The distribution of the weights of a sample of 1,400 cargo containers is symmetric and bell-shaped. According to the Empirical Rule, what percent of the weights will lie: a. Between x - 2s and x + 2s? b. Between x and x + 2s? Above x + 2s?

Q: Suppose X has a Weibull distribution with B = 3 and 8 = 4000 . What is P(X > 4500)?

A:

Q: Find each of the requested values for the distribution shown in the following table. (a) What score…

A: Percentile Rank (PR): It is the measure of the relative performance, where it is the percentage of…

Q: In using the t distribution table, what value of t would correspond to an upper-tail area of 0.025…

A: The degrees of freedom is 22, and upper-tail area is 0.025. Computation of critical value: The…

Q: For a variable x that is noramally distributed with a mean of μ = 50 and a standard deviation σ = 5,…

A: It is given that the mean and standard deviation are 50 and 5, respectively.

Q: : At 90% confidence, how large a sample should be taken to obtain a margin of error of 0.04 for the…

A: The margin of error (E) is 0.04 and the confidence level is 0.90.

Q: A distribution is given as X ~ Exp(0.75). What is m?

A: Exponential distribution: A continuous r.v. X taking non-negative values is said to follow an…

Q: Based on the graph of this normal distribution, a. The mean is b. The standard deviation is c. 68%…

A:

Q: For the distribution in the following table, what is the percentile rank for X = 8.5?

A: Given that  X C% 9 100% 8 80% 7 50% 6 25% Here, Percentile rank for x=8.5

Q: For the data given, as the confidence leel increased from 95% to 99% did the margin of error…

A: We have given that a random sample of eye colours collected from a group of 40 MVCC students.

Q: For a distribution in which X = 100, SX = 16, and N = 500 How many subjects are expected to score…

A: The number of subjects expected to score above 76 is,

Q: 70 - 79 1 60 - 69 2 50 - 59 40 - 49 6. 30 - 39 4 20 - 29 1 10 - 19 1

A: Given data is appropriate for measures of dispersion. Given data is in inclusive so, we need to…

Q: Given the interval estimate for the mean (9.2, 18.8), the point estimate for the mean is and the…

A: The given interval estimate for the mean is (9.2, 18.8).

Q: For a data set of 133 values, a histogram created based on Sturge's Rule would have how many bins?

A: Given information: Number of observations. in data set = 133 Sturge's Rule is method of choosing the…

Q: If we took many samples of size 100 from the population of all movies and recorded the mean budget…

A:

Q: Find the 1st quartile, 7th decile, 35th percentile, and percentile rank of 115 and 155 for the…

A:

Q: 5. Heights, in feet, of a sample of 18 mature oak trees in a forest were measured. The results were…

A: The mean of the given data is calculated (using excel) as follows:

Q: average heigth is 163 cm, standart deviation is 10 cm. compute p(X>168 cm) ?

A: Given,μ=163σ=10P(X>168)=?

Q: Given the interval estimate for the mean (6.2, 17.6), the point estimate for the mean is , and the…

A: Given information- We have given the confidence interval estimate for the mean = (6.2, 17.6) We have…

Q: What score has a percentile rank of 50%?

A: From the given information: n=20 k=50 Therefore, using this following formula to find the LP…

Q: In a distribution with o = 5, a z-score of z = +2.00 corresponds to a location that is 10 points…

A:

Q: Q6) From the Uniform Distribution, find the mean and standard deviation from the graph: f (x) 20 20

A: Given : From given graph : Let X be r.v follows uniform dist.  X~U[0,20] a=0 , b=20

Q: For a sample with M = 10 and s = 2, a score of X = 13 would be considered an extreme score, far out…

A: According to range rule thumb if any observation is less than M – 2s, or greater than M + 2s, then…

Q: Find the score for which 70% of the distribution's are a lies to the right?

A: P ( Z>z ) =0.70 Find z = ?

Q: Given a data set with = 18 and o= 3, find the percent of data within each range: between 15 and 21 =…

A: Given that  Mean = µ = 18 Standard deviation = σ = 3 Z-score formula  Z = ( X - µ ) / σ Note :…

Q: In a distribution with o = 5, a z-score of z = +2.00 corresponds to a location that is 10 points…

A: From the provided information, Population standard deviation (σ) = 5 The z value = +2.00

Q: A sample of n = 10 scores has a mean of M = 3. What is ΣX for this sample?

A: The general formula for the sample mean is given below:

Q: Find each value requested for the distribution of scores in the following table.a. nb. ΣXc. ΣX x…

A: Frequency distribution that explains the how often a variable occurs in a tabular form. Here, N=∑f

Q: Given the interval estimate for the mean (8.2, 18.6), the point estimate for the mean is and the…

A: Obtain the value of the point estimate of mean.   The value of the point estimate of mean is…

Q: Given that s.e.(b) = 61 and the estimate is 32, what is the t-stat?

A: GivenSEβ=61Estimate(β)=32

Q: With 95% confidence, what is the margin of error when estimating a population mean when n = 100 and…

A:

Q: The Mean for a Binomial Distribution is A. p В. q С. пр D. npq

A: X ~ B (n, p) P(X=x) = Cxn px(1-p)n-x  ; x=0,1....n                              0≤p≤1 ,  q=1-p n -…

Q: If X∼U(7,20) follows a uniform distribution, what is the mean of X?

A: The mean of X is obtained below: From the given information, X∼U(7,20) follows a uniform…

Q: are approximately normally distributed, about how many applicants got scores a. above 78? b. above…

A:

Q: Given the interval estimate for the mean (8.2, 11.4), the point estimate for the mean is and the…

A: Given information- We have given the confidence interval estimate for the mean = (8.2, 11.4) We have…

Q: Given the interval estimate for the mean (5.2, 17.8), the point estimate for the mean and the margin…

A: Given, The interval estimate is      (5.2,17.8)

Q: For a distribution in which X = 100, SX = 16, and N = 500: (a) What is the relative frequency of…

A: Hi! Thank you for posting the question. Since your question has more than three sub-parts, we have…

Q: Suppose you have a distribution with a mean equal to 10, median equal to 20, and mode equal to 30.

A:

Q: Given the interval estimate for the mean (9.8, 17.8), the point estimate for the mean is and the…

A: Give that  Interval estimate for the Mean (9.8 , 17.8) Lower limit = 9.8 Upper limit = 17.8   We…

Q: The value of the distribution function at x=3.9 is

A: The distrubution function is defined as F(x) = P(X≤x) = ∫-∞xfxdx

Q: If numerous samples of N = 15 are taken from a uniform distribution and a relative frequency…

A:

Q: Which of the following predictions can be calculated using a geometric distribution?

A: here use basic of geometric distribution

Q: snip

A: Given: p¯=0.01n=25z=3.0 The upper and lower control limits of p-chart is obtained as below:…

Q: The test scrores of a sample of 100 students have a symmetric mounded distribution with a mean score…

A:

Q: In a distribution with u= 80 and o = 20, a z-score of z = -1.00 corresponds to an X value of X = 70.…

A: Formula of z score : z = x-μσ

Q: Given a set of normally distributed scores with the mean of 20.00 and SD of 5.00, what proportion of…

A: We are givenμ = 20, σ = 5a)We have to find P( 10 < x < 28 )

Q: The amount of growth, in a 15-day period, for a population of sunflower plants was found to follow…

A:

Q: Given the interval estimate for the mean (9.2, 13.4), the point estimate for the mean is _______ ,…

A: The given interval estimate for the mean is (9.2, 13.4).The margin of error is calculated below:

Q: The results of a nationwide aptitude test in mathematics are normally distributed with m=80 and…

A: Given: m = 80 s = 10

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.