A company is in the business of finding addresses of long-lost friends. The company claims to have a 70% success rate. Suppose that you have the names of eight friends for whom you have no addresses and decide to use the company to track them.   a) Find the mean and standard deviation of this probability distribution. What is the expected number of friends for whom addresses will be found? (Round your standard deviation to two decimal places.) ? = friends ? = friends b) What is the smallest number of names would you have to submit to be at least 96% sure that at least two addresses will be found? (Enter your answer as a whole number.) names

Q: If the probability that a randomly chosen college student takes statistics is 0.16, then what is the…

A:

Q: A police department reports that the probabilities that 0,1,2,3 burglaries will be reported in a…

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Q: The probability that an individual is​ left-handed is 0.130. In a class of 25 ​students, what is…

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Q: You randomly select 25 teachers. What is the probability that their mean salary is more than $70000,…

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Q: SOLVE STEP BY STEP IN DIGITAL FORMAT XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 3. Cables manufactured for…

A: normal distributionμ=0.13σ=0.005specification : 0.12 <x< 0.14

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Q: Suppose that 69% of people own dogs. If you pick two people at random, what is the probability that…

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Q: The table summarizes results from 987 pedestrian deaths that were caused by autornobile accidents.…

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Q: A test is conducted in a high-risk area during a pandemic. Of the 20 people who were tested, 7 are…

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Q: If the probability that a vaccine you took will protect you from getting the flu is 0.972, what is…

A: It is given that the probability that a vaccine will protect a person from getting the flu is 0.972.

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Q: The amount of time, in seconds, a cashier spends with a customer during lunch time at a fast food…

A: The average amount of time spent with a customer is 160 seconds.

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A: Given data, p=45%=0.45 n=120 P(p>0.42)=?

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A:

Q: High school girls average 80 text messages daily. Assume the population standard deviation is 15…

A: Given information:

Q: For each part below, suppose a real number is picked according to the above probability…

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Q: The following table summarizes data on 976 pedestrian deaths that were caused by accidents. If one…

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Q: The probability that a person living in a city owns a pet is estimated to be 0.2. Find the…

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Q: The probability that an individual is​ left-handed is 0.190. In a class of 27 ​students, what is…

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Q: If the probability that a randomly chosen college student takes statistics is 0.34, then what is the…

A: The probability that a randomly chosen college student takes statistics is 0.34. The probability…

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A: Multiplication rule is : P(A and B)=P(A)*P(B) Given data is : Driver  intoxicated Pedestrain…

Q: Suppose that the life span of a certain automobile tire is normally distributed, with μ = 25, 000…

A: Let X denote the life span of a certain automobile tire.Given that X follows a normal distribution…

Q: The driving time between Toronto and North Bay is found to range evenly between 195 and 240 mins. a.…

A: The given distribution is uniform distribution. X~U(a=195,b=240) Then, a. P(driving time≤210)=?The…

Q: If the probability that a vaccine you took will protect you from getting the flu is 0.016 , what is…

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Q: Suppose that 60% of all California motorists are insured. Find the probability  that more than 55%…

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Q: Suppose it takes a child between 4.5 and 12 minutes to eat an ice cream cone. Let X= the time, in…

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Q: The amount of time people spend at the gym follows a uniform distribution from 45 to 90 minutes.…

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Q: The table below shows the probability distribution of job satisfaction scores (1 - 4) for a group of…

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Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

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Q: What is the probability distribution if X∼B(3,0.82)?

A: Given : X∼B(3,0.82)

Q: You need two pieces of string at least 48 cm long for your next craft project. You have one piece of…

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Q: The table summarizes results from 988 pedestrian deaths that were caused by automobile accidents.…

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Q: A study indicates that 70% of teenagers have have a tattoo. You randomly sample 9 teenagers. Find…

A: The information provided in the question are as follows :  Proportion of teenagers those have…

Q: A professor knows that her statistics students' final exam scores have a mean of 79 and a standard…

A:

Q: Suppose that the value of a stock varies each day from $12.22 to $45.34 with a uniform distribution.…

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Q: The probability of a particular soccer team winning a game is 0.30.  The probability of the team…

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Q: Q6. In a Survey, 85% of the people interviewed were unaware that maintaining a healthy weight could…

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Q: Emma loves Butterfinger bars and recently ate a bar that only weighed 58 grams. Based on the…

A: P (z < -1.67) = 0.0478Explanation:z = (x - µ)/σ = (58 - 60)/1.2 = -1.67 P (z < -1.67) = 0.0478…

Q: If the probability that a vaccine you took will protect you from getting the flu is 0.962, what is…

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Q: Explain the similarities and differences between R2 and R2a.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.