What is the marginal probability of a respondent's most commonly used type of phone not being a landline? * The table shows data about what type of phones that adults use.

Q: To illustrate the effects of driving under the influence (DUI) of alcohol, a police officer brought…

A: The confidence interval is the range of value, in which the unknown parameter lies. It consits of…

Q: Machine A is later found that it will produce 2 defective toys per hour. According to the most…

A:

Q: The number of accidents on a US -131 highway average 4.4 per year. Assuming that the number of…

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

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Q: Suppose that, in fact, the total cholesterol level of all men aged 20–34 follows the Normal…

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Q: What is the probability of the 7th car exiting within 20 seconds?

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Q: Based on the F obtained which is the amount of variability among the means expected by chance? Is it…

A: Introduction: It is required to identify the quantity that provides the amount of variability among…

Q: Now consider the random variable that is the average number of dots after four rolls. Is this…

A: Central Limit Theorem for mean: If a random sample of size n is taken from any population having…

Q: A statistician has analysed the duration of audience laughter after a stand up comedian's jokes. The…

A:

Q: What is a marginal probability function

A: Probability distribution

Q: what is a gaussian distribution?

A: Gaussian distribution (also known as normal distribution) is a bell-shaped curve, and it is assumed…

Q: Fifteen percent of all resumes received by a corporation for a management position are from women…

A: i) There are 18 resumes received on a particular day and 15% of the resumes received by a…

Q: What are the requirements needed to be a binomial distribution?

A: To find: What are the requirements needed to be a binomial distribution?

Q: What is the moment generating function of the sample mean?

A: Mgf (i)Sample mean=x⏞=Σxin=x1+x2+..+xn10…

Q: A traffic light is set to switch from red to green according to a uniform distribution with a mean…

A: The cumulative density function for uniform distribution is  F(X)=x-ab-a The mean of uniform…

Q: A magazine reported that 6 percent of all drivers talk on their cell phone while driv If 300 drivers…

A: Given data, p=6% =0.06 n=300 P(0.04<X<0.07)=?

Q: A random variable that can be used of the gamma distribution is

A: Random variable can be α=4,β Mean and variance can be, E(X)=αβ=4βVar(X)=αβ2=4β2 Size of sample is…

Q: The weekly salaries of teachers in one state are normally distributed with a mean of $490 and a…

A: Let X denote the weekly salaries of teachers. Given that X follows Normal(mean = 490, SD = 45) Then…

Q: While Tom Brady played until the age of 44 in the NFL, it has been documented that NFL players’…

A: Given: μ=33σ=2   Note: According to the guidelines, only 1st three subparts are solved.

Q: The number of cracks in a section of interstate highway that are significant enough to require…

A:

Q: What is the median of a continuous random variable? What is the median of an exponential…

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Q: Suppose the distribution of soccer players’ retirement age is N (30, 3). The soccer player Andrea…

A: The mean and standard deviation of NFL players are 33 and 2, respectively.

Q: Last Fall Semester, 36% of freshmen who applied for football season tickets did not receive tickets…

A: Obtain the probability that more than 40% of those sampled did not receive tickets for all home…

Q: If 28 helmets were randomly selected to be tested, find the probability that the crack pressures…

A: Let M denote the mean crack pressure for sample of size n = 28, then M follows N(mean = 150, SDM =…

Q: A manufacturer of a lightbulb claimed that its lightbulbs have a mean lifetime of 700 hours with a…

A: Given Mean=mu=700 Standard deviation=sigma=120 n=144

Q: Based on historical data, your manager believes that 26% of the company's orders come from…

A:

Q: The number of traffic accidents that occur on a particular stretch of road during a month follows a…

A: Given,The average no.of accidents in a month is 8.4so the average no.of accidents will occur in two…

Q: that the distribution is normal. What is the chance that three indoor cats die between 15 and 18…

A: here mean= 14 year standard deviation  = 2.5 year

Q: What is the binomial distribution?

A: The binomial probability distribution is a discrete probability distribution in which the outcomes…

Q: In a recent survey, approximately 90% of U.S. adults own a cell phone. Let's assume this can be…

A: Given Information :  In a recent study , approximately 90% of US adults own a cell phone . Lets…

Q: if 31% of the 18 to 29 years olds are invested in the stock market,how many 18 to 29 year olds must…

A: Given that, 31% of the 18 to 29 years old are invested in the stock market.

Q: A well-mixed cookie dough will produce cookies with a mean of 6 chocolate chips apiece. What is the…

A: Given problem is poisson distribution Mean=6

Q: To illustrate the effects of driving under the influence (DUI) of alcohol, a police officer brought…

A: Given data :

Q: The probability of failing to reject the null hypothesis when it is true is also called the…

A: here use basic of hypothesis testing

Q: The average time to recycle an e-waste is between 18 to 42 minutes following a uniform distribution.…

A:

Q: What probability with the average of nine randomly selected individuals from the normally…

A: Given: Population mean(μ)=48 Population variance(σ2)=64 Population standard deviation=σ=64=8 Sample…

Q: Use this information about the overhead reach distances of adult females: µ = 205.5 cm, σ = 8.6 cm,…

A: Consider X be the random variable that represents the overhead reach distances of adult females…

Q: We suppose that the weight of men follows a normal distribution whose parameters are 80 kilos and 15…

A: Here, µ=80 and σ=15.

Q: A statistician has analysed the duration of audience laughter after a stand up comedian's jokes. The…

A: Let X be the duration of laughter that is uniformly distributed between 3.1 and 10.8 seconds. Thus,…

Q: A random sample of size 100 is taken from a normalpopulation with σ = 25. What is the probability…

A: Suppose a random variable X follows normal distribution with mean µ and standard deviation σ. Then…

Q: Which discrete distribution has a difference between their means and variances equal to zero?

A: Here identifying distribution in which mean and variance are equal

Q: For the midterm scores of 250 MTH281 students last semester, the mean is reported as 62 and the…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: To illustrate the effects of driving under the influence (DUI) of alcohol, a police officer brought…

A: The data shows the nine teenagers time required to bring the vehicle to bring the vehicle to stop…

Q: A recent 10-year study conducted by a research team at the Great Falls Medical School was conducted…

A: "Since you have posted a question with multiple sub-parts, we'll solve the first three sub-parts for…

Q: To illustrate the effects of driving under the influence​ (DUI) of​ alcohol, a police officer…

A: a). This is a good idea in designing the experiment because it controls for any​ "learning" that may…

Q: Describe the procedures on how to use the normal probability distribution?

A: The normal probability distribution is basically used when there is a need to find the probability…

Q: A statistician has analysed the duration of audience laughter after a stand up comedian's jokes. The…

A: It is example of uniform distribution.

Q: Is the expected value (mean) of the probability distribution of a random variable always one of the…

A: Expected value of a discrete random variable is given by

Q: Is the random variable given in the accompanying table discrete or continuous? Explain.

A: Given information: The data represents the probability distribution table for the variable X =…

Q: It is reported that American adolescents spend an average of μ =4 hours per day using smart phone (σ…

A: According to the provided information, μ =4 σ = 2