According to a recent report, 65%of Internet searches in a particular month used the Google search engine. Assume that a sample of 24 searches is studied. Round the answers to four decimal places. QUESTIONS: (a) What is the probability that exactly 21 of them used Google? (b) What is the probability that 16 or fewer used Google? (c) What is the probability that more than 21 of them used Google? (d) It WOULD/ or WOULD NOT be unusual if fewer than 14 used Google? what is the probability?

Q: A leading large college recently reported that 40.5% of its student body had concerns about the…

A:

Q: In one study of calls to 911 in Los Angeles, it was found that 85% of the calls were not…

A: Solution: From the given information, the proportion of the calls were not emergencies is p=0.85 and…

Q: What is the probability that a randomly selected tea is mint given that the tea is caffeinated?

A: The data is given by   Caffeine-free Caffeinated Total Mint 7 7 14 Fruity 11 7 18 Total 18…

Q: Every year, many people hiking the Australian Outbacks are reported to be lost, and around 34% of…

A: Conditional Probability: Let A and B be two events with P(A) > 0. Then the conditional…

Q: Eleven percent of American children (ages 4 to 17) have Attention Deficient Hyperactivity Disorder…

A:

Q: It is estimated that 75%of all young adults between the ages of 18-35 do not have a landline in…

A: Given Information- p = 0.75 q = 1-0.75 =0.25 n = 100 Here we use Binomial distribution, Binomial…

Q: Based on a​ poll, ​63% of Internet users are more careful about personal information when using a…

A: Let us denote X=the number of internet users who are careful about personal information when using a…

Q: What is the probability that a randomly selected person from the population tests positive?

A: Let us define some events A : a person has cooties. B : a person does not have cooties. E : a person…

Q: (1) The director of a health club conducted a survey and found that 23% of members used only the…

A: We have given that 23% of members used only the pool for workouts. The random variable X that is use…

Q: E.What is the probability that a randomly selected person from this study tried to quit smoking…

A: Here AS PER NOTE GIVEN I HAVE CALCULATED PART E

Q: 13 percent of the patients in a study reported previous episodes of stroke or transient ischemic…

A: Solution: Given information: n= 70 Sample size  p= 0.13 Population proportion.

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

A: Since 62% of the internet user is more careful about personal information when using a public ​Wi-Fi…

Q: In a particular survey of internet users, 3713 respondents say that they use social networking sites…

A: We want to find the probability

Q: Based on a​ poll, 69​% of Internet users are more careful about personal information when using a…

A: Given Data Probability of success,p = 0.69 Probability of failure,q=(1- 0.69 )= 0.31…

Q: Based on a​ poll, 61​% of Internet users are more careful about personal information when using a…

A:

Q: Harris Interactive poll conducted in Fall, 2002 (A-15) via a national telephone survey of adults…

A: We have given that  n=8 , p=80%=0.80 , q=1-0.80=0.20 X~Binomial(n=8, p=0.80) Note: According to…

Q: 18. Given that a randomly selected person had a Negative Reaction to the study, what is the…

A: 18. There are totally 2,000 consumers are considered in this study out of which 660 are males and…

Q: A coach claims that no more than 1/4 of undergrad students will attend football games. What is the…

A: Central limit theorem: The central limit theorem states that the sampling distribution of the sample…

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: The following table shows the percentage of on-time arrivals, the number of mishandled baggage…

A: Probability of an event is the chance of occurrence of the event and its value lies between 0 and 1.…

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, 68​% of Internet users are more careful about personal information when using a…

A: p=0.68  _________________________ P(x≥1) = ?

Q: A nationwide survey of 17,000 college seniors by the University of Michigan revealed that almost 70%…

A:

Q: Wi-Fi Based on a poll conducted through the e-edition of  USA Today , 67% of Internet users are more…

A: In this context, the probability that the internet users are more careful about the personal…

Q: Based on a​ poll, 68​% of Internet users are more careful about personal information when using a…

A:

Q: When drawing a card from a well–shuffled deck, all fifty–two cards are equally likely. What is the…

A: We know that, in a deck of 52 cards we have 4 suits namely, hearts, diamonds, spades, and clubs.…

Q: What is the probability that a randomly selected participant tasted peaches given that the…

A: Probability is the chance of occurrence of an event.

Q: What is the probability that the next person surveyed is very prepared?

A: It is given that Frequency for Very prepared = 247 Total = 247+982+546+341+76 = 2192

Q: What is the probability that a dolphin group is partaking in social activities given that it is…

A:

Q: G. What is the probability that a randomly selected person from this study did not use the patch to…

A:

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

A: Answer: Given that: p= 0.74 , n= 6 now will use Binomial probability P(X=x)=nx*px*(1–p)n–x,where…

Q: 13 percent of the patients in a study reported previous episodes of a stroke. Use 13 percent as the…

A: The mean and the standard deviation of the sampling distribution of the sample proportion is,

Q: In a retirement community, 13% of cell phone users use their cell phones to access the internet. In…

A:

Q: What is the probability that a randomly selected person from the population tests negative?

A: Let us define some events A : a person has cooties. B : a person does not have cooties. E : a person…

Q: The chance that a U.S. police chief believes raising the cost of parking tickets "significantly…

A: We have given that  n=9 , p=1/4=0.25  , q=1-0.25=0.75 X~Binomial(n=9,p=0.25) Find P(X=5)

Q: (a) What is the probability that among 12 randomly observed individuals, exactly 7 do not cover…

A: here given , According to a study done by Nick Wilson of Otago University Wellington, the…

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: In a retirement community, 13% of cell phone users use their cell phones to access the internet. In…

A:

Q: What is the probability that a randomly selected adult user of the Internet is age 50 or older?…

A: Let us define some events A : adult internet user is age 18-49 B : adult internet user is age 50 or…

Q: In a survey of 1147 small-business owners, the following question was posed: Would you recommend…

A:

Q: In a survey of 1000 social-media account holders aged 18 years and older conducted by a certain…

A: Total numbers of account holders: n=1000 Probability that they have one or two account is: p=0.61…

Q: What is the probability that a randomly chosen survey respondent is a male or chose "recreation" as…

A: There are totally 200 people are considered in which 96 are males, 62 are recreations, and 23 are…

Q: In a large on-the-job training program, half of the participants are female and half are male. In a…

A: Consider the formula for the probability. Assume n to be the total number of the participant…

Q: b) Andrew Whittaker, computer center manager, reports that his computer system experienced 25…

A: Solution

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.