Business
Engineering
Math
Science
Social ScienceVision Correction A survey sponsored by the Vision Council showed that 79% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 20 adults are randomly selected, find the probability that at least 19 of them need correction for their eyesight. Is 19 a significantly high number of adults requiring eyesight correction?
Vision Correction A survey sponsored by the Vision Council showed that 79% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 20 adults are randomly selected, find the probability that at least 19 of them need correction for their eyesight. Is 19 a significantly high number of adults requiring eyesight correction?
Expert Answer
Define the random variable x as the number of adults who need eyesight correction. Here, the total number of adults selected (n) is 20 and each person is independent of each other. Also, there are two possible outcomes (eyesight correction and without eyesight correction) and the probability of the selected adults who need eyesight correction is (p) 0.79. Thus, x follows binomial distribution.
The binomial distribut...
Math
Statistics
Advanced Topics in Statistics
Related Statistics Q&A
Q: In Exercises, X denotes a binomial random variable with parameters n and p. For each exercise, indic...
A: from the given information,consider, X be a binaomial random variable with parameers n and p that is...
Q: In Exercises, X denotes a binomial random variable with parameters n and p. For each exercise, indic...
A: Any binomial distirbution with value of np ≥ 5 and n(1-p) ≥ 5 can be approximated into normal distri...
Q: Testing Claims about Proportions. In Exercises, test the given claim. Identify the null hypothesis, ...
A: In this case, the preceding Exercise is considered as follows:
Q: * Fill in the blanks. a. Data obtained by observing values of one variable of a population are calle...
A: (a)It is known that the word “Uni” means one. Univariate data is a type of data which is collected u...
Q: State two of the main reasons for studying the normal distribution.
A: The two main reasons for studying the normal distribution are as follows:The normal distribution is ...
Q: In each of Exercises, assume that the population standard deviation is known and decide whether use ...
A: The following assumptions are required for the large sample confidence interval about the mean to be...
Q: Acceptance Sampling. Exercises involve the method of acceptance sampling, whereby a shipment of a la...
A: Givenrate of defects = 3%Let proportion of defected aspirin be p = 0.03Total number of randomly sele...
Q: Powerball As of this writing, the Powerball lottery is run in 44 states. Winning the jackpot require...
A: The number of ways to selecting five numbers between 1 and 52 is,
Q: What is a density curve, and why are such curves important?
A: Click to see the answer
