70% of households have VCRs. In a random sample of 15 households, what is the probability the number of households with VCRs is between 10 and 12, inclusive?
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According to the Federal Communications Commission, 70% of all U.S. households have vcrs. In a random sample of 15 households, what is the probability that the number of households with vcrs is between 10 and 12, inclusive? A) 0.2061 B) 0.4053 C) 0.5948 D) 0.7329
0.044 Question 5 (1 point) Provide an appropriate response. In one city, 24% ofadults smoke. In groups of size 130 of adults, what is the variance of the number that smoke ? 23.71 31.2 11.86 4.87 Question 6 (1 point) Provide an appropriate response. According to the Federal Communications Commission, 70% of all U.S. households have vcrs. In a random sample of 15 households, what is the probability that the number of households with vers is between 10 and 12,...
according to a government commission, 70% of all nations households have VCRs. In a random sample of 15 households, what is the probability that at least 13 have VCRs? Round to four decimal places According to a government co have VCRs? Round to four de O O 0 O 0.1268 0.7000 0.5000 0.8732
According to a survey, 70% of households said that they have never purchased organic fruits or vegetables. Suppose that this result is true for the current population of households. A. Let x be a binomial random variable that denotes the number of households in a random sample of 10 who have never purchased organic fruits or vegetables. What are the possible values that x can assume? Integers ??? to ???. B. Find to 3 decimal places the probability that exactly...
ian Automotive, 35% of all car-owning households have three or more 5 car ording to the Experi (a) I n a random sample of 20 car-owning households, wh have three or more cars? at is the probability that exactly In a random sample of 20 car-owning households, what is the probability that less or equal to 4 households have three or more cars? (b) (e) In a random sample of 20 car-owning households, what is the probability that greater than...
According to the Federal Communications Commission, 70% of all U.S. households have cable television. Erica selects a random sample of 1,000 households in Dupage Country, what is the probability of obtaining a random sample of at least 734 households with cable from a sample size 1,000?
20% of all US households have some type of high speed internet. Suppose 80 US households are selected at random. a. What is the probability that exactly 15 households have high speed access? b. What is the prob that at least 20 households have high speed access? c. What is the prob that fewer than 10 households have high speed access? d. What is the prob between 12 and 18 households have high speed access?
Suppose that 10% of all steel shafts produced by a certain process are nonconforming but can be re- worked (rather than having to be scrapped). Consider a random sample of 200 shafts, and let X denote the number among these that are nonconforming and can be reworked. What is the (approximate) probability that X is a) At most 30? [2] b) Between 15 and 25 (both inclusive)? [2] c) Assume that the probability of at most x shafts being nonconforming...
In the U.S., there are two sources of national statistics on crime rates: (i) the FBI’s Uniform Crime Reporting Program, which publishes summaries on all crimes reported to police agencies in jurisdictions covering virtually 100% of the U.S.; (ii) the National Crime Survey (NCS), which is based on in- terviews with a nationwide probability sample of households. In 1992, 4.9% of the households in the NCS sample told the interviewers they had experi- enced a burglary within the past 12...
Assume that 25% of all households in Santa Clara county have a burglar alarm (population characteristic). A random sample of 200 Santa Clara county households is taken. What is the probability that between 20% (0.2) to 30% (0.3) of the households in the sample have a burglar alarm?