Wine Spectator rates wines on a point scale of 0 to 100. It can be inferred from the many ratings in this magazine that the average rating is 87 and the standard deviation is 3 points. Wine ratings seem to follow a normal distribution. In the May 15, 2007, issue of the magazine, the burgudy Domaine des Perdrix received a rating of 89.2 What is the probability that a randomly chosen wine will score this high or higher?

Q: er has a height of 6 feet 8 inches, or 203 cm. Based on statistics from a data set, his e of 4.10.…

A:

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

A: (a)   Obtain the probability that pregnancy will last 307 days or longer. The probability that…

Q: Micheal invested $2000 in a certain stock. At the end of the year the stock could be worth $1600,…

A: Given: Micheal invested $2000 in a certain stock. At the end of the year the stock could be worth…

Q: he distribution of heights of adult males has a mean of 69 inches and a standard deviation of 4…

A: Solution-: Let, X= The distribution of heights of adult males Given: (inches) We find, P[ he…

Q: The math department at a university gives all of the students in a certain math class the same final…

A: Let  denote the student score receive in the final exam.The random variable  follows a normal…

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: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: During one of the Kahana Resort’s “Trivia Nights,” 480 guests took the test on “Island Trivia.”  The…

A: Introduction: Define X as the random variable of interest here, which denotes the score obtained by…

Q: The summary data from study demonstrates a stronger relationship between how many minutes per day a…

A: Given : A standard deviation is a measure of how dispersed the data is in relation to the mean. Low…

Q: 4. A car salesperson notes that she sells either 1, 2, 3, 4, 5 or 6 cars per week with equal…

A:

Q: A researcher showed the mean of weights of college football players to be 200 pounds with a standard…

A:

Q: There are two major tests of readiness for college, the ACT and the SAT. ACT scores are reported on…

A: From the provided information, For ACT score: Mean (µ) = 21.5 Standard deviation (σ) = 5.4 For SAT…

Q: For a standardized psychology examination intended for a psychology. Major is the historical data…

A: sample size(n)=35mean(μ)=510standard deviation(σ)=170

Q: Laura learned that the average GPA in her school is 3.6 with a standard deviation of 0.3. If her GPA…

A: From the given information,   Mean = 3.6 Standard deviation = 0.3   The objective is to find the…

Q: Suppose, you play a game, and the result is simply "win" or "lose". For every 15 games played, you…

A:

Q: A student learns that on his most recent exam in psychology, the sample mean was 72.19 with a…

A:

Q: If the mean of the number of sales of houses is fifty-six, and the standard deviation is thirty-six,…

A: We have given, The mean number of sales of houses is x¯=56. And the standard deviation is σ=36.

Q: e are two major tests of readiness for college, the ACT and the SAT. ACT scores are reported on a…

A: For ACT scores:Mean of the distribution, Standard deviation of the distribution, The distribution of…

Q: A distribution of scores has a mean of 51.5, a median of 51.2, and a mode of 51. Based on this…

A:

Q: The weights of college football players are normally distributed with a mean of 193 pounds and a…

A: Mean = 193 Standard deviation = 53

Q: Tires that wear out bynothing miles will be replaced free of charge.

A: Solution:

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

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

Q: Lucille, Rocio, and Cristina are all taking College Mathematics but from different professors. They…

A: Lucille's class had an average grade of 85 and the standard deviation was 3. Lucille earned 89.5 on…

Q: Nationally, patients who go to the emergency room wait an average of 4 hours to be admitted into the…

A: b. Null hypothesis: H0: µ=4. Alternative hypothesis: H1:µ>4.

Q: The average person uses 130 gallons of water daily. If the standard deviation is 35 gallons , find…

A: Given that, Mean = 130 Standard deviation = 35 Sample size = 25

Q: The length of songs in the Big Hair playlist of a Statistics professor's mp3 player varies from song…

A: a) The probability that the next song to be played is between 3.9 and 4.85 minutes long is 0.5321.b)…

Q: Suppose the scores on a college entrance examination are normally distributed with a mean of 525 and…

A: Suppose the scores on a college entrance examination are normally distributed with a mean of 525 and…

Q: A professor knows that her statistics students' final exam scores have a mean of 79 and a standard…

A:

Q: Jessica knows that the average profit of manufacturing plants nationwide each year is $100,000 with…

A: Given information: μ=100,000σ=16,000n=35

Q: In a survey, 80% of the voters support a particular referendum.  If 30 voters are chosen, find the…

A: Number of voters(n)=30∵80% of the voters support a particular referendum i..e. p=0.80

Q: Entry to a certain University is determined by a national test. The scores on this test are normally…

A:

Q: The college physical education department offered an advanced first aid course last summer. The…

A: Solution: Let X represent the scores on the comprehensive final exam were normally distributed with…

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.