The times that college students spend studying per week have a distribution skewed to the left with a mean of 8.8 hours and a standard deviation of 2.0 hours. Find the probability that the mean time spent studying per week for a random sample of 65 college students would be a. between 8.4 and 9.0 hours.

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Given : Average bus time is: μ=31 minutes Standard deviation: σ=5 minutes The Z-score is calculated…

Q: In a recent study, the Centers for Disease Control and Prevention reported that the diastolic blood…

A: Solution: Let X be the diastolic blood pressure of adult men. From the given information, X follows…

Q: A newsvendor wants to achieve a 0.975 in-stock probability. Demand is normallydistributed with a…

A: Introduction: A continuous probability distribution that is symmetrical on both sides of the mean is…

Q: Moore Reno, an officer in the highway patrol group, observed that the speeds of vehicles on a…

A:

Q: the golf scres for a team were normally distributed with a mean of 95 and a standard deviation of 6.…

A: We have find givan normal distribution..

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 31…

A: P(X>30)=1-Pz<30-311045=1-P(z<-0.67)=1-0.2514=0.7486

Q: The number of calories in a certain dessert is normally distributed with a mean of 210 and a…

A: Given: μ=210 and σ=12. The z-score is calculated asz=x-μσ

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 31…

A: The given data are: Mean, μ=31 minutes Standard deviation, σ=5 minutes n=40 For sample average, z is…

Q: Most graduate schools of business require applicants for admission to take the GMAT exam. Suppose…

A: The random variable is score on the GMAT. It follows standard normal distribution. The population…

Q: A student finds that the average price of a movie ticket in Washington is $12.25 and that the…

A: From the provided information, Mean (µ) = $12.25 Standard deviation (σ) = $2 Let X be a random…

Q: A set of final examination grades in an introductory statistics course is normally​ distributed,…

A: Let "X" be the final examination grades in an introductory statistics course. Find z-value: Note…

Q: In a recent study, the Centers for Disease Control and Prevention reported that the diastolic blood…

A: Given that, Mean, mu= 80.5 And standard deviation, sigma= 9.9 X~ N(80.5, 9.9) We know that, z score…

Q: Suppose that the average amount of ice cream that children eat at birthday parties is 3.6 oz, with a…

A: a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 28…

A: P(X<30)=Pz<30-28540=P(z<2.53)=0.9943

Q: The distribution of the number of viewers for the American idol television show follows a normal…

A: a) Probability that next week show will have between 30 and 34 million viewers: The probability that…

Q: A set of final examination grades in an introductory statistics course is normally​ distributed,…

A: Given that, A set of final examination grades in an introductory statistics course is normally​…

Q: Peter collected data to find that the finishing times for cyclists in a race has a normal…

A: 68-95-99.7-rule: Let X be an observation from a normal distribution, having mean µ and standard…

Q: A local sports magazine reports the mean length of a baseball game to be 175.9 minutes with a…

A: Given, mean, μ= 175.9 minutes standard deviation,  = 27 minutes n = 30

Q: According to a Sallie Mae survey and credit bureau data, in 2008, college students carried an…

A:

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Solution: Let X be the transport time. From the given information, X has mean µ=28 minutes and a…

Q: The heights of students are normally distributed with a mean of 59 inches and a standard deviation…

A:

Q: The spending at Target is distributed normally with a mean spending of $47.67 and a standard…

A:

Q: The average hourly wage for manufacturing workers in the United States is $20.89 per hour, With a…

A: Give that  The hourly wage for manufacturing workers in united states is $20.89 μ = 20.89 Standard…

Q: The test scores for a very large statistics class have a bell-shaped distribution with a mean of 72…

A: We have given that  X~N(mu, sigma^2) mu = 72  Z-score =(x-mu )/sigma

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 13 inches,…

A:

Q: The wind speeds throughout the month of April were normally distributed with a mean of 17 mph and a…

A: We have given that  X~N(mu,sigma ^2) mu=17,sigma =4 Z-socre =(x-mu)/sigma

Q: Suppose a survey finds that the mean monthly rent of a two-bedroom apartment in seattle is $560,…

A: Given Information:Mean, μ=$560Standard Deviation, σ=$35

Q: Assume that the height of people, measured in inches, has a normal distribution with a mean of 65…

A:

Q: A professor at a university gives her large class an examination and finds that the scores follow…

A:

Q: The grades of a statistics midterm are normally distributed with a mean of 79 and a standard…

A: Normal distributionμ=79σ=3.5pgrade between74 and 80=?

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Let X be the transport time. From the given information, X has mean µ=28 minutes and a standard…

Q: A set of final examination grades in an introductory statistics course is normally​ distributed,…

A: Let "X" be the grades of final examination. Use excel formula "=NORM.S.DIST(1.5714, TRUE)" to…

Q: The diameter of a brand of tennis balls is approximately normally distributed with a mean of 2.5…

A:

Q: The heights of 18-year-old men are approximately normally distributed with a mean of 68 inches and a…

A:

Q: . If the probability of a defective bolt is 0.1, find (a) the mean (b) the standard deviation for…

A:

Q: The grades in a standardized test have a mean of 78, a known standard deviation of 8, and are…

A: Given:

Q: A set of final examination grades in an introductory statistics course is normally​ distributed,…

A: Here, µ = 72, σ = 9.

Q: The final exam scores in a Mathematics class were normally distributed with a mean of 75 and a…

A: As per our guidelines we are suppose to answer only one question. Given,mean(μ)=75standard…

Q: A statistical analysis of a very large sample of fully-assembled medical devices indicates that the…

A:

Q: The heights of 18 year-old men are approximately normally distributed, with a mean 68 inches and a…

A: The random variable height follows normal distribution. The population mean is 68. The population…

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Solution: Let X be the transport time. From the given information, X has mean µ=31 minutes and a…

Q: The weights of college football players are normally distributed with a mean of 191 pounds and a…

A: Given,   Mean = 191 Standard deviation = 49

Q: Suppose the area that can be painted using a single can of spray paint is slightly variable and…

A: It is given that the area that can be painted using a single can of spray paint has a normal…

Q: Among third year students at AUM, scores in Probability and Statistics follow a normal distribution…

A: Given: Population mean  = 82 Population standard deviation = 4 Consider X be the random variable…

Q: Find the indicated probability. An insurance company has determined that the cost of a certain…

A: Given information Mean µ = $800 Standard deviation σ = $40

Q: The ages of patients in a hospital were normally distributed with a mean of sixty-three years and a…

A:

Q: The heights of 18 year old men are normally distributed with a mean of 67 inches and a standard…

A: Given distribution is normally distributed with mean 67 and standard deviation 3 x~N(μ=67, σ=3)