The distribution of average speeds of the top 53 drivers in NASCAR is roughly symmetric, unimodal, and bell-shaped, with a mean of 184.4 mph and a standard deviation 7.2 mph. what percent of drivers would you expect to have speeds below 199.2 mph? what is the area under the curve to the left of a speed of 170mph? What is the probability that a driver selected at random will have a speed 172.0mph?   What percent of drivers would you expect to have a speed above 177.0 mph? how many drivers would you expect to have speeds between 170.4mph and 177.0mph? what would be the speed of a driver who was at the 96th percentile?

Q: a successful basketball player has a height of 6 feet 9 inches, or 206 cm. Based on statistics from…

A: Given,           Z -score=4.45           A basket ball player has a height of  6 feet 9…

Q: Find the mean and standard deviation for the numbers of sleepwalkers in groups of five.

A: Given: X P(x) 0 0.175 1 0.357 2 0.318 3 0.118 4 0.028 5 0.004

Q: As part of the National Health and Nutrition Examination Survey, subjects were asked how long they…

A: The question is about descriptive stats Given : Data :   To find : Value of mean

Q: The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 365…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A:

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: Body temperature (in degrees Fahrenheit) of randomly selected normal and healthy adults are shown…

A:

Q: 95% of 80 freshman history students scored between 70% and 80% on a take home quiz. If this data is…

A: Given,  n=80 α= (1-0.95) =0.05 Let X denote the score of freshmen. As per t-distribution table, the…

Q: A successful basketball player has a height of 6 feet 2 ​inches, or 188 cm. Based on statistics from…

A: Given the Z score of height of basket ball player is 1.95. The original height of the basket ball…

Q: The average daily points for my fantasy baseball team are {4.1, 5.7, 3.8, 4.7, 4.7, 5.5, 4.1, 2.7,…

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

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: A history class has 95 members. If there is a 22% absentee rate per class meeting , find the mean…

A:

Q: What is a common way to measure the center of a distribution of data?   a. scatter plot…

A: The objective of the question is to identify a common statistical measure that is used to determine…

Q: Angela polled her first grade class about their family pets. The following data lists the number of…

A:

Q: Suppose the mean height in inches of all 9th grade students at one high school is estimated.

A: Population standard deviation, σ =3 inches Sample size n=6

Q: A random sample of 15 college students were asked​ "How many hours per week typically do you work…

A: we will form the frequency table of the given data after arranging them into ascending order

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A: Mean = 243 feet SD = 54 feet Find the value of z to get answers.

Q: Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have…

A: The given situation follows binomial distribution. The proportion of people born in United States…

Q: The systolic blood pressure of 18-year-old women is a roughly bell-shaped distribution with a mean…

A: We have given that.   X~N( μ , ?^2 )   μ =120 , ? =12   Z-score =( x - μ )/?

Q: s known that o = 2.15 pounds. %3D sample should be taken to be 93% confident that the sample mean is…

A: The sample size can be calculated as: n=z×σE2 Here, z = desired confidence level E = The allowable…

Q: A statistician was exploring a set of data representing a group of 121 women.  The mean was 49 and…

A: Sample size, n = 121 Mean = 49 Variance σ2 = 9 We have to find the standard deviation.

Q: The average travel time to work for a person living in Kokoma, Indiana, is 17  minutes.  Suppose the…

A: Solution: Let X be the average travel time to work for a person living in Kokoma  Indiana has normal…

Q: A study by the National Center for Health Statistics suggested that women between the ages 20 and 29…

A: The objective of this question is to find the proportion of women between the ages of 20 and 29 in…

Q: In a study of Ridge View's boys' basketball team, the average height is 68 inches and standard…

A: Given, mean =μ=68Standard deviation = 4x = 78

Q: Salaries at a company are normally distributed with a mean of $31000 and standard deviation $5000.…

A: Given that

Q: At a fishery, the largest catches in August were of blackfin tuna, sailfish, blue marlin, and king…

A: Given Blackfin tuna  SD=2.61  Sailfish  SD=4.61 Blue marlin  SD=1.97 King mackerel SD=6.67

Q: he accompanying​ table, which describes the number of adults in groups of five who reported…

A: x p(x) xp(x) (x-xbar)^2 p(X)*(x-xbar)^2 0 0.192 0 2.027776 0.389333 1 0.367 0.367 0.179776…

Q: Ten neighborhood kids went out to score some candy on Halloween night. Here's a list of the number…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: 50 part-time students were asked how many courses they were taking this term. The (incomplete)…

A: Hi, we are supposed to answer three subparts at a time. Therefore, I am answering the first three…

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 mean age for licensed physicians in the United States is 51.5 years. A government official…

A:

Q: e patient recovery time from a particular surgical procedure is normally distributed with a mean of…

A: GIVEN DATA, normal distribution μ=5.3σ=1.1we have to find out the given probabilties

Q: The ten fastest times in a city marathon are below.  Find the mean, median, and mode of this set.…

A: Given Data: Time set: {2 hr 46 min ; 3 hr 7 min ; 3 hr 32 min ; 3 hr 33 min ; 3 hr 46 min ; 3 hr 54…

Q: Recently, a random sample of 25–34 year olds was asked, "How much do you currently have in savings,…

A:

Q: The ages for a sample of fans at a concert are listed. Whats the mean, median, mode, range,…

A: The mean of a data set is commonly known as the average. You find the mean by taking the sum of all…

Q: The A.C Nielsen company reports that about 85.5% of U.S households have a color T.V. Find the mean…

A: The mean number of households have a color T.V is, μ=np=6×0.855=5.13 Thus, the mean mean number of…

Q: If the mean speed for a major league fast ball is 90 miles per hour and the standard deviation is 5…

A: Given Information: Mean = 90  Standard deviation = 5 Standardized score for a pitch that is 97 miles…

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.