The time spent by a teacher at work in the holidays is normally distributed with a mean of 20 hours and a standard deviation of 5 hours. What amount of time does the bottom 33% of teachers work? O 16.15 hours O 15.8 hours
Q: Recent Environmental Protection Agency (EPA) fuel economy estimates for automobile models tested…
A: Given that Mean(µ) = 24.8 Standard deviations (σ) = 6.2
Q: The heights of women have a symmetric distribution with a mean of 64 inches and a standard deviation…
A:
Q: The Pizza Place recorded the number of extra toppings added to each pizza. Compute the mean and…
A:
Q: Heights of 10-year-olds, regardless of gender, closely follow a normal distribution with a mean of…
A: Given, Heights of 10-year-olds, regardless of gender, closely follow a normal distribution with a…
Q: The tine spent by a teacher at woek in the holidays is nonually distributed with a mean of 20 hours…
A: From the above data Third option is correct 17.8
Q: A data set is formed by recording the sums in 400 rolls of a pair of a dice. A second data set is…
A: Standard deviation:The standard deviation indicates by how much each observation differs from a…
Q: American spend an average of 6.8 hours a night dreaming with a standard deviation of 1.2  hours.…
A:
Q: The final grades in a statistics course are normally distributed with a mean of 70 and a standard…
A: If a random variable x has a distribution with mean µ and standard deviation σ, then the z-score is…
Q: Find the mena deviation about the (a) median (b) mean in respect of the following numbers :…
A: Arrange the numbers in ascending order: 26,29,39,46,56,65,72,79,85,99 First we find median and mean…
Q: A pharmaceutical company claims that a drug is effective in treating 90% of people having severe mig…
A: Given information: The percentage of people having severe migraine headaches is 90%. That is, p=0.90…
Q: The police lieutenant in charge of the traffic division has reviewed the number of traffic citations…
A: Standard deviation= √E(X2)-(E(X))2 E(X)=( summation Xi)/n E(X2) = (summation Xi2)/n Here n= 19
Q: Using the ungrouped find the following | Quartile deviation, Average deviation, Standard deviation.…
A: Descriptive statistics can be used for explanatory data analysis purposes. It give a basic idea…
Q: There is an average of 4 accidents in a week on a major highway in the city. What is the standard…
A:
Q: In designing a work desk, it is found that males have sitting knee heights with a mean of 21.2 in,…
A: From the provided information, Mean (µ) = 21.1 Standard deviation (σ) = 2.2
Q: During I week, an overnight delivery company found that the weights of its parcels were normally…
A: 1. a. The percent of the parcels weighed between 12 oz and 30 oz is obtained below: It is given that…
Q: The annual commissilons per salesperson employed by a retailer of mobile communication devices…
A: Let X be the random variable from normal distribution with mean (μ) = $ 41200 ans standard deviation…
Q: he scores of students on an exam are normally distributed with a mean of 424 and a standard…
A:
Q: the NCAA estimates
A: There are two questions given in the file, Do find the solution for first question (34)Part aGiven…
Q: The distribution of passenger vehicle speeds traveling on the Interstate 5 Freeway (I-5) in…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: There are 15 mobile phones in a package box, 9 of which are iphones. If a person takes 5 phones from…
A:
Q: A recent survey was conducted to compare the cost of solar energy to the cost of gas or electric…
A:
Q: The average full-time faculty member in a post-secondary degree-granting institution works an…
A: In a bell shaped distribution, 68% items falls within one standard deviation of mean, 95% items…
Q: The ages of employees in a certain company were bell-shaped with mean 28 and standard deviation 5.…
A:
Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 268 days…
A: 1. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…
Q: 19. Commuting to work: The American Community Survey sampled 1923 people in Colorado and asked them…
A:
Q: . Sheldon owns a mango farm and the weight of his mangoes are normally distributed with an average…
A: here N = 800 n = 50 μ = 200 gramσ = 15 grams
Q: In a job fair, 3000 applicants applied for a job. Their mean age was found to be 28 with a standard…
A: The mean is 28 and the standard deviation is 4.
Q: The time spent by a teacher at work in the holidays is normally distributed with a mean of 20 hours…
A: X: time spent by a teacher at work in the holidaysX~N(μ,σ)Mean(μ)=20 hoursstandard deviation(σ)=5…
Q: The local ranger station tracked and tagged 2,844 adult female black bears in a national park. A…
A: Consider a random variable X, that defines the weight of female black bears.
Q: 1. A biologist found the wingspan of a group of monarch butterflies to be normally distributed, with…
A: Given: Mean= 52.2mm Standard deviation=2.3mm. We standard normal deviation.
Q: students who completed this core set of courses results in a mean math score of 24.6 on the college…
A: here sample mean = 24.6 sample standard deviation = 3.3 here n = 200
Q: The heights of women have a symmetric distribution with a mean of 66 inches and a standard deviation…
A: Given dataMean = 66 inchesStandard deviation =2.5 inchesApplying empirical formula68% of data falls…
Q: The commute time for Cypress College students who drive from their home to the college follows a…
A:
Q: Vacation Days If the average number of vacation days for a selection of various countries has a mean…
A: The mean is 29.4 days and the standard deviation is 8.6.
Q: An executive drives from her home to her office in the city. The driving times are normally…
A: Given, Driving time normally distributed with mean 35 and standard deviation 8 minutes.
Q: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…
A: Note- Since you have posted a question with multiple sub-parts, we will solve the first three…
Q: The time spent by a teacher at work in the holidays is normally distributed with a mean of 20 hours…
A: Given: mean μ= 20 Standard deviation σ=5 Concept: Here we shall use z score formula, z=x-μσ
Q: an gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is…
A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…
Q: Highway driving speeds are normally distributed with a mean of 62.4 and a standard deviation of 10.6…
A: Given information- Population mean, µ = 62.4 Population standard deviation, σ = 10.6 We have given…
Q: The time spent by a teacher at work during spring holidays is normally distributed with a mean of 20…
A: Given that. X~N( μ , ?^2 ) μ=20 , ?=5 Z-score =( x - μ )/?
Q: The highway mileage (mpg) for a sample of 10 different models of a car company can be found below.…
A: Data in order 22, 24, 26, 27, 39, 43, 43, 46, 48, 49 Mode may be defined as the maximum number of…
Q: The weights of 60 females in a physical education class are normally distributed with a mean of 135…
A: We want to tell you which one is the correct choice.
Q: What is the average score for those who work well with others in teams with the standard deviation?
A:
Q: Melvin surveyed the price of unleaded gasoline at gas stations in Davao city and Tagum City. The raw…
A: Given that, Melvin surveyed the price of unleaded gasoline at gas stations in Davao city and Tagum…
Q: If the mean height of a full-grown Wookie is 83 inches with a standard deviation of 4 inches, what…
A: Mean=83 Standard deviation =4 Z score =? For x=88
Q: In a certain microwave oven on the high power setting. the time it takes a randomly chosen kernel of…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: A Nielsen study indicates that 18- to 24- year olds spend a mean of 174 minutes watching video on…
A: Here, µ = 174 and σ = 15.
Q: A city took a survey of 1,550 households to find out how many televisions each owned. The mean was…
A: The margin of error helps in determining the fall of the sample mean within the decided range of the…
Q: The time spent by a teacher at work in the holidays is normally distributed with a mean of 20 hours…
A:
Step by step
Solved in 2 steps with 1 images