Assume that when adults with smartphones are randomly selected 41% use them in meetings or classes. If 6 adult smartphone users are randomly selected, find the probabibility that at least 2 of them use their smartphones in meetings or classes.

Q: a study is conducted to access the impact of caffeine consumption, smoking, alcohol consumption, and…

A:

Q: A study found that 80% of teenagers use social media on a regular basis. John wants to investigate…

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Q: According to a prestigious historical society, in 1999, 7.2% of recent high school graduates believe…

A: Given, Proportion of population who believed that the Romans invented mayonnaise P=7.2%=0.072 Sample…

Q: The experiment is to toss two balls into four boxes in such a way that each ball is equally likely…

A: Given, An experiment is to toss two balls into four boxes in such a way that each ball is equally…

Q: An experiment was conducted to compare the effectiveness of four training programs, namely, A, B, C,…

A: The summary of the data gathered is recorded in the table. From the above table, n1=5, n2=5,n3=5…

Q: A batch of 130 semiconductor chips is inspected by choosing a sample of 3 chips. Assume 5 of he…

A:

Q: Market research has shown that 60% of persons who are introduced to a certain product actually buy…

A: According to the provided information, p=0.60

Q: At a recent meeting at the American College of Asthma, Allergy, and Immunology, researchers reported…

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Q: Of 52 students, it was found that 15 were commuters. If one-quarter of the female students and…

A: Let, x be no of male students y be no of female students Given, x+y=52  -->1 15 were commuters.…

Q: Based on a survey, assume that 32% of consumers are comfortable having drones deliver six consumers…

A: Given, based on a survey, assume that 32% of consumers are comfortable having drones deliver their…

Q: A researcher claims that the incidence of a certain type of cancer is less than 5%. To test his…

A: In this context, a researcher claimed that the proportion of incidence of particular type of cancer…

Q: Suppose that in manufacturing a very sensitive electronic component, a company and its customers…

A: Given x=25 n=1000 alpha = 0.05

Q: Suppose it is claimed that 40% of adults support the practice of changing clocks twice a year in…

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Q: In Chi Square test, it is a requirement that expected frequencies should be at least 5 for the…

A: Assumptions for chi square test: Sample drawn from the normal population The data in the cells…

Q: Based on information from a previous study, r, = 35 people out of a random sample of n, = 104 adult…

A: There are two populations which are Americans who did not attend college and Americans who did…

Q: A smartphone manufacturer admits that 12% of the smartphones they make have defects that could…

A: Given Data: 'X' is the number of smartphones manufactured that have defects p=0.12 n=20   X~…

Q: a total of 20 applicants came in for a job interview. Among them, four were 45 years old, six were…

A: Given Data : X f 45 4 39 6 42 3 40 5 35 2 N = 20 Mean =x =∑fxN Var=1N∑fx2-x2 SD=Var

Q: If 4% of the bottles produced by a company are defective.determine the probabilkities of sample that…

A: Given,n=100p=0.04q=1-p=1-0.04=0.96x=no. of defectivesx~Binomial(n=100,p=0.04)P(X=x)=Cxn px qn-x   ;…

Q: A sample of 800 truck drivers from Minnesota were interviewed randomly and 316 answered they like…

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Q: According to the National Center for Health Statistics (2004), 22.4% of adults are smokers. A random…

A: The provided information are: Population proportion (p) = 22.4% = 0.224 Sample size (n) = 300

Q: In a big city 325 men out of 600 men were found to be smokers. Does this information support the…

A: We have given that Sample size n = 600 Favorable cases x = 325 Sample proportion p^=x/n = 0.5417

Q: construct a 95% C.I. for the actual; percentage of shoppers who live more than 15 miles from that…

A: The sample size is n = 200 Proportion of shoppers who live more than 15 miles from that center in…

Q: An agriculturalist on a farm conducted a study to investigate whether ladybugs are effective in…

A: Number of pairs of trees selected with a positive difference in number of damaged avocado fruit is…

Q: Assume that 28% of randomly selected adults have high cholesterol (with a level of at least…

A:

Q: Suppose that 60% of all students currently enrolled at all California Community College campuses…

A: Given: p=60%=0.60n=1000

Q: A smartphone manufacturer admits that 12% of the smartphones they make have defects that could…

A: 1. Given that X=the number of smartphones manufactured by this company that have defects that could…

Q: a study is conducted to access the impact of caffeine consumption, smoking, alcohol consumption, and…

A: Given data, p=40%=0.4 n=8 Let X be event that they consume caffiene and smoke. P(X<=6)=?

Q: If 3% of all cars fail the emissions inspection, find the probability that in a sample of 90 cars,…

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Q: For a telephone survey, a marketing research group needs to contact at least 600 wives, 480…

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Q: According to a local chamber of commerce, in 1993, 5.9% of local area residents owned more than five…

A: State the hypotheses. That is, there is no evidence that the percentage of the local area residents…

Q: A coin is biased so that a head is twice as likely to occur as a tail . If a coin is tossed 3 times,

A: Given: Number of trials (n) = 3 P (Heads) = 23 P (Tails) = 13 Let X be the binomial random variable…

Q: According to a report, 9.5% of all full-time S.A. undergraduate students study abroad. Assume that…

A: Introduction:The full-time female undergraduate students are of two types- those who study abroad,…

Q: A local jam production company is confident that 60% of the population will like its new grapefruit…

A: Here events are independent.

Q: An experiment was conducted to compare the effectiveness of four training programs, namely, A, B, C,…

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

Q: A researcher claims that based on the information obtained from the Centers for Disease Control and…

A: Given: 17% of young people ages 2-19 are obese Randomly select 200 people and 42 found obese. X= 42…

Q: An experiment was conducted to compare the effectiveness of four training programs, namely, A, B, C,…

A: The summary of the data gathered is recorded in the table. From the above table, n1=5, n2=5,n3=5…

Q: An experiment was conducted to compare the effectiveness of four training programs, namely, A, B, C,…

A: The summary of the data gathered is recorded in the table. From the above table, n1=5, n2=5,n3=5…

Q: Suppose that 73.2% of all adults with type 2 diabetes also suffer from hypertension. After…

A: From the provided information, Sample size (n) = 1000 Out of which 718 suffered from hypertension…

Q: Suppose that in manufacturing a very sensitive electronic component, a company and its customers…

A: Given that a company and its customers have tolerated a 2% defective rate. n = number of components…

Q: mputer manufacturer is interested in comparing assembly times for two keyboard assembly processes.…

A: Degrees of freedom = n-1 = 8-1 = 7

Q: In a random sample of 1022 U.S. adults, 480 think that the U.S. government is doing too little to…

A: Hypotheses:   Here p1 and p2 be the two proportions. The aim is to check whether p1= p2. The null…

Q: A geneticist working on peas has a single plant monohybrid Y/y (yellow) plant and, from a self of…

A: Given:    Number of Progeny plants for 95%

Q: an automobile engineer claims that 1in 10 automobile accidents are due to driver fatigue . if a…

A: Given: P(Accidents are due to driver fatigue)=p=110=0.10Number of accidents observed =n=5

Q: Recently, the number of airline companies that offer in-flight Wi-Fi service to passengers has…

A: Given that  Sample size n =160 Favorable cases x =25 Sample proportion π^=x/n  =25/160 =0.1563…

Q: A smartphone manufacturer admits that 12% of the smartphones they make have defects that could…

A: Given that 12% of the smartphones have defects. So probability of finding a defective smartphone is…

Q: An experiment was conducted to compare the effectiveness of four training programs, namely, A, B, C,…

A: 1. Number of treatments: In the given situation, there are 4 treatments. That is, K=4.00

Q: A research center claims that a least 31% of adults in a certain country think that their taxes will…

A:

Q: Assume that when adults with smartphones are randomly selecte than 3 of them use their smartphones…

A: It is given that, 46% adults use smartphone in meetings or classes i.e. P(Using smartphone) = p=…

Q: A study by a reputable research organization found that when presented with prints from the same…

A: Given data: The probability that fingerprint experts correctly identify the match is P(A)=93%=0.93.…

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.