The mean of a normal probability distribution is 440, the standard deviation is 8 a. About 68% of the observations le between what two values?

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Q: The following table gives the classification of 100 workers according to sex and the nature of work.…

A: Given:   Skilled Unskilled  Male  40 20  Female  10 30

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Q: Obtain an exponential function in the form f(t) = Aert. HINT [See Example 5.] f(t) is the value…

A: We have given that A = 9000  r = 17% = 17/100 = 0.17

Q: In a lottery game, a single ball is drawn at random from a container that contains 25 identical…

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Q: We roll a die 72 times. Approximate the probability of getting exactly 3 sixes with both the normal…

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Q: Question 3 The average score of all sixth graders in school District A on a math aptitude exam is 75…

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A: According to the given information, we have Data table is given.   A B C Total Senior 15 5 2 22…

Q: depth is between 1 mm and 2 mm.

A: From given data: Mean =μ=0.353 Standard deviation =σ=0.754

Q: As shown above, a classic deck of cards is made up of 52 cards, 26 are black, 26 are red. Each color…

A: 1) The classic deck has 52 cards.

Q: 5. Answer the following for the random variable X whose density function is f(x). f(x) =…

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Q: DI D2 D3 D4 D5 59 920 Question 1: Discrete random variables Let X be a discrete random variable with…

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A: If the experiment is repeated until we get one success, they follow geometric distribution. It has…

Q: 2. Eight travelling agencies booked a tour to the United State. There are 25 major cities to visit.…

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Q: Apple produces about 300 iPads every hour at their factory in Silicon Valley. On average, about 2.5…

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Q: A fair coin is tossed three times and the events A, B, and C are defined as follows:   A: \{ At…

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Q: You claim that the proportion of students who favored ONLINE ASSESSMENT over FACE-TO-FACE ASSESSMENT…

A: Given the proportion of students who favoured ONLINE assessments over FACE TO FACE assessments is…

Q: 5. An automobile dealer has found that X, the number of cars customers buy each week, follows the…

A: The given function is: f(x)=kx2x!,x=1,2,3,40,       Otherwise

Q: Question 10 Consider two continuous random variables X and Y, whose joint probability distribution…

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Q: DI D2 D3 D4 D5 599 20 p(x) = Question 1: Discrete random variables Let X be a discrete random…

A: Given the valuesD1=5D2=9D3=9D4=2D5=0 The probability mass function is shown…

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Q: Question-5 uniform A packaging line consistently packages cartons. After weighing every package…

A: Given,A random variable X~Uniform(18.2 , 20.4)f(x)=120.4-18.2f(x)=12.2       ;   18.2≤x≤20.4

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A: Let us define some events A : a bulb is from Box I B : a bulb is from box II C : a bulb is from box…

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Q: 1. Test the hypothesis that the random sample 12-1 12-3 118 119 12.8 12.4 came from a normal…

A: Given that,        μ0=12.0        σ=0.4        n=6  1-α=0.95 The random samples are 12.1, 12.3,…

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Q: There is 50% chance of a recession next quarter. Given that there is a recession, Kate believes…

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A: Probability is the measure of chances. It takes the values between 0 to 1. It never takes negative…

Q: A bag contains 10 beads -- 2 black, 3 white, and 5 red. A bead is selected at random.  The…

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Q: Let X be a continuous random variable with uniform distribution, and with A = 36, B = 81. What is…

A: GivenA random variable X~U(36,81)f(x)=181-36f(x)=145    ;   36≤x≤81

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Q: A test market study of the potential demand for the product is expected to report either a favorable…

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Q: the asnwer is wrong can it be re done

A: Giving a test to a group of students, the results are summarized in the table:-   A B C Total…

Q: An experiment involves 30 participants. From these a group of five participants is to be tested. How…

A: From the provided information, An experiment involves 30 participants from which a group of five…

Q: A family is going on a road trip. There are 16 tourist attractions on their way. The probability…

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Q: Let X denote the time (in hours) that a student study for the exam. The probability density function…

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Q: b. In proof testing of circuit boards, the probability that any particular diode will fail is 0.01.…

A: It is given that, the probability that any particular diode will fail is 0.01.  Sample size is n=…

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Q: 5. An elementary school principal wants to show that there is no relationship between a student's…

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Q: At a temperature of 25°C, the resistances of a type of thermistor are normally distributed with a…

A: At a temperature of 25°C, the resistances of a type of thermistor are normally distributed with a…

Q: I pick 2 cards out of a deck, replacing the first one before I pick the second. What is the…

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Q: A bridge has caused a lot of accidents. A rough statistics shows for every 100,000 vehicles passing…

A: Given information: Statistics shows that for every 100,000 vehicles passing by the bridge, 3 of them…

Q: Based on the Nielsen ratings ,the local CBS affiliate claims its 11 p.m newscast reaches 43% of the…

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Q: The rate of auto thefts triples every 5 months. (a) Determine, to two decimal places, the base b for…

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Q: (iii) If X and Y are two discrete random variables, then E(X + Y) = E(X) + E(Y) provided E(X) and…

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Q: In a horse race, how many different finishes among the first 3 places are possible if 18 horses are…

A: here given, Total 18 horse running we need different finish among top 3 . so here order is imporant.…

Q: If A and B are two mutually exclusive events with P(A)= 0.5 and P(B)=0.4, find the following…

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Q: A catering service offers 6 appetizers, 10 main courses, and 8 desserts. A banquet committee is to…

A: Solution: Given information: Appetizers = 6 Main courses = 10 Desserts = 8 We wan to find the number…