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Hogar Banco de preguntas Matemáticas Archive 2024 December 28

Math Questions from Dec 28,2024

Browse the Math Q&A Archive for Dec 28,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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Question 4 The final exam scores in a statistics class are normally distributed with a mean of 63 and a standard deviation of 5. of the students scored less than what value? Add your answer Integer, decimal, or E notation allowed Question 3 The final exam scores in a statistics class are normally distributed with a mean of 63 and a standard deviation of 5. Find the probability that a randomly selected student scored less than 75. Add your answer Integer, decimal, or E notation allowed Two newspapers and are published in a city. It is known that of the city populations reads and reads while reads both and . Further, of those who read but not look into advertisements and of those who read but not also look into advertisements, while of those who read both and look into advertisements. Then the percentage of the population who look into advertisement is [JEE (Main) 2019] Question 2 The speeds of cars are measured using a radar unit, on a motorway. The speeds are normally distributed with a mean of and a standard deviation of . What is the probability that a car selected at chance moves at more than ? Add your answer Integer, decimal, or E notation allowed f) Solve : Question 1 For some computers, the time period between charges of the battery is normally distributed with a mean of 50 hours and a standard deviation of 15 hours. Rohan has one of these computers and needs to know the probability that the time period will be between 50 and 70 hours. Add your answer Integer, decimal, or E notation allowed Question 19 In a survey, 46\% of Americans say they suffer great stress at least once a week. If three people are selected at random, what is the probability that all three will say that they suffer great stress at least once a week? Add your answer Integer, decimal, or E notation allowed Question 18 If a person selects a tie from a store with 8 different ties, how many different possibilities are there if they want to rank their top 3 choices? Add your answer Integer, decimal, or E notation allowed \begin{tabular}{l} Question 17 \\ The following set of data is from a sample. \\ \( 10,14,5,13,11,14,3 \) \\ Compute the coefficient of variation: \\ \hline Add your answer \\ Integer, decimal, or E notation allowed \end{tabular}
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