In a study of 474,508 cell phone​ users, it was found that 197 developed cancer of the brain or nervous system. Assuming that cell phones have no​ effect, there is a 0.000472 probability of a person developing cancer of the brain or nervous system. We therefore expect about 224 cases of such cancer in a group of 474,508 people. Estimate the probability of 197 or fewer cases of such cancer in a group of 474,508 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous​ system? ​(a) ​P(x≤197​)=

Q: In a dental study on children it was found that the probability of the child population having any…

A: P(C) = p = 2/3 P(Not C) = q = 1-p= 1/3

Q: A survey of American mitochondrial DNA variation has found that the most common haplotye (genotype),…

A: From the provided information, A survey of American mitochondrial DNA variation has found that the…

Q: The probability that a person with certain symptoms has hepatitis is 0.7. The blood test used to…

A: Given that P  ( H ) = 0.7, P (+ve/H ) = 0.95 , P ( + ve / H' ) = 0.05 Find P( H/+ve ) = ?

Q: In 2009, the CDC estimated that 1,100,000 of the 305,000,000 residents of the United States are…

A: Given: The total number of residents of the United states is N=305,000,000. The number of residents…

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: In a study of 396,281 cell phone​ users, it was found that 55 developed cancer of the brain or…

A:

Q: According to an article published at heart.org in 2015 regarding a variety of US health data: Given…

A: Solution: Given information: Let A  be the event that someone in the US has a first time  heart…

Q: A drug is effective in nine cases out of ten. If it is tested on 12 patients, what is the…

A:

Q: In a study of 251,402 cell phone users, it was found that 78 developed cancer of the brain or…

A: Solution

Q: A recent study suggested that 70% of all eligible voters will vote in the next presidential…

A: Given Information: 70% of all eligible voters will vote in the next presidential election i.e., p =…

Q: 10 years ago, high levels of lead in blood put 83% of children at risk. Now only 8% of children are…

A: Introduction: Denote p as the true population proportion of children who were at risk 10 years ago,…

Q: Based on a smartphone​ survey, assume that 48​% of adults with smartphones use them in theaters. In…

A:

Q: The chances of an error occurring in any single line of code is found to be 0.001 (0.1%). If a…

A: Giventhe no. of error occuring in any single line of code is 0.001The no. of error for 500 lines is…

Q: A study shows that 15% of adult males don’t wash their hands in a public restroom. We take a random…

A:

Q: A study showed that ​69.7% of occupants involved in a fatal car crash wore seat belts. Of those in a…

A:

Q: A labor statistician claims that 6% of the labor forces will be laid off likely  to pandemic impact.…

A: Solution: According to the labor statistician's claim, 6% of the labor forces will be laid off…

Q: A recent survey of 1090 U.S. adults selected at random showed that 685 consider the occupation of…

A: The question is about prop. Given : Randomly selected no. of adults ( n ) = 1090 No. of adults…

Q: a new vaccine for tropical illnesses has the probability of negative side effects on 0.122% of…

A:

Q: n a survey of 1,772 U.S. adults, 294 said that they were very confident in the nutritional…

A: We know that  Sample size n= 1772  , total number of confident = 294 ,  X= 4

Q: A study of 180 randomly selected American Airlines flights showed that 68 arrived late. What is the…

A: No. of American flights =180 No. of american flights arrived late=68

Q: In a study of 441,193 cell phone users, it was found that 76 developed cancer of the brain or…

A:

Q: In a study of 384,817 cell phone​ users, it was found that 173 developed cancer of the brain or…

A:

Q: In a study of 387,979 cell phone​ users, it was found that 133 developed cancer of the brain or…

A:

Q: What is the probability that, in a simple random sample of 500 in the US, fewer than 30 have blood…

A:

Q: The National Centre for Health Statistics reported that of every 883 deaths in recent years, 24…

A: The objective of the question is to find out the probability that a particular death is due to an…

Q: If a particular shipment of thousands of aspirin tablets actually has a 44​% rate of​ defects, what…

A: It is given that aspirin tablets have a 44% rate of defects. That is probability of getting a…

Q: A recent survey of 1010 U.S. adults selected at random showed that 685 consider the occupation of…

A: We have to find given probability that a U.S. adult selected at random thinks the occupation of…

Q: A labor statistician claims that 6% of the labor forces will be laid off likely  to pandemic impact.…

A: Solution: According to a labor statistician's claim, 6% of the labor forces will be paid off. Let p…

Q: Physicians at a clinic gave what they thought were drugs to 960960 asthma, ulcer, and herpes…

A: given data  n = 960 p^ = 0.52claim: p>0.49

Q: A study shows that 46% of teachers have gone through a lot of stress since April, due to the…

A: We have to find out given probabiity..

Q: In a study of 460,112 cell phone users, it was found that 104 developed cancer of the brain or…

A:

Q: In a study, 42% of adults questioned reported that their health was excellent. A researcher wishes…

A: Let us denote X=the number of people with excellent health.n=sample size=13p=probability of…

Q: university study involves a simple random sample of 26 students taken from a population of​ 12,550.…

A: Given that Simple random sample size (n) = 26 Population size  = 12,550 Undergraduate students make…

Q: Suppose that asthma affects 1 in 20 children in a population. We decide to redo the survey and now…

A:

Q: Suppose that asthma affects 1 in 20 children in a population. You take an SRS of 50 children from…

A: It is given that asthma effects 1 in 20 children in a population. Let the random variable X denotes…

Q: In a study of 320,354 cell phone users, it was found that 34 developed cancer of the brain or…

A: Given p - probability of cancer =0.000142n = sample isze =320354

Q: In a study of 354,079 cell phone users, it was found that 139 developed cancer of the brain or…

A: The standard normal variable Z based on proportions is defined as, z = (p̂ – p)/ √[p (1 – p)/n]…

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.