mean salary of assistant professors μ=$41,750 Standard deviation of salary of…

Q: According to a recent survey, the salaries of assistant professors have a mean of $40,756 and a…

A: The random variable salary follows normal distribution. The population mean is 40756. The population…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 6.3…

A: Given that,  The 5% of items with the shortest lifespan will last less than the years is,

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 10.5…

A: Let us consider the X be a random variable which denotes the lifespan of items and it given that the…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 5 years,…

A: Given information Population mean µ = 5 years Standard deviation σ = 0.6 years We have given that…

Q: The standard deviation of the fuel consumption of a certain car is hypothesized to be equal to 1.72…

A: Solution: From the given information, the sample standard deviation is S=1.04, population standard…

Q: A researcher claims that the amounts of acetaminophen in a certain brand of cold tablets have a…

A: Hypothesis: Hypothesis is an assumption about the parameter of the population which will be made…

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.