a. How many of the 12 vehicles would you expect to use E-ZPass? (Round your answer to 4 decimal places.) b. What is the mode of the distribution? What is the probability associated with the mode? (Round your answer to 4 decimal places.) c. What is the probability eight or more of the sampled vehicles use E-ZPass? (Round your answer to 4 decimal places.)

The percentages of weapons used in murders in a certain year are described in the pie chart. Complete parts (a) through (c) below. Types of Weapons Used in Murders Fireams, 64.9% Knives or other cutting instruments, 10.2% Unknown or other dangerous weapon, 13.1% Personal weapons (hands, fists, etc), 11.8% a. Find the probability that a weapon randomly selected from those used in murders in this specific year was a firearm. The probability that a weapon randomly selected from those used in murders in this specific year was a firearm is Type an integer or a decimal.) b. Find the probability that a weapon randomly selected from those used in murders in this specific year was NOT a firearm The probability that a weapon randomly selected from those used in murders in this specific year was NOT a firearm is (Type an integer or a decimal.) c. From inspecting the pie chart, a student concludes that in any year, 11.8% of weapons used in murders are personal weapons What would you tell the…

According to a recent poll about 33% of American adults are planning to dress up for Halloween this year. 250 American adults were asked "Are you planning to dress up for Halloween this year?. The number of surveyed people that responded “Yes” is recorded. The random variable X is ....what? The number of trials n is ....what? The probability of success is  ...what %. The probability of failure is  ...what %

The 8th group cut but the number is 0.005

Organ Donors USA Today provided information about a survey of 5100 adult Internet users. Of the respondents, 2346 said they are willing to donate organs after death. In this survey conducted for Donate Life America, 100 adults were surveyed in each state and the District of Columbia, and results were weighted to account for the different state population sizes.  a. What percentage of respondents said that they are willing to donate organs after death? b. Based on the poll results, what is the probability of randomly selecting an adult who is willing to donate organs after death? c. What term is used to describe the sampling method of randomly selecting 100 adults from each state and the District of Columbia?

18. Stress at work: In a poll conducted by the General Social Survey, 81% of respondents said that their jobs were sometimes or always stressful. Two hundred workers are chosen at random. a. Approximate the probability that 160 or fewer find their jobs stressful.

When studying radioactive​ material, a nuclear engineer found that over 365​ days, 1,000,000 radioactive atoms decayed to 974,425 radioactive​ atoms, so 25,575 atoms decayed during 365 days.   a. Find the mean number of radioactive atoms that decayed in a day. b. Find the probability that on a given​ day, 52 radioactive atoms decayed.

According to a health​ publication, 16.5​% of persons under the age of 65 have no health insurance coverage. Suppose that four persons under the age of 65 are randomly selected. a. Determine the probability distribution for the​ number, X, who have no health insurance coverage. b. Determine and interpret the mean of X.

The class I'm taking is statistics!   I am completely stuck. Need help. I have attached the problem. Please view attachment before answering.  Thank you!

An auditor for Health Maintenance Services of Georgia reports 40 percent of policyholders 55 years or older submit a claim during the year.  Twenty policyholders are randomly selected for company records. (Binomial Dist.)  a. How many of the policyholders would you expect to have filed a claim within the last year? ie. The mean value.  b. What is the probability that 10 of the selected policyholders submitted a claim last year? c. What is the probability that 10 or more of the selected policyholders submitted a claim last year?