7. We consider case-sensitive alphanumeric passwords (there are 62 possible characters). (a) How many passwords with length 10 are there? (b) How many passwords of length 10 contain your (7 character) user name? Be sure to explain your answer. (c) How many passwords have length 8, 9, or 10 and do not contain your user name?

Q: Exercise 6. Suppose a random variable has support: {0, 1, 2,4} and its pmf is: X 0 1 2 4 f(x) 3/7…

A: Let X be a random variable with probability function (probability mass function or probability…

Q: I would like to ask why you subtracted 3-3 for question a should be 0?

A: From given data we have : mean μ=3Standard deviarion σ =2

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Q: In 1953, N. Keyfitz published a study in the American Journal of Sociology entitled, "A Factorial…

A: Given information, The number of children of women who were aged 15-19 when first married. Provide…

Q: Please hand write this and write small explanations.

A: It is given that the mean θ=2.5 milligrams per liter.

Q: /11% of a quantity is equal to what fraction of the​ quantity?

A: Given that Quantity = 311%   Percentage = 100   Fraction = 311100 Fraction = 311 x 100 = 31100

Q: Two cards are drawn at random from a pack of 52 cards.what is the probability that either both are…

A: no.of black cards=26no.of queen cards=4no.of balck queen cards=2Total no.of cards=52…

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A: The mean for the wear-out distribution is 500 thousand hours.

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A: Given events: A: The number rolled is odd B: The number rolled is less than 4. Outcomes for A are…

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A:

Q: Question 12 In a certain communications network the probability of an error in a single bit is…

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A: Given, A multiple choice test contains five questions

Q: In a simultaneous throw of two dice, what is the probability of getting a total of 7 ?

A: From the provided information, Two dice are thrown simultaneously. Total outcomes = 36

Q: The probabilities that a student will receive an A, B, C or D grade are 0.4, 0.3 0.2 and 0.1…

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Q: joint USA Today/CNN/Gallup Poll in July 2020 indicated that of 832 white adults, 46% thought…

A: Given n=832 P=0.46

Q: The quadratic regression equation y = –0.1x2 + 143.99x – 13,242.84 models expected company profits…

A: The quadratic regression equation y = –0.1x2 + 143.99x – 13242.84 models expected company profits in…

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A: Solution

Q: en the current Center of Disease Analytics statistics, the probability of having the flu in our area…

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Q: Exercise 4. (a) I play games of Monopoly against a computer. I play one game after another. Assume…

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A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: For two events, A and B, P[A] is; P[B] is and P[AB] is g. Determine the values of: P[AB]; P[AUB];…

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Q: Problem #8: A system consists of five components is connected in series as shown below. -12 3 4 5…

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Q: Suppose that one variable, x, chosen randomly uniformly from [U, 2], and another variable, y, is…

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Q: The investor chooses between shares of 20 companies, 8 of which are insurance companies, 5 are legal…

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Q: Question Find the odds and the odds against the event rolling a fair die and getting 4 or 6?…

A: Answer: The outcomes of the event of rolling a fair die is = {1,2,3,4,5,6} Number of outcomes = 6…

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Q: You have relatives coming for dinner this weekend.  The probability that your uncle Josiah will show…

A: given data  P(uncle josiah  show up)  = 0.38 P(aunt Beatrice show up) = 0.27 P(both show up) = 0.1…

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Q: Using mean = 63.6, SD=18.8, k=2. Use Chebyshev theorem to find our exact or estimates values.

A: Given information: Mean=63.6S.D=18.8k=2

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Q: A new AIDS prevention drug was tried on a group of 224 HIV positive patients. Forty-five patients…

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A: "Since you have posted a question with multiple subparts, we will solve first 3 sub-parts for you.…

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Q: Determine whether the given events A and B are independent. P(A) = .5, P(B) = .4, and P(AB) = .8. O…

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Q: From 6 positive and 8 negative integers, 4 integers are chosen at random and multiplied. Find the…

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Q: 75% of all U.S. adults use some type of vision correction. Suppose 1000 adults are surveyed about…

A: Given,n=1000p=0.75q=1-0.75=0.25mean(μ)=npmean(μ)=1000×0.75=750Standard deviation(σ)=npqStandard…