A shooter has 4 bullets. He shoots at the target until he hits it for the first time . And stop shooting if he shoot all four bullets. The probability that he can hits the target for each time is 0.7 . Let X be the number of bullets used. Find EX

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Q: A population of 2,800 students from a certain region have normally distributed National Examination…

A: Given,sample size(n)=35mean(μ)=89standard deviation(σ)=5

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A: Given that.   X~N( μ , ?^2 )   μ=210     , ?=16   Z-score =( x - μ )/?

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A: Given that  Number of people purchased washing machine in January = 40  Cost of washing machine in…

Q: the odds against the event happening?

A: here p = probability of event  = 88/89

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A: here take C = premium expected profit  = 1% of 200000 = php 2000 p(die during the year ) = 0.02 x=…

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Q: Suppose it is known that the mean and the standard deviation for a given population are 65 ar 8,…

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Q: Given a rice, 3 food (adobo, afritada, and tinola); 3 kinds of beverages (softdrinks, ice tea, and…

A: Given problem Given that   Given a rice, 3 food ( adobo, afritada, and tinola ); 3 kinds of…

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Q: If the sample size is n = 2 and the population variance is o =7.75, what is the variance of the…

A: NOTE-AS PER GUIDELINES I HAVE CALCULATED FIRST MAIN QUESTION ONLY

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A: We have given that Number of blue marbles = 8 Number of Red marbles = 10 Total number of marbles =…

Q: is Pira ch exercise and find your answer in the Code Key. Write the Te A. Find each probability if…

A: Note: According to Bartleby guidelines expert solve only one question and maximum 3 subpart of the…

Q: Suppose that 10 employees are to be divided among three jobs, with three employees going to job 1,…

A: Let us suppose there are three marbles viz. a red, a green and a blue. From these, there are three…

Q: 4 The mass of packages from a particular machine are normally distributed with a mean of 100g and…

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Q: A sample of 120is drawn from a population with a proportion equal to 0.69.   Complete parts ​a)…

A: Given,n=120p=0.69mean(μ)=npμ=120×0.69μ=82.8standard deviation(σ)=np(1-p)σ=120×0.69×(1-0.69)σ=5.06636

Q: Given a standard deck of 52 cards. A player will be dealt 5 cards. (a) FIRST COMPLETE THE TABLE OF…

A: The number of ways of selecting r objects from a group of n objects are Crn Crn = n!r!n-r!

Q: A. Determine whether or not the two events are mutually exclusive, write (ME) if mutually exclusive…

A: Two events are said to be mutually exclusive, if there are no common elements in those events.

Q: A true or false test consists of 10 questions. if all the questions are answered, in how many…

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Q: As the manager of a hedge fund, your yearly investment strategy entails a large “left-tail” risk…

A: As the manager of a hedge fund, your yearly investment strategy entails a large “left-tail” risk…

Q: Reading proficiency: An educator wants to construct a 99.8% confidence interval for the proportion…

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Q: Consider the following table. What is the probability that person uses social media frequently given…

A: Given that    Gen X Gen Z Total Use social media frequently often  30 70 100 Does not use…

Q: Lengths of metal rulers produced by a machine are normally distributed with a mean length of 30 cm…

A: Mean(µ) = 30Standard deviations (σ) = 0.1X ~ N (µ, σ )= N(30, 0.1)

Q: What is the probability that the city will be hit by a tornado next year?

A: Studies show that historically a certain city is hit by a tornado about once every 5 years. so here…

Q: 3 The mass of packages from a particular machine are normally distributed with a mean of 200g and…

A: Given that  X~Normal(μ = 200, ?2=9) μ = 200 , ? = 3

Q: Current Year Previous Year Occupied Rooms 1,505 1,411 Total Rooms 1,750 1,700

A: Solution:- from given information x1= 1505     ,n1=1750 x2= 1411     ,n2=1700 null hypothesis…

Q: Some fruit are sold whose weights follow a normal distribution such that X~N(80, 15) If the lightest…

A: 10) The mean is 80 and the standard deviation is 15.

Q: 21. How many ways may 5 students be seated in a row of 5 chairs for a pictorial?

A: Ans#  How many ways may 5 students be seated in a row of 5 chairs for a pictorial ?

Q: Suppose it is known that the mean and the standard deviation for a given population are 65 and 8,…

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Q: Show E(X²)

A: First we have to determine the marginal pdf of X tp calculate the value of E(X2).

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A: Given that  Total marbles=12 Yellow marbles=3 Red marbles=7 Blue marbles=2 Note: According to…

Q: 26. A card is drawn at random from a standard deck of cards. Find the probability of drawing 2 or…

A: Given that  There are 52 card in the deck in which they divided into two color i.e red(26) and black…

Q: 25. A pair of dice is rolled. What is the probability of getting a. a total of 6 or 8? b. a total of…

A: When a pair of dice is rolled then the sample space S={ (1,1) (1,2) (1,3) (1,4) (1,5) (1,6)  (2,1)…

Q: f seven fair coins are simultaneously tossed in the air, what is the probability

A: When a coin is tossed Probability of getting heads is =0.5 Probability of getting tails is =0.5 If 7…

Q: a) What is the minimum relative frequency of the number of heads for the first 10 tosses? 0 of b)…

A: b) Maximum relative frequency of the number of heads for the first 10 tosses is 1

Q: Evaluate each combination in column A, then match your answer in column B. A B 1. C(8,3) 2. С(15,4)…

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Q: 3 The following table shows information about students studying a particular course IFY IY1 Male…

A: Given that    IFY IY1 Total  Male 40 36 76 Female  51 24 75 Total 91 60 151

Q: Sarah and Tom both answer the question below. In a bag there are some black counters and some white…

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Q: cel File: data10-11.xlsx Sample 1 10 7 13 7 9 8 Sample 2 8 7 8 4 6 9 Compute the two sample means.…

A: From the given information we calculate confidence interval for two sample mean t test.

Q: Show Corr(X, Y)

A: Given the, joint pdf of X and Y: f(x,y) = 38(1 + x2 y) ,    0<x<1; 0<y<2 We need to find…

Q: h) What is the standard deviation of M - 63? i) What is the probability that M-63>0.51? 0.2483 )…

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Q: What is the probability that a. A camper entering the Camp Sinai is a cyclist? b. A cyclist entering…

A: here given, The probability that a cyclist in a bicycle entering the Camp Sinai is 0.12; the…

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Q: Your task is to identify the proposed analysis and why you chose that analysis for each of these…

A: Chi-square test of Goodness-of-fit allows us to conclude that possible outcomes are equally likely…

Q: OBABILITY | SM025 Every year two teams, Unggul and Bestari meet each other in a debate competition.…

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Q: There are two machines available for cutting corks intended for use in wine bottles. The first…

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Q: 1. In how many ways can 3 boys and 2 girls be seated in a row for picture taking if the boys would…

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

Q: A company manufactures panes of glass. The probability that a pane of glass has bubbles is 0.01. If…

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Q: Suppose that 11% of all steel shafts produced by a certain process are nonconforming but can be…

A: Given that n=200,p=0.11