A. The length of a statistics class taught by a particular professor is uniformly distributed between 45 and 55 minutes long. What is the probability that a class lasts longer than 49 minutes?

Q: What is the probability that the production machines will be adjusted if the batch consists of 70…

A: Acceptance sampling is an important quality control technique, where a batch of data is tested to…

Q: The number of accidents that occur at a busy intersection is Poisson distributed with a mean of 4…

A: given data poisson distributionμ = 4 per week λ= 47 per dayx =  no. of accidents in t daysP(x=X) =…

Q: Suppose that the number of car accidents per day in Wilmington, NC has been recorded for the past…

A:

Q: b. If a sample of 25 employees is chosen at random, what is the probability that their average…

A: Answer:- Given, Mean (µ) = 5.7  And standard deviation (σ) = 1.8 Using formula, Z-score= (X- µ)/σ…

Q: The average height of all the workers in a hospital is known to be 66.7 inches with a standard…

A: Let  X be the random variable from normal distribution with mean (μ) = 66.7, standard deviation (σ)…

Q: A company takes a random sample of 60 salespeople and measures the yearly average amount of money…

A: Given that the overall average amount for the company is $500,000 with a standard deviation of…

Q: A regional director responsible for business development in the state of Pennsylvania is concerned…

A: If we are looking at the occurrence of an event over a certain interval, especially an interval of…

Q: A company is studying the number of monthly absences among its 125 employees. The following…

A:

Q: 6) A sports announcer researched the performance of baseball players in the World Series. The random…

A: Given:    Hits          0         1          2        3         4         5         6      7…

Q: mpany chaiges $227 Iul a $30,C ice policy 1or a 30-year the year is 0.9969. Assume that the company…

A:

Q: A team of researchers obtained a z-score for their sample that was z= 0.50. If they were conducting…

A: The  z-score for their sample that was z= 0.50. The level of significance is α=0.05 The probability…

Q: 4. The probability model of the number of dinners that a typical American cook in a week is as…

A: Solution: The probability model of the number of dinners is  NUmber of dinners (x)  0 1 2 3 4 5 6…

Q: About 54% of people who are murdered knew the person who committed the murder. Suppose that…

A: X~Bin(n=58, p=0.54)

Q: he number of accidents that occur at a busy intersection is Poisson distributed with a mean of 4 per…

A: Given,  number of accidents per week (lamda)=4   Poission distribution is P(X=x)=e-lamda*lamdaxx!

Q: The table shows the estimated distribution of injury severity by child passenger. What is the…

A: Given data: Injury severity <1 Year 1 to 3 Years 4 to 7 Years Row total No injury 545786…

Q: Find the expected value and standard deviation of the number of newspapers published in these large…

A: Let X be the random variable of the no. of daily newspapers published in large cities. The prob.…

Q: with a standard deviation of 15 points, while Barbara has a mean score of 191 points, with a…

A: It is given that  Data 1 for Anna: X1 ~ N( 184, 15 )   Data 2 for Barbara: X2 ~ N( 191, 18 )

Q: The average time spent by a car salesman each weekend is normally distributed with a mean of 12.5 hr…

A: Given Information: Meanμ=12.5hrS.Dσ=3hr

Q: 1. In a certain student population, incomes are normally distributed with a mean of $1000 per month…

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Q: he agency for healthcare research and quality reported that 53% of people who had coronary bypass…

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

Q: Incomes in a certain town are strongly right-skewed with mean $40,000 and standard deviation $8,000.…

A: