Certain cross of the pea gave 5321 yellow and 1804 green seeds. The expectation is 25% of green seeds on a Mendelian hypothesis. Can the divergences from the expected values be taken have been arisen from fluctuations of simple sampling only?

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A: Binomial distribution: P(X=x) =Cxn px(1-p)n-x ; x=0,1.....n…

Q: In a random sample of 1000 B.Com students, 125 said that they wanted to become Statisticians. Assume…

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Q: In a large manufacturing of mobile phones, it was detected that 20% have batteries with voltage…

A: Define the Random Variable, X  : Voltage of a mobile phone Assume that , X ~ N(µ,σ2) So, Z = X - µσ…

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Q: Suppose that the number of customers who enter a bank in an hour is a Poisson random variable, and…

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Q: A sample of size 50 from a unimodal( one mode), distribution that is skewed to the right has…

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Q: nufacturer knows that their items have a normally distributed length, with a mean of 10.6 inches,…

A: Given data,Mean μ=10.6sd  σ=2P(X<10.4)=?

Q: What is the probability that a randomly selected depth is less than 3.30 m?  What is the probability…

A: Given that  Probability distribution function (pdf) a=2.50    , b=6.50 f(x)=1/(b-a)     ,…

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Q: The bearing for any computer hard drive can be modeled as a random variable with mean 0.225 mm and…

A: Let X be random variable that bear hard drive for any computer.   We are given X~N(μ, σ2) with mean,…

Q: Let X be a binomial random variable that is binomially distributed with a mean of 9 and a variance…

A: binomially distributed with a mean of 9 and a variance of 6. Find q =?

Q: Write down the alternative hypothesis and the null hypothesis of the experiment. Write down the…

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Q: The mean of a normally distributed random variable is always bigger than its standard deviation.…

A: FALSE.  Explanation: Generally, the mean of a Normal distribution is higher than the standard…

Q: let x be a random variable that represents the commute time of teachers in a large urban area. If x…

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Q: A certain machine makes electrical resistors having a mean resistance of 60 Ohms and a standard…

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Q: In a certain vaccination site, the service time for individuals before they were given a vaccine…

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Q: a person threw 10 dice 500 times and obtained 2560 times 4,5or 6.can this be attributed to…

A: For 10 dice 500 times roll we have total 500*10=5000 dices drawn, out of which 4,5, and 6 have 50…

Q: 4. Chris has a 1% chance of typing a word incorrectly. Find, to three decimal places, the…

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Q: The change in the weight for each of n = 5 rats subjected to some treatment has been recorded as: 0…

A: Let, X: The weight of rat subjected to some treatment. n = 5 Given data is, X 0 2.9 -2…

Q: Suppose only 40% of all drivers in a certain state regularly wear seatbelts. A random sampleof 400…

A: Given,n=400p=0.40mean(μ)=npμ=400×0.40=160standard deviation(σ)=np(1-p)σ=400×0.40(1-0.40)σ=9.79796

Q: If X is a normal random variable with a standard deviation of 10, then 3X has a standard deviation…

A: Given: X is a normal random variable with standard deviation equals to 10.

Q: The owner of an automobile insures it against damage by purchasing an insurance policy with a…

A: Let, X= repair costs X~U(0, 1500)   So, a=0 and b=1500   We have to find the standard deviation of…

Q: Suppose that the population mean flight time between cities 1 and 2 is 240 minutes with a population…

A: Given that.   X~N( μ , ?^2 )   μ=240     , ?=20   Z-score =( x - μ )/?

Q: Use the result of Exercise 45 to show that, if n independent random variables Xi have normal…

A: The mean is calculated as follows:

Q: A survey conducted by a food company in Flanders indicated that 37% of strawberry buyers could…

A: Given: p=0.37 Let, X~B(n,p) The probability distribution of the binomial distribution is given as…

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Q: A single observation of a random variable having an exponential distribution is used to test the…

A: A random variable X is said to follow exponential distribution if its probability density function…

Q: If the annual proportion of new restaurants that fail in a given city may be looked upon as a random…

A: Given data : ∝=1 , β=4

Q: Suppose that a randomly sampled GPA of STAT240 students are 2.8, 3.4 and 3.7 (n=3). The population…

A: a) The confidence interval for the population variance is (n-1)s2χα22≤σ2≤(n-1)s2χ1-α22 The level of…

Q: A researcher claims that a post-lunch nap decreases the amount of time it takes males to sprint 20…

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Q: A manufacturer receives a shipment of 500 spare parts from a supplier who claims that the lengths of…

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Q: A consumer organization inspecting new cars found that many had appearance defects (such as dents,…

A: Let X = the number of appearance defects on the selected car The probability distribution of X is,

Q: a certain machine manufactures electrical resistors that have a mean resistance of 40 ohms and a…

A: According to the given information in this question We need to find the probability that the…

Q: A pencil manufacturer claims that its pencils have lengths that are normally distributed with a mean…

A: From the provided information,

Q: A random sample of 25 students obtained a mean of 78 and a variance of s2 = 15 on a college entrance…

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Q: Suppose that families migrate to an area at a Poisson rate of 2 = 2 per week. If the number of…

A: Let Mi denote the number of people in the ith family, then we have;…

Q: In a recent poll, 35% of survey respondents said that, if they only had one child, they would prefer…

A: a. The mean and standard deviation are calculated as follows: Mean=np          =190×0.35…

Q: In a recent​ poll, 45​% of survey respondents said​ that, if they only had one​ child, they would…

A: (a) The probability that at least 84 would prefer a boy  is 0.1230 and it is obtained below: From…

Q: A manufacturer of metal pistons finds that on the average, 20% of his pistons are rejected because…

A: The binomial distribution is a discrete probability distribution in which there are a fixed number…

Q: The manager of a restaurant believes that waiters and waitresses who introduce themselves by telling…

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Q: In building materials laboratory, it has been observed that a failure proportion of concrete cubes…

A: The question is about prob. dist. Given : Failure prop. of concrete cubes ( p ) = 0.03 Total no. of…

Q: A certain machine makes electrical resistors having a mean resistance of 50 Ohms and a standard…

A: Given,sample size(n)=49mean(μ)=50standard deviation(σ)=3

Q: The change in the weight for each of n = 5 rats subjected to some treatment has been recorded as: 0…

A: Given : n = 5 data are 0 , 2.9 , -2 , 2.7 , 2.3

Q: Suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly…

A: The value of chi square test statistic is, 17.231 The degree of freedom is,

Q: In a population, a parameter called "parametus" has a value of 9. If the statistic estimating…

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