A study conducted by a research group in a recent year reported that 57% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 15 cell phone owners is studied. Round the answers to at least four decimal places. What is the probability that five or more of them used their phones for guidance on purchasing decisions?

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Q: According to Harper's Index, 60% of all federal inmates are serving time for drug dealing. A random…

A: It is given that Harper’s Index 60% of all federal inmates are serving time for drug dealing.

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Q: A bottle maker believes that 10% of his bottles are defective. If the bottle maker is right, what…

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Q: What should I buy? A study conducted by a research group in a recent year reported that 56% of cell…

A: Hello! As you have posted 4 sub parts, we are answering the first 3 sub-parts.  In case you require…

Q: A national study of patients who were overweight found that 56% also have elevated blood pressure.…

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Q: Based on a​ poll, among adults who regret getting​ tattoos, ​17% say that they were too young when…

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Q: The opera theater manager calculates that 32 % of the opera tickets for tonight's show have been…

A: The opera theater calculates that 32% of the opera tickets for tonight's show have been sold. That…

Q: The first product of a test run was inspected and found to be non-defective. What is the probability…

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Q: A study conducted by a research group in a recent year reported that 57% of cell phone owners used…

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Q: According to a posting on a website subsequent to the death of a child who bit into a peanut, a…

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Q: Based on a​ poll, 62% of Internet users are more careful about personal information when using a…

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Q: A new brand of drug-free nasal strip claims to be 90% effective in relieving nasal congestion to…

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Q: According to IDC, 70% of smartphones in the world use Google’s Android operating system in the…

A: Given: 70% of smartphones in the world use Google’s Android operating system in the fourth quarter…

Q: Based on a​ poll, 67​% of Internet users are more careful about personal information when using a…

A: Given p = 0.67 and n =4 Let X be the number of Internet users who are more careful about personal…

Q: An American Association of Individual Investors (AAII) survey found that 25% of AAII members had…

A: Givenp=0.25n=15x~Binomial(n=15,p=0.25)P(X=x)=Cxn px(1-p)n-x   ; x=0,1,....,n

Q: Based on a​ poll, among adults who regret getting​ tattoos, 23% say that they were too young when…

A: Givenp=0.23n=10x~Binomial(n=10,p=0.23)P(X=x)=(nx)×px×(1-p)n-x     ; x=0,1,...,n

Q: The director of a health club conducted a survey and found that 23% of members used only the pool…

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Q: A recent survey conducted by a reputable company indicates that the proportion of college students…

A: Given that p=0.32 , n=200,p( phat <0.25 ) =?

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Q: According to a study conducted by the a public health school, a child seated in the front seat who…

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Q: A survey was conducted to determine the proportion of Grade 11 students who engage in under-age…

A: We have given that p = 0.70 n = 100 We have to calculate  P(x> 0.65)

Q: Based on this table, what is the probability that a student shows improvement if it is known that…

A: The data is given by   Improvement No improvement Total Attend 190 50 240 Not attend 200 200…

Q: According to IDC, 70% of smartphones in the world use Google’s Android operating system in the…

A: It is given that 70% of smartphones in the world use Google’s Android operating system . Then , the…

Q: A study conducted by a research group in a recent year reported that 57% of cell phone owners used…

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Q: According to the U. S. Statistical Abstract 2009, about 25% of persons age 18 - 24 participated in…

A: Given, p = 25% = 0.25 n = 64

Q: In a brand recognition study, 874 consumers knew of Amazon, and 20 did not. Use these results to…

A: In a brand recognition study, 874 consumers knew of Amazon, and 20 did not. Use these results to…

Q: A recent survey found that​ 70% of all adults over 50 wear sunglasses for driving. In a random…

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Q: According to a study on teenage shopping behavior, it was found that 74% of female teens regularly…

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Q: According to a study on teenage shopping behavior, it was found that 75% of female teens regularly…

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A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: According to a study conducted by the a public health school, a child seated in the front seat who…

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Q: In a study of brand recognition, 1013 consumers knew of Costco, and 21 did not. Use these results to…

A: From the provided information, In a study of brand recognition, 1013 consumers knew of Costco, and…

Q: The auto parts department of an automotive dealership sends out a mean of 4.4 special orders daily.…

A: Obtain the probability that, for any day, the number of special orders sent out will be no more than…

Q: According to a study conducted by the a public health school, a child seated in the front seat who…

A: Let C= event that a child was killed B= event that the airbag deployed Given that P(C|B)=1.79P(C|B')…

Q: A market research organization surveyed 102 people and found that 73 of them would like more…

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Q: A recent survey of 2500 people who own tablets showed that 1,654 use the device to play games, 1,001…

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Q: A CNN/USA Today/Gallup poll in April 2005 reported that 75% of adult Americans were satisfied with…

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Q: What is the probability that 2 or fewer are serving time for drug dealing?

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Q: Based on a study by Dr. P. Sorita at Indiana University, approximately 12% of people have green…

A: It is given that n =0.12 and n = 650.

Q: Based on a​ poll, among adults who regret getting​ tattoos, 23% say that they were too young when…

A: Given,n=10p=0.23Let X=no.of adults to get tattoosX~Binomial(n=10  ,  p=0.23)P(X=x)=10x…

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.