Let X represent the time between each two cars passing the high way. Then X may follow: Chi-squared Distribution Poisson Distribution Binomial Distribution Normal Distribution

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=100 and a standard…

A:

Q: Give the formula for calculating percentiles of a continuous distribution.

A: Here we have to give the formula for calculating percentile of a continuous distribution

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard…

A:

Q: Describe in brief the uniform distribution.

A: The uniform distribution is a probability distribution which is used when the outcomes are equally…

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: Finding the value of z at lowest 14-1.08032 ( From Excel =NORM.S.INV(0.14))Finding the value of z at…

Q: he percentage of heights less tahn 169 centimeters is ________%.  Round to two decimal places as…

A: mean = 169 sigma = 7

Q: This describes the long -run behavior of a statistic .  - distribution of Mus (population means ) -…

A: One standard deviation, or one sigma, plotted above or below the average value on that normal…

Q: And amateur motorcycle racer average is 129.12 seconds per 2.5 mile lap in a 7 lap race  with a…

A: Introduction: The random variable, Denote X denotes the number of seconds required to complete a…

Q: In the field of statistics, give an example of: A discrete variable.  A continuous variable.  A…

A: Qualitative data:   The data consists of only the categorical data is considered to be qualitative…

Q: The t distribution is appropriate to use when?

A: Condition for t distribution

Q: Decide which of the following statements are true. The line of symmertry for all normal…

A: One type of continuous probability distribution is a normal distribution. It shows the symmetrical…

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=100 and a standard…

A: Z = x-μσ~N(0,1)

Q: A symmetric frequency distribution has identical mean, median and mode measures True False

A: We have given that an statement about the symmetrical distribution.

Q: Use the normal distribution of IQ scores, which has a mean of 130 and a standard deviation of 15,…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: The probability that a randomly selected adult has an IQ less than 128 is (Type an integer or…

A: Given:  Consider X as a random variable that follows a normal distribution with mean 22 and…

Q: Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.t Suppose a small…

A: Given: n=19x¯=3.15σ=0.40

Q: A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from…

A: Given that,The sample size is 25The confidence level is 0.98The sample meanThe sample standard…

Q: 1. An electrical firm manufacturers light bulbs that have a length of life that is approximately…

A: An electrical firm manufacturers light bulbs that have a length of life that is approximately…

Q: Assume that the scores from the above sample are measurements of a continuous variable and find the…

A: Given Data : 10, 12, 11, 9, 8, 11 Also provided , Mean = 10.1   Mode = 12

Q: Mention two real life applications for the distribution.

A: There are lot of real life applications of distributions. The of those are as following   1.…

Q: Find the sample size necessary for an 80% confidence level with a maximal margin of error E= 0.07…

A: Given that s.d =0.34,alpha =0.2,E =0.07 ( e) n= ?

Q: Assume that X, the starting salary offer for anthropology majors, is normally distributed with a…

A: First, we need to calculate the Z-scores for the given salary amounts. The Z-score is a measure of…

Q: Identify if its true or false A normal distribution is symmetrical at the mean, i.e. the left side…

A:

Q: Decide which of the following statements are true. Answer Normal distributions are symmetric, but…

A: Here we have identify the correct statement

Q: A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of…

A: The population standard deviation is unknown here. The population distribution is approximately…

Q: State three examples where similar averages are associated with very different distributions Go…

A: Given :  State three examples where similar averages are associated with very different…

Q: X is the time of completing a task using specific software. X has a normal distribution with a mean…

A: X has normal distribution with mean µ = 24 and variance, σ 2 = 49 => standard deviation σ = 7 We…

Q: t is the least percentage of data that falls within 2.5 standard devia

A: This Chebyshev's theorem can be applied to any type of distribution. To use Chebyshev's theorem, it…

Q: When the degrees of freedom is large, the t distribution becomes?

A: Given  When df is large  Then t distribution transform into ?

Q: Suppose that the distance of fly balls hit to the outfield is normally distributed with a mean of…

A: We  have to find given probability..

Q: Which of the following correctly describes the relationship between the standard normal and the t…

A: We have to determine which statement is true for given situation.

Q: ople or more 18. The lifetime of a flashlight battery is normally distributed with a mean = 35.6 hr…

A: The lifetime of a flashlight battery is normally distributed with a mean = 35.6 hr with standard…

Q: Describe the difference in shape between a gamma(shape = 5, rate= 10) distribution and a beta(shape…

A: Given:- γα=5,λ=10    and    βa=10,b=5   we have to find mean,skew and interquartile range