A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 4% margin of error at a 95% confidence level, what size of sample is needed? When finding the z-value, round it to four decimal places. Hint: Video [+]

Q: Problems 1. Consider a discrete random variable X with the following pmf: 1 x = 1,2,..., Px(x) = x(x…

A: * SOLUTION :-

Q: Two dice are rolled, find the probability" that the sum is less than 5

A: if two dice are rolled than the possible outcomes…

Q: ANSWER WITH COMPLETE SOLUTION The number of typing errors on a page follows a Poisson distribution…

A:

Q: use the beta function to compute P(3<Y≤5).

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Q: 4. Let X₁, X₂,..., X, be mutually independent and identically distributed random variables with…

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Q: Please use a tree diagram or listing method to find the probability of the following 1.) When two…

A: As per our guidelines we are suppose to answer only one question. If a coin is tossed two times than…

Q: A businessman has two meetings in a day. The first meeting has a 65% chance to make a sell, and he…

A:

Q: Ex7: Suppose that X has an exponential distribution with λ = 2. Determine the following: a/ P(X ≤0)…

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Q: Assume Z=X+√Y where PMFS Px(x) and Py(y) are defined as 0.7, y = 16 [0.6, x = 10 x=30 Px(x) = {0.4,…

A: Solution: From the given information,

Q: Binomial Distribution Calculatc Ayla Ozturk HW Score: 62.5%, 5 of 8 points Question 6, 6.2.35-T Part…

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Q: The distance x, in feet, between successive cars on a certain stretch of highway has the following…

A: To find: The probability that the distance between two successive cars  chosen at randomis 55ft or…

Q: Warren Tan plans to invest $10,000 in Company A. He is contemplating buying Company A's shares or…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The odds in favour of River passing her swimming test on the first try are 13:4.  The probability…

A: Given: The odds in favor of River passing her swimming test on the first try are 13:4

Q: Mr. Foster is a librarian at Central Library. In examining a random sample of the library's book…

A: The number of books had no damage (x) is 814.

Q: 2. An emergency committee consisting of 12 health's officer staffs is chosen from 10 doctors and 12…

A:

Q: In an experiment where 2 balls are drawn successively at random without replacement from a box…

A: Given Information: A box contains 2 Red, 3 Green, and 2 Blue balls. Two balls are drawn at random…

Q: In Drumheller, Alberta, the town host an annual parade on July 1st to celebrate Canada Day. The…

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Q: irst column on the histogram not be at a frequency of 3? Would you please now answer the remaining…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: mean of 0.4 micrometer and standard deviation of 0.15 micrometer. The line width of for…

A: Followings are the Explanation of the question Use the Normal approximation method μ=  0.40 σ=0.15…

Q: A-The mean of the flow? B- The stand. Dev. of the flow?

A: here given  ,   the river flow exceeds 2000 m3/sec is 15%  CV = 0.20  = σμ

Q: 2) - Consider Three g The other either four with all 6 four S them Six-Sided are one number odd…

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Q: The average number of classic comic books sold per week at your store is 28. What is the probability…

A: Given : mean , μ= λ = ( 28*3)/7 = 12

Q: If the average yield of a dunum of yellow corn is 800kg, with a standard deviation of 40kg Assuming…

A: Given,mean(μ)=800standard deviation(σ)=40

Q: Use the following information to answer the next question. A committee of 3 people is to be randomly…

A: Given data: Total people  = 8 3 people is to be randomly selected , including  Sarah. To determine:…

Q: 03: The effective life of a component used in a jet-turbine aircraft engine is a random variable…

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Q: Show that the function defined satisfies the properties of a pmf. Show that the formula (4.1) of…

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Q: Generate the forecast values for the last two (2) quarters of year 6.

A: HERE given  trend equation Tt  = 7.961 + 0.03 t

Q: 1. In an experiment where 2 balls are drawn successively at random without replacement from a box…

A: To find: The probability that none is red balls

Q: A physicist claims that the average wind speed in a certain city is 8 miles per hour. A sample of 33…

A: Given information: n=33x=7.9μ=8s=0.6α=0.10

Q: According to the textbook, it is reported that 85% of Asians, 78% of white, 70% of Hispanic, and 38%…

A: Event is the experiment that explain all the observations in the sample. Probability is the measure…

Q: A local government official observed an increase in the number of individuals with cardiovascular…

A: Given data indicates the weight loss (in kgs) of participants after completion of the program. The…

Q: A businessman has two meetings in a day. The first meeting has a 65% chance to make a sell, and he…

A: Given information: n1=15000p1=0.65n2=35000p2=0.35

Q: if the scores of samples of students are 11 12 10 11 16 11 15 (a)15 (b)11 (c)10 then mode is :

A: Given Data 11,12,10,11,16,11,15

Q: 1. A weighted die is tossed 30 times.  The probability of rolling a 6 with this unfair die is 0.25.…

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

Q: The guidance department has reported that of the senior class, 4.3% are members of Key Club, K, 7.6%…

A: Here, P(K) =0.043 P(P) =0.076 P(Both)=0.019

Q: let f(x)= X be 1 213 (-√5 < X<√) Y.V Pind P{/X/7/1.5},

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Q: 9. One merchant has seven Asava horses (A), a second has nine Haya horses (H), and a third has ten…

A: Given, One Merchant has seven Asava horses (A), a second has nine Haya horses (H) and third has ten…

Q: qn: A company is working on two independent projects P and Q. There is a 70% chance of finishing…

A: Given  P and Q are independent P(P)=70%=0.70 and P(Q)=60%=0.60 Result: If P and Q are independent,…

Q: Find the cumulative density function for the given probability density function. 1 f(x) = 4 for 4…

A:

Q: ple of women's heights was taken. Their heights (in inches) are defined by the following probability…

A: Given: fx=0.0825x-5.0325         61≤x&lt;65-0.0425x+2.9325      65≤x&lt;69

Q: Determine the probability that the interval between succeeding messages is more than an hour.

A: On the day before an exam in an online class, students e-mailed questions to the professor at a rate…

Q: If a player randomly answer a five questionnaires with five possible choices on a each question,…

A: It is given that  The random variable X i.e, correct answer follows Binomial distribution with…

Q: The number of typing errors on a page follows a Poisson distribution with a mean of 6.3. a. P(x=6)…

A: Here Given for No of typing errors on a page Follows Poisson distribution with mean =λ= 6.3 So  Here…

Q: 3. A random variable that can be used to find a 0.954 confidence interval for u, the mean of the…

A:

Q: a. 5 doctors and 7 nurses. b. not more than 6 doctors. c. at least 3 doctors and 4 nurses.

A: here given , there are total 10 doctors and 12 nurses , here use counting principle

Q: 3. Find the mean, variance, and standard deviation of X. The proportion of people who respond to a…

A: Obtain the mean of X. The mean of X is obtained below as follows: From the information, given the…

Q: several pows are told by the king of enemies that they will put to sleep by injection and the next…

A: Find a way to ensure that the vast majority of the pows survive.

Q: 2. A vaccine is found to be 85% effective in preventing a certain disease. The vaccine is given to…

A: Let p be the proportion of effective in preventing a certain disease n=number of people to given…

Q: Find the covariance of X and Y. The fraction X of male runners and the fraction Y of female runners…

A: Given,f(x,y)=4xy; 0&lt;x,y&lt;10; elsewhere

Q: A water bottling facility has a mean bottling rate of 34.I thousand bottles per hour with a standard…

A: Given information: For Water bottling facility, Mean bottling rate (μ1)=34.1/hourS.D(σ1)=2.13Water…