How many students passed all three exams?

Q: The total number of hours, measured in units of 100 hours, that a family runs a vacuum cleaner over…

A: Introduction: Denote the random variable X as the duration (100 hours) for which a family runs their…

Q: e-Services Academic Departments ETC - CIMS - MUAYAD SI The following diagram represents the height…

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Q: I. Tell whether each of the following is a combination or a permutation. Write PE if each statement…

A: We have given that the statements about to the permutation and combination.     Note: According to…

Q: (2) Determine the areas under the normal curve given the mean of the distribution µ = 80 and o =…

A: Given Information: Mean μ=80 Standard deviation σ=5.5

Q: 16. The following table describes speed post rates from 1975 to 1987 Year: 1975 1976 1977 1978 1979…

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Q: 1. From a lot of 10 construction materials, 4 are selected at random and tested. If the lot contains…

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Q: 4. The distribution of the time until change (in days) of a Web Days until Changes 1.5 site is…

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Q: Example 27. The distribution of monthly wages (in Rs.) of 40 workers in a factory is given below:…

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Q: A large normally distributed population has a mean of 502 and a standard deviation of 25. If the…

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Q: In a county male height is normally distributed with a mean of 175 cm and a standard deviation of 6…

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Q: From a group of 7 men and 6 women, any five persons are to be selected to form a committee. In how…

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Q: Given that the outcome is a green ball, is it more likely than the ball was drawn from Bin 1 than…

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Q: Explain the Merits and Demerits of CDR (Crude Death Rate).

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Q: A swim team consists of 5 boys and 4 girls. A relay team of 4 swimmers is chosen at random from the…

A: Solution-: Given: Number of boys=5 and Number of girls=4    Total=5 (Boys) +4( girls)=9  A relay…

Q: Find E(Y)

A: For the given table E(y ) =?

Q: F. Find the median for the following distribution. Height (less than): 8. 11 14 17 20 23 26 No. of…

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Q: Example 22. Draw the histogram for the following data : Marks 0 - 10 10 - 20 20 – 30 30 – 40 40 – 50…

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Q: Example – 9: Suppose that R(t) = t e¬9t, t > 0 i) What is the MTTF ? ii) What is the expression for…

A: Given Information: Consider the given Reliability function:     Rt=te-9t   t≥0

Q: 7. Fit a straight line trend by the method of least squares to the following data. Year: 1989 1990…

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Q: The output below estimates the following regression Treat; = Bo + B1 · Female; + e; Based on the…

A: As the regression coefficient corresponding to female is 0.0051549 which much lower. Also from P…

Q: (2) Determine the areas under the normal curve given the mean of the distribution u = 80 and o =…

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Q: How many ways can 4 books be arranged on a shelf if the books are selected from a collection of 100…

A: Here we will use the concept of permutation Permutation = nPr = n!/(n-r)!

Q: 1. Some article studied the probability of death due to burn injuries. The identified risk factors…

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Q: Suppose a special type of small data processing firm is so specialized that some have difficulty…

A: Property of probability distribution function (pdf) :  ∫yf(y) dy =  1

Q: Given that the outcome is a green ball, is it more likely than the ball was drawn from Bin 1 than…

A: Let us define some events A : Bin 1 is selected. B : Bin 2 is selected. E : ball is green. The…

Q: What is the expected foreign exchange rate?

A: here given  The current foreign exchange rate is 1 USD = Php 45. Assuming that the probability that…

Q: Example 31. Plot Less than Ogive and More than Ogive for the following data: Cost of production 4- 6…

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Q: Suppose that during COVID the unemployment rate is 23% (i.e. the probability of being unemployed is…

A: We have given that  The random variable X i.e, unemployment follows Binomial distribution with…

Q: Roll 3 dice 40 times and record how many 2’s you get each time. Make a tally and work out the…

A: The frequency of each class is obtained by counting the number of times each data point appeared in…

Q: The weight of male contestants is normally distributed with a mean of 90 kg and a standard deviation…

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Q: The proportion of impurities per batch in a chemical product is a random variable X with density…

A: Obtain the mean of the proportion of impurities in a randomly selected batch of chemical.   The…

Q: 3. Below is the preference schedule for an election where the winner is determined by single runoff.…

A: Voters and choices given We have to calculate winner by using runoff method.

Q: Find Cov(X, Y)

A: Covariance: It is a statistical measure used to establish a relationship between two random…

Q: Two hundred pre-engineering students have their midterm grades in the statistics, assuming normally…

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Q: Example 6. The quality control manager of a tyre company has sample of 100 tyres and has found the…

A: We have given that,  Sample mean (x̄) = 30214, Population standard deviation (σ) = 860, sample size…

Q: Binomial Probability Find the probability of each event. 1) A basketball player has a 60% chance of…

A: Given that ; P = 60%  n = 6 X = 3 By using binomial distribution we solve this problem.  Note:…

Q: The probability that a birth will result in twins is 0.025. Assuming independence (perhasph not a…

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Q: At a college, 24% of all students are taking a course in solar design, 38% are taking a course in…

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Q: harity draw öf opportuty Win a sponsored spot-prize. A tickets and 10 gold tickets. If a person…

A: Tickets Count Black 80 Gold 10 Total 90 A person gets a Gold ticket will draw a Spot Prize.…

Q: Consider the following. (Give your answers correct to four decimal places.) (a) Find P(-2.1 < z <…

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Q: Jack wrote a 10-question multiple choice quiz. Each question has five possible choices. What is the…

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Q: How many ways are there that his mother can get 5 games? B. How many ways are there that his mother…

A: A young boy asks his mother to get 5 Game cartridges from his collection of 10 arcade and 5 sports…

Q: president, a treasurer and a secretary are to be chosen in an organization having 30 members. How…

A: 30 members, President, a treasurer and a secretary are to be selected.  If a certain group of 3…

Q: Which of the following is not true about a distribution's shape? It the mean is much less than the…

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Q: person's level of blood glucose and diabetes are closely related. Let x be a random variable…

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Q: (b) Let the continuous random variable X has probability density function as follows, (k(x+2)², -2<x…

A: For the given data Find ( i ) K= ? ( ii ) P (-1&lt;=x&lt;= 1 ) = ?

Q: Use regression to find a quadratic model for the given data. (Round the terms to four decimal…

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Q: Example 22. A piece of equipment cost a certain factory Rs. 6,00,000. If it depreciates in value,…

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Q: You are looking for an investment opportunity that will provide a yield of at least 10%. You…

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Q: In how many different ways can the letters of the word 'LEADING' be arranged?

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