1. A set of 125 golf scores are normally distributed with a mean of 76 and a standard deviation of 3. a) What percent of the scores are between 67 and 85? b) What is the probability that a score is no more than 79? c) About how many scores fell between one standard deviation of the mean? d) About how many scores were greater than 82?

Q: 1. The heights of 200 plants in a garden follow a normal distribution with a mean of 72.3 cm with a…

A: Solution

Q: .Suppose a population is known to be normally distributed with a mean, u, equal to 144 and a…

A: Given data,μ=144σ=27P(90<144)=?

Q: a) In the analysis of a barrel of powder, the standard deviation of the sampling operation is ±4%…

A: a) The standard deviation of the sampling operation is ± 4% or ± 0.04 and the standard deviation of…

Q: 3. In regard to the standard deviation you calculated on #2, what is one conclusion you can make…

A: You have asked only question 3. So, the answer is given for question 3 below in the next step.

Q: Below is a list of number of dogs owned by families, in a particular neighborhood, find the mean and…

A: According to the given information, it is required to determine the mean and standard deviation.

Q: 1. Consider the normal distribution of IQs with a mean of 100 and a standard deviation of 16. What…

A: Note: As per guidelines we are supposed to solve only 1 question at a time. Please repost the other…

Q: A survey of 1000 women ages 20 to 30 found that their heights were normally distributed, with a mean…

A: (a) From the given information The mean is 65 in. and a standard deviation is 2.5 in. The mean x¯ of…

Q: at on one section of the SAT the mean is 500 and the standard deviation is 100, what is the…

A: From the given information, Consider, X be the random variable that shows the scores of a students…

Q: In a certain distribution of​ numbers, the mean is 80 with a standard deviation of 3. At least what…

A:

Q: 7. If you made only n = 1 measurement of rack height, the standard deviation of the measurement…

A: Solution: 7. From the given information, n = 1.

Q: According to the Chebyshev's rule, the proportion of observations within 2.5 standard deviations of…

A:

Q: A group of 123 bunnies had a mean hopping distance of 48 inches and a standard deviation of 3.5…

A: To find the number of: a) Bunnies will hop between 41 and 44.5 inches b) Bunnies will hop between 48…

Q: (a) How many reams should the manager expect to use each day? (b) What is the standard deviation of…

A: here given Discrete probability Distribution of X  X=  no of reams of paper Used

Q: According to a government study, among adults in the 25- to 34-year age group, the mean amount spent…

A: Given : The mean amount spent per year on reading and entertainment is $1,994. Assume that the…

Q: 4. If each of a set of raw scores is transformed into a Z-score, the new distribution will have a…

A: 4) The mean and standard deviation of the normal distribution are µ and σ.

Q: b) Suppose that in a random sample of 600 customers, 270 express satisfaction with the dealership.…

A: sample of 600 customer

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: If the average low temperature of a winter month in Rochester, NY is 16° and the standard deviation…

A: The Chebyshev’s inequality theorem states that of the data values falls inside the k standard…

Q: Given that the mean weight of senior high school students is 65kg with a standard deviation of 10kg.…

A:

Q: n pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample of 164…

A: As the population standard deviation is not known, we will use t distribution.

Q: 2. Suppose that in an examination, the cut-off score for passing is 75 for 200 persons. If the mean…

A: Given that, Suppose that in an examination, the cut-off score for passing is 75 for 200 persons. If…

Q: 7. The height of rugby players is normally distributed with a mean of 1.86 m and a standard…

A: Given: Population mean μ=1.86 Population standard deviation σ=0.08 Middle 80% so, α=1-0.80=0.20

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 116 and a standard…

A:

Q: 19. What is the standard deviation, o, in the heights of tenth grade girls shown in the table below?…

A:

Q: 4) According to one pollster, 59 % of people are afraid of flying. Suppose that a sample of size 26…

A:

Q: The weights, in pounds, of a group of dogs are:          18, 31, 22, 46, 55, 28.    Calculate the…

A: Given Data The weight of a group of dogs are: 18,31,22,46,55,28   The size of group is N=6   The…

Q: 4. Assume that the test scores from a college admission test are normally distributed with a mean of…

A: Given  μ= Mean of test score from a college admission test = 450 σ= Standard deviation of test score…

Q: The variance of a sample of 169 observations equals 576. The standard deviation of the sample equals…

A: given  variance of sample = 576 we know that , sample standard deviation equals square root of…

Q: 1. Assume the speed of vehicles along an open stretch of a certain highway in Texas that is not…

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

Q: Assume that the test scores from a college admissions test are normally distributed, with amean of…

A:

Q: Suppose that the scores of a history test are normally distributed with a mean of 565 and a standard…

A: As per Bartleby guideline expert have to answer first three subparts only..

Q: Sam Ying, a career counselor, claims the average number of years of schooling for an engineer is…

A:

Q: Suppose that the amount of sleep college students get per night has a symmetric, bell shaped…

A: Note: Hey, since there are multiple subparts posted, we will answer first three subparts. If you…

Q: 4.15. If the local restaurants in a small town record an average of 92 customers a day, with a…

A:

Q: (25) The distribution of average speeds of the top 53 drivers in NASCAR is roughly symmetric,…

A: (a) Draw the normal curve with the values from Z=–3 to Z=3

Q: The population of SAT scores forms a normal distribution with a mean of μ = 500 and a standard…

A:

Q: If the average low temperature of a winter month in Rochester, NY is 18∘18∘ and the standard…

A: According to the Chebyshev's theorem, 1-(1/k²) of the observation fall within k standard deviation…

Q: - If a population with µ =72 and o = 8, the distribution of z-scores will have a mean and standard…

A: Given: Mean = µ = 72 Standard deviation = σ = 8

Q: (O) What is the standard deviation of a distribution that has a mean of 46.2 if a PERFORMANCE value…

A: From the provided information, Mean (µ) = 46.2 Performance value (x) = 28 Z score = -1.24

Q: A population has a standard deviation of  = 30. A. On average, how much differences should exist…

A: Given Standard deviation (σ) = 30Sample size (n) = 4and standard error = σn…

Q: 4. The lowest and the highest data value of a data set are 12 and 28 respectively, then the…

A:

Q: a. What is the difference between the weight of 5.47 lb and the mean of the weights? b. How many…

A: Given :   X-bar=1.819  , s=1.401 , highest weight=5.47 We want to answer the following :  a) What is…

Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full-…

A:

Q: (c) If the storeroom has 30 reams at the start of the day, how many should the manager expect to…

A: Given: X 0 1 2 3 4 5 P(X=x) 0.05 0.15 0.25 0.4 0.05 0.1

Q: Find the standard deviation for the group of data items (to the nearest hundredth)8,9,10,11,12

A:

Q: Assume that heights of women are normally distributed with a mean given by 63.6 in. and a standard…

A: Given : Mean = μ = 63.6 Standard deviation = σ = 2.5

Q: According to the Chebyshev Rule, at least 96% of all observations in any data set are contained…

A: Given Data: The percentage amount of data is: D%=96% From Chebyshev rule, The percentage amount of…

Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full…

A:

Q: About what percent of x values lie between the first and second standard deviations from the mean…

A:

Q: Assuming that the heights of college women are normally distributed with mean 65 inches and standard…

A:

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.