84. An urn contains 3 one-rupee coins, 5 fifty paise coins and 12 ten-paise coins. If a coin is drawn at random, find the expected value of the draw, assuming that all coins are equally likely.

Q: What is the z value such that? 1. The area between z and -z is 0.9010 2. The area between z= -1.21 a...

A: here use basic of normal distribution

Q: When flipping two coins at the same time, there are a few different events that could occur. What ar...

A: Answer - Flipping two coins at the same time.              Then Sample space S = { HH, HT, TH, TT } ...

Q: For each of the following transition matrices, do the following: (1) Determine whether the Markov c...

A: Given the transition matrix P=0.2 000.800.5 0.5000.30.7 01000

Q: You wish to study whether or not a roofer should wear ear protection when using a particular nail gu...

A: The confidence interval is an inference process which gives the range of plausible values of the pop...

Q: In a survey of 2072 adults in a recent​ year, 734 made a New​ Year's resolution to eat healthier.   ...

A:

Q: Use the following data sets to construct two box-and-whisker plots. Then use the plots to compare th...

A: For the given data construct box plot and compare

Q: Calculate correlation coefficient from the following data : N= 10 , Σ X= 140 , Σ Υ-150 Σ (X-10)=180,...

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Q: The table shows the score obtained by applicants for secretarial position in a certain manufacturing...

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Q: Anna company sells coffee products to various customers. In recent years, profits have been declinin...

A: Given that the coefficient of determination for marketing expenses is  R2= 75% = 0.75 In this case i...

Q: Given a standard normal distribution, find the normal curve area under the curve which lies to the l...

A:

Q: Find out the quartile coefficient of skewness in a series where Q, 18, Q3 = 25, mode = 21 and mean =...

A: We have given that,   Q1 = 18, Q3 = 25, mode = 21 and mean = 18 Then,  We will find the quartile coe...

Q: A bag contains 2 white and 3 black balls. Four persons A, B, C and D in the order named each, draw o...

A:

Q: 2, 4, 4, 4, 4, 5, 5, 5, 6, 6, 7, 7, 8, 8, 8, 8, 8, 9, 10, 11, 11, 11, 11, 12, 13, 14, 15, 16, 16, 17...

A: Given:  A given data:2, 4, 4, 4, 4, 5, 5, 5, 6, 6, 7, 7, 8, 8, 8, 8, 8, 9, 10, 11, 11, 11, 11, 12, 1...

Q: Which of the following involves inferential statistics as opposed to descriptive statistics?   A A l...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: a. Find E[Xly] b. Find var[ Xly]

A: Here use given joint distribution of x and y 

Q: caiculate the mean deviation (from mean) of the following series : Marks 15 25 35 45 No. of students...

A:

Q: You are given that mean = 50, coefficient of variation = 40% and coefficient of skewness = - 0.4. Yo...

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Q: 1. Show that: 11 (*; - (*)*f; = (x*) – (x)² j=1 a. What is the assumption for f; for the above equat...

A: Let X be a discrete random variable such that X=x1, x2, …, xn. Then, the variance of the random vari...

Q: Example 25. The quarterly profits (in lakhs of Rs.) of three companies are Calculate their standard ...

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Q: Find out the quartile coefficient of skewness in a series where Q mean = 18. = 18, Q, = 25, mode = 2...

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Q: Results Correlation Matrix Correlation Matrix Year Level Stress Year Level Pearson's r p-value Stres...

A: Given:

Q: A manufacturer of apple phone charges claims that only 4% of his production is defective. In a rando...

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Q: A paint company has large outlet stores in two cities. Ten samples of the weekly sales (in tons) for...

A:

Q: A sample of 12 measurements of the lifetimes of flashlight torch gave a mean life of 7.38 years and ...

A:

Q: Let X denote the diameter of an electric wire and Y denote the diameter of the plastic casing that m...

A:  

Q: If X is a discrete random variable with the distribution function p(x) = 3-*; x = 1,2,3 ... Prove th...

A: Given that the distribution function of the discrete random variable X as px=3-x  ; x=1, 2, 3 ... .....

Q: Imagine you are interested in the effect of violence in the video games kids play and the level of a...

A: Given: One is interested in the effect of violence in the video games kids play and the level of agg...

Q: Illustration 16.76. A card is taken out from a well shuffled pack of cards. Events A, A2, Az and def...

A:

Q: Two groups of students reported mean weights of 162 kgs and 148 kgs respectively. When would the mea...

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Q: Suppose a researcher decided to test a hypothesis that adding compost to tomato plants increases mea...

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Q: lustration 11.6. Calculate coefficient of skowness from the data as follows.

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Q: Trevor is interested in purchasing the local hardware/electronic goods store in a small town in Sout...

A: Binomial distribution is given by  

Q: Price of eggs and milk: The following table presents the average price in dollars for a dozen eggs a...

A: For the given data Compute ( r ) = ?

Q: Consider the following hypothesis test. Ho: wS 12 Hai p> 12 A sample of 25 provided a sample mean x-...

A: We have given that  Sample size n = 25  Sample mean =14 Sample standard deviation =4.27 NOTE:- Accor...

Q: The number of orders received daily by an online vendor of used CDs is normally distributed with mea...

A: Solution

Q: Let x1, X2, ... , Xn be a random sample from a normal population with unknown mean µ and an unknown ...

A:

Q: 2. There are 5 blue balls and 7 yellow balls. Two balls are selected one by one without replacement....

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Q: Answer the following question by using a combination or a permutation. how many different ways can 3...

A: Combination:   It is nothing but the objects are being selected when the order of selection is not ...

Q: In conclusion, state the relationship between the mass of the spherical object and the distances the...

A: Keeping the distance relative to the ramp constant, it is observed that the knockback distance of ca...

Q: Write your solutions Given: |U| = 35 JANB|= 6 |ANBNC| = 2 |A| = 15 |ANC| = 6 |B|= 15 |BNC| = 5 |C| =...

A: Farmula used  |Ac⋂B|=|B|-A⋂B|   

Q: The following are the number of minutes used by 13 students in answering a particular problem in Sta...

A:        

Q: c = ___ n = _____  d. Skewness (3 decimal places) d .1 (Interpret the result) e. Q1 f. Q3

A: Here arrange given data in ascending order 

Q: he manager wants to find out the mean time required to inflate a rubber raft. Assuming that the mana...

A:

Q: Given the data, create a stem and leaf plot. Using the stem and leaf plot solve for the mean and med...

A: Given that  The data are X=12,13,21,27,33,34,35,37,40,40,41,56

Q: Find mean deviation of the distribution given below : 0 12 3 4 15 16 21 10 No. of accidents 7 8 9 10...

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Q: A telephone service representative believes that the proportion of customers completely satisfied wi...

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Q: Calculate the value of mode from the following data: Marks : 10 15 20 25 30 35 40 Frequency 8 12 36 ...

A: The frequency of observation  is maximum is called mode

Q: Find the probability that none of the selected adults say that they were too young to get tattoos.  ...

A: Let p be the probability that an adult who regret getting​ tattoos say that he/she was too young for...

Q: / Example 11. Find the mean deviation from (i) mean and (ii) median for the following daia: Marks : ...

A:

Q: - The length of time it takes college students to find parking spot at Kean University library parki...

A: Solution