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An elementary school is offering 3 language classes: one in Spanish, one in French, and one in German. These classes are open to any of the 97 students in the school. There are 33 in the Spanish class, 36 in the French class, and 17 in the German class. There are 13 students that in both Spanish and French, 4 are in both Spanish and German, and 6 are in both French and German. In addition, there are 2 students taking all 3 classes.
If one student is chosen randomly, what is the probability that he or she is taking at least one language class?
If two students are chosen randomly, what is the probability that at least one of them is taking a language class?
The different types of malfunction occur at about the same frequency. Develop a probability distribution for the duration of a service call.
Blood type AB is found in only 3% of the population. If 320 people are chosen at random, find the probability of the following. (Round your answers to four decimal places.)
do the calculations. Show all your steps. P(B/A) = P (B1/A1) * P (B2/A2) * P(B3/A3). Evaluate the employer's knowledge of his/her employees.
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
Determine if the tires were exceeding the guarantee. At the .05 significant level, it was concluded that the tires are exceeding the manufacturer's guarantee.
a consignment contains 100 items. if a random sample of 3 items from a consignment contains 1 or more faulty items then
The batteries used in a digital watch have an operating life that is normally distributed. As sample of 18 batteries reveals a mean of 2.35 years and a standard deviation of 0.4 years.
about 34 of americans have type a blood. a blood drive gets 140 donors. what is the probability that at least 40 of
You are taking a multiple-choice quiz that consist of 7 questions. find the probability of guessing exactly four answers correctly.
The wheat harvesting season is short. Farmers deliver their truck loads of wheat to a giant central storage bin within a two-week span. Because of this, wheat-filled trucks waiting to unload and return to the fields have been known to back up for ..
100 trials are run for a poisson process. if the probability of a success is 0.02 what are the mean number of successes
To develop 3-month and 2-month moving average for the time series.The following data represents demand for company ABC's products for the last 10 months.
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