The GPA distribution of the 30 students in this subject is given below. X = 0, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0 # of students = 24 6 2 7 5 3 1 1. What is the expected value of X? 2. Choose the closest the number to the standard deviation of X?

Q: The mean preparation fee H&R Block charged retail customers last year was $183(the Wall Street…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: A company providing mobile phone service plans has a list of phone numbers for their 125,000…

A: Given: x¯=10 s=8n=256

Q: Ryanair charges a mean base fare of $59. In addition, the airline charges for checking in at the…

A: The population standard deviation of total flight cost is known to be $25. An average $39 per…

Q: The mean preparation fee H&R Block charged retail customers last year was $183(the Wall Street…

A:

Q: For a standardized normal distribution, calculate the probabilities below. a. P(z< 1.2) b. P(z20.65)…

A: (a) Using the z-table, the area to the left of z = 1.2 is, From the table,  the area to the left of…

Q: The Mean height is 67 inches.  The standard deviation is 3.5 inches.  Assume the data is normally…

A: A Z-score is a numerical measurement that describes a value's relationship to the mean of a group of…

Q: An appliance dealer's website features the mean life expectancy values for major household…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: For a normal distribution, what is the probability of being within1 standard deviation of the…

A:

Q: Tom's commuting time from his residence in Carmel to the IUPUI campus has a normal distribution.…

A: Given that  The Tom's commuting time from his residence in Carmel to the IUPUI campus has a normal…

Q: The average age of vehicles registered in the United States is 96 months. Assume the population is…

A: Given that: X is normally Distributed with mean µ = 96.0 and standard deviation σ = 15.0 By using…

Q: What is the SAMPLE standard deviation? О а. 2.92 O b. 2.12 О с. 3.12 O d. 3.00 What is the computed…

A:

Q: sample standard deviation

A: A basketball player's average number of points per game (PPG) for each of his seasons is given in…

Q: Rochester, NY averages m=21.9 inches of snow for the month of December. The distribution of snowfall…

A: Let X represents the amount of snowfall, then we are given the information that  X follows normal…

Q: Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any question so I am solving…

Q: The mean preparation fee H&amp;R Block charged retail customers last year was $183(the Wall Street…

A: a) The mean is 183 and standard deviation is 50. The sample size is 30. The required probability is…

Q: The average GPA at the University of North Carolina is 3.2, with a standard deviation of 0.3. Assume…

A: According to the provided information, Mean (μ) = 3.2 Standard Deviation (σ) = 0.3

Q: A company providing mobile phone service plans has a list of phone numbers for their 125,000…

A:

Q: After deducting grants based on need, the average cost to attend the University of…

A:

Q: .In university’s football team average weight of players is around (72) kg, and the standard…

A: Given Information: Heights of football team players are normally distributed. Mean μ=72  Standard…

Q: answer all parts a, b, c, d, e

A:

Q: A bookstore sells books for $2, $3, $5, and $10. Let random variable X = "amount of money for one…

A: Given data represents the probability distribution of the random variable X = Amount of money for…

Q: A company providing mobile phone service plans has a list of phone numbers for their 125,000…

A: Given the following information, Sample size, n = 256 Sample mean, x=10 Sample standard deviation, s…

Q: Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an…

A: Let X be the Farm-raised trout contain an average (mean) of 32 grams of fat per pound, with a…

Q: A student assistant administers an exam for the incoming grade 11 ABM students. Fifteen incoming…

A: We have to find test statistics.

Q: Cmpincal Rule Instructions: Use the empirical rule to find the following probabilities. Remember to…

A:

Q: The average American male has a BMI of 28.6 and having a BMI over 25 is considered obese. In a…

A: The standard deviation of the sampling distribution of the sample mean is given by

Q: In a cafe, the proportion of people who order coffee with their lunch is 0.9. A simple random sample…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: The lengths of lumber a machine cuts are normally distributed with a mean of 92inches and a standard…

A: Given data: The given mean is xm=92 inches. The given standard deviation is σ=0.6. (a) The given…

Q: Let's assume that your sample mean and sample standard deviation are the true population mean and…

A: Let μ be the population mean and σ be the standard deviation. Let X be a random variable. Then,…

Q: e) Find the mean, expected value, variance, and standard deviation of the above scenario.

A: Here in this scenario, student takes a random guesses on his quiz. The quiz contains 5 multiple…

Q: Ryanair charges a mean base fare of $59. In addition, the airline charges for checking in at the…

A:

Q: Toothpaste According to a commercial, 4 out of 5 dentist recommend a certain brand of toothpaste.…

A: Any person can recommend or not so we two choices. Hence the toothpaste getting recommended or not…

Q: The mean preparation fee H&amp;R Block charged retail customers last year was $183(the Wall Street…

A:

Q: On the daily run of an express bus, the average number of passengers is 48. The standard deviation…

A: Mean = 48 Standard deviation = 3

Q: Belt Office Supplies sells desks, lamps, chairs, and other related supplies. The company’s executive…

A: Belt Office Supplies sells desks, lamps, chairs, and other related supplies. The company’s executive…

Q: The grade point averages (GPA) of 15 randomly selected college students are 2.3, 3.3, 2.6, 1.8, 0.2,…

A: Solution: x (x-x) (x-x)2 2.3 -0.0533 0.0028 3.3 0.9467 0.8962 2.6 0.2467 0.0609 1.8…

Q: bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of…

A:

Q: What is the LARGEST possible value of the sample standard deviation? о a. There is no largest…

A: It is given that the statement about to the sample standard deviation. Here, need to find out the…

Q: Allegiant Airlines charges a mean base fare of $89. In addition, the airline charges for making a…

A:

Q: You toss a fair coin 70 times. What is the standard deviation of the expected number of heads? Group…

A:

Q: Find the expected value, variance, and standard deviation for the values ​​below 1, 11, 29, 18, 4,…

A: We have given that  The data are 1, 11, 29, 18, 4, 5, 2 And we want to find mean,  Variance and…

Q: Allegiant Airlines charges a mean base fare of $89. In addition, the airline charges for making a…

A: The probability of a random variable is calculated by converting it by using the central limit…

Q: The recent average starting salary for new college graduates in IT systems is $47,500. Assume…

A: Given X~Normal(mean=47500, s=4500)

Q: The mean starting salary for nurses is $67,694 nationally ("Staff nurse -," 2013). The standard…

A: Hii ! Thanks for posting the question . Since , your question has more than 3 subparts , we have…

Q: . Which group do you think has the larger standard deviation? OA. The Africa group should have the…

A: Given Information: No. of population=2 Name of the populations: 1. European Country.…

Q: After deducting grants based on need, the average cost to attend the University of…

A: It is given that the mean is 27,175 and the standard deviation is 7,400.

Q: The average height of women is 64 inches. The standard deviation is 2 inches. The heights have a…

A: Let, X= height of women  Given that X follows normal distribution with mean= 64 inches and standard…

Q: The college students’ GPA's are normally distributed with a mean of 2.9 and standard deviation of…

A: Given : mean = 2.9 Standard deviation = 0.6

Q: The proportion of Americans who are satisfied with the way things are going in their lives is 82%.…

A: From the given information the sample size is (n) = 100 and the proportion of Americans who re…