If on an average 8 ships out of 10 arrive safely at a port, find the mean and standard deviation of the number of ships arriving safely out of a total of 1,600 ships.
Q: The standard deviation of (1,9,8,4) is approximately what?
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A: Given data: If average weight for cats = 12 pounds standard deviation = 2 pounds. To find: 68% of…
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A: INTRODUCTION : To measure the variability of which series is consistent than any other then the…
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A: It is given that that µ=63 mile per hour. Obtain the standard deviation of the speeds of all cars:
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Q: If the mean of a list of numbers is 16.7 and the standard deviation is 0,
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A: Let X be a random variable of normal distribution with mean 120 and standard deviation 25. Let Z be…
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A: GivenMean(μ)=62standard deviation(σ)=10
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A: Solution: It is given that a computer programmer in Portugal who makes $809.40 has a z-score of…
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A: Any assumption about the parameter or probability function is called a hypothesis. Given data are…
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A: Given the probability of a defective bolt is, 0.1 That is, p=0.1 The total number of bolts is, n=400…
Q: The standard deviation of (1,9,8,4) is approximately?
A: Given Information: 1,9,8,4
Q: Suppose that the mean of a set of data is 50.2 and the standard deviation is 4.2. Assume that the…
A: Given μ=50.2, σ=4.2, h=5.1 We want to find the new mean and standard deviation.
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Q: The arithmetic mean and the standard deviation of a set of 9 items are 43 and 5 respectively . If an…
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Q: If the average weight for cats is 12 pounds and the standard deviation is 2 pounds. 68 percent of…
A: Given, mean = 12 standard deviation = 2 Need to find the area of the Normal curve covering 68% of…
Q: Give two situations in which comparing two population standard deviations would be important
A: Two situations in which comparing two population standard deviations would be important is obtained…
Q: If the mean height of bonsai trees is 42 cm and 95% of the trees are between 12cm and 72cm. The…
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Q: If a variable has a mean of 53, a median of 62, and a standard deviation of 4, What is its skewness?
A: The formula to find skewness is given below:
Q: The speeds of cars traveling on UK motorways are normally distributed with mean 96 kilometers per…
A: We have given that. X~N( μ , ?^2 ) μ =96 , ? = 10 Z-score =( x - μ )/?
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A: Introduction: The minimum age of a textbook is 1.3 years. The maximum age of a textbook is 7.9…
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A: We have to draw bell shaped curved and marking location of the mean and standard deviation..
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A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…
Q: 21 year old men rates at rest are normally distributed with a mean of 70 beats per minute, and a…
A: Given that 21 year old men rates at rest are normally distributed Mean (μ)=70 beats per minute…
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Q: In a recent survey, 80% of the community favored building a police substation in their neighborhood.…
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Q: A recent study found that 69% of all adults over 50 wear sunglasses for driving. In a random sample…
A: Formula : Mean = np Standard Deviation :
Q: What is the standard deviation of a ribution that has a mean of 46.2 if a FORMANCE value of 28 is…
A: Given information: The mean of the distribution is µ = 46.2 The performance value is x = 28. The…
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A: Given that The Standard deviation is 5
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A: Given problem is a binomial distribution with:
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Q: 2.5% Of scores on a normally distributed college entrance test or below 60% and 2.5% of the scores…
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Q: A history class has 75 members. If there is a 12% absentee rate per class meeting , find the…
A: Given data P(absent) = p = 0.12 So q= 1-p = 0.88 Sample size (n)= 75 X = no. of student absent We…
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Q: Suppose a car driven under different conditions gets a mean gas mileage of 40 miles per gallon with…
A: Given data: The mean value is μ=40 miles per gallon. Standard deviation is σ=3 miles per gallon.
Q: Find the range and standard deviation of the set of data. 10, 8, 7, 13, 17 -
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Q: If a normally distributed group of test scores have a mean of 70 and a standard deviation of 12,…
A: It is given that the mean is 70 and the standard deviation is 12.
Q: freedom, the standard devi
A: yes , standard deviation of population is estimated without the degree of freedom . We know that…
Q: for a population with a standard deviation of 8 and mean of 40, draw a bell shaped curve, marking…
A: Given data Mean = 40 and standard deviation= 8
Q: A population has μ = 50 and σ = 5. If 10 points are added to every score in the population, what are…
A: Consider, (µ) = 50 and (σ) = 5 Let, X be the scores of the population. If 10 points are added to…
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