Suppose, for any future year, the probability its October rain is more than 3 inches is...
Suppose, for any future year, the probability its October rain is more than 3 inches is 1/2, and suppose each future October total is independent of the others. Find the probability exactly two of the next four Octobers have more than 3 inches of rain
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Suppose, for any future year, the probability its October rain
is more than 3 inches is...
3. The long-term average October precipitation in Syracuse is 3.36 inches, with a standard deviation of...
3. The long-term average October precipitation in Syracuse is 3.36 inches, with a standard deviation of 1.48 inches. Assuming a normal distribution, what is the probability that less than 1.0 inches of precipitation will occur in any October? What is the probability that more than 5.0 inches will occur? 4. (15 Points) A chemical industry discharges a waste contaminated with trichloroethylene (TCE) to the city sewer system. By law, the concentration of TCE must be 0.1 ug/L or less. To...
Suppose that the amount of snowfall that Minneapolis gets in a year is normally distributed with...
Suppose that the amount of snowfall that Minneapolis gets in a year is normally distributed with a mean of 45 inches and a standard deviation of 5 inches. This year, what is the probability that Minneapolis will gets. a) More than 48 inches of rain This would be 2 standard deviations or more above the mean and construct a 95 % confidence interval. b) Between 33 and 43 inches of rain One standard deviation on either side of the mean…...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard deviation 3 inches. (a) Find the percentage of 18 year old men with height between 67 and 69 inches. (b) Find the percentage of 18 year old men taller than 6 foot. (c) if a random sample of nine 18 year old men is selected, what is the probability that their mean height is between 68 and 72 inches? (d) if a random sample...
Suppose the weather forecast calls for a "60% chance of rain" each day for the next...
Suppose the weather forecast calls for a "60% chance of rain" each day for the next 3 days. What is the probability that it will NOT rain during the next 3 days? Assume that whether it rains each day is an independent event. Round answer to 2 places after the decimal point.
Suppose the yearly rainfall totals for a some city follow a normal distribution, with mean of 18 inches and standard deviation of 6 inches
Suppose the yearly rainfall totals for a some city follow a normal distribution, with mean of 18 inches and standard deviation of 6 inches. For a randomly selected year, what is the probability, P, that total rainfall will be in each of the following intervals? (Round all answers to four decimal places.) (a) Less than 12 inches.P = ?(b) Greater than 27 inches.P = ?(c) Between 12 and 24 inches.P = ?(d) Greater than 35 inches.P = ?
Suppose people are born in any of the twelve months of the year with equal probability....
Suppose people are born in any of the twelve months of the year with equal probability. What is the probability that at least two of the people in a group of n people are born in the same month? What is the smallest value of n for which this is more than .5?
1) We have a population of frogs with a mean weight of 0.9 pounds. We select...
1) We have a population of frogs with a mean weight of 0.9 pounds. We select four frogs and find their average weight. What do you suppose it will be? 2)Two events are independent of each other. If the probability of the first is 0.6, and the probability of the second is 0.2, what is the probability that both occur? 3)We are to select a president, vice-president, secretary, and treasurer out of a club with 15 members. Assuming that no...
The probability a randomly selected individual in the US earns more than $82,000 per year is...
The probability a randomly selected individual in the US earns more than $82,000 per year is 17.6%. The probability a randomly selected individual in the US earns more than $82,000 given that the individual has a bachelor's degree is 31.3%. A. - Assign letters to each event and write each probability using statistical notation. B. - Are the events "earned a bachelor's degree" and "earn more than $82,000 per year" independent? Explain what test you used for independence and show...
Suppose Kristen is researching failures in the restait business. In the city where she lives, the...
Suppose Kristen is researching failures in the restait business. In the city where she lives, the probability that an independent restaurant will fail in the first year is 43%. She obtains a random sample of 66 independent restaurants that opened in her city more than one year ago and determines if each one had closed within a year. What are the mean and standard deviation of the number of restaurants that failed within a year? Please give your answers precise...
In new york, the probability of rain or snow during a winter day is 25%, for...
In new york, the probability of rain or snow during a winter day is 25%, for a spring day is 31%, for a summer day is 31%, and for a fall day is 23%. Each of these seasons lasts exactly one quarter of the year. Answer in proportions to two decimals (0.XX format). part 1- What is Pr[ it (a random day) is winter ]? part2- What is Pr[ it’s raining or snowing | it’s winter ]? (i.e., what is...
3. The long-term average October precipitation in Syracuse is 3.36 inches, with a standard deviation of 1.48 inches. Assuming a normal distribution, what is the probability that less than 1.0 inches of precipitation will occur in any October? What is the probability that more than 5.0 inches will occur? 4. (15 Points) A chemical industry discharges a waste contaminated with trichloroethylene (TCE) to the city sewer system. By law, the concentration of TCE must be 0.1 ug/L or less. To...
Suppose Kristen is researching failures in the restait business. In the city where she lives, the probability that an independent restaurant will fail in the first year is 43%. She obtains a random sample of 66 independent restaurants that opened in her city more than one year ago and determines if each one had closed within a year. What are the mean and standard deviation of the number of restaurants that failed within a year? Please give your answers precise...
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