In a company, the mean wage of the employees is $42,500 and the standard deviation is...
In a company, the mean wage of the employees is $42,500 and the standard deviation is $2000. What is the probability that the mean wage of 75 randomly selected employees will exceed $43,000
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In a company, the mean wage of the employees is $42,500 and the
standard deviation is...
The weights of employees in a large company are normally distributed with a mean of 88...
The weights of employees in a large company are normally distributed with a mean of 88 kg and a standard deviation of 21 kg. What is the probability that the weight of a randomly selected employee is 89kg?
The average hourly pay for a company is $20 with a standard deviation of $3. Furthermore,...
The average hourly pay for a company is $20 with a standard deviation of $3. Furthermore, it is known that the hourly pay rates are normally distributed. (a) [2] What is the probability that a randomly selected employee will have an hourly wage of at least $26? (b) [4] What are the minimum and the maximum hourly wages of the middle 90% of employees? (c) [4] If 15 of the employees have hourly pay rates less than $17, how many...
A company pays its employees an average wage of $15.90 an hour with a standard deviation...
A company pays its employees an average wage of $15.90 an hour with a standard deviation of $1.50. If the wages are approximately normally distributed and paid to the nearest cent, (a) what percentage of the workers receive wages between $13.75 and $16.22 an hour inclusive? (b) the highest 5% of the employee hourly wages is greater than what amount?
The mean number of years employees stay with a company is 12 years with a population...
The mean number of years employees stay with a company is 12 years with a population standard deviation 4 years. The distribution of years has a left skewed shape. The probability that the mean years of staying in the company for a randomly selected sample of 36 will be more than 14 years is? If the CLT holds, find this probability. If you do not believe the CLT holds, enter 0 as your answer.
8. Assume that SAT scores are normally distributed with mean 1518 and standard deviation 325. ROUND...
8. Assume that SAT scores are normally distributed with mean 1518 and standard deviation 325. ROUND YOUR ANSWERS TO 4 DECIMAL PLACES a. If 100 SAT scores are randomly selected, find the probability that they have a mean less than 1500.___________ b. If 64 SAT scores are randomly selected, find the probability that they have a mean greater than 1600 c. If 25 SAT scores are randomly selected, find the probability that they have a mean between 1550 and 1575...
The mean daily rainfall in Los Angeles in December is 0.05 inches with a standard deviation...
The mean daily rainfall in Los Angeles in December is 0.05 inches with a standard deviation of 0.02 inches. What is the probability that the total rainfall in Los Angeles for 35 randomly selected December days (possibly over several years) will exceed 2 inches? Carry your intermediate computations to at least four decimal places. Report your result to at least three decimal places.
One company produces movie trailers with mean 130 seconds and standard deviation 30 seconds, while a...
One company produces movie trailers with mean 130 seconds and standard deviation 30 seconds, while a second company produces trailers with mean 110 seconds and standard deviation 20 seconds. Assume these trailers vary normally. What is the probability that two randomly selected trailers, one from each company, will combine to less than 250 seconds? Question 6 options: .46 .54 .31 .61
9.12 Asset income across individuals has a mean (per year of $500 with standard deviation $400....
9.12 Asset income across individuals has a mean (per year of $500 with standard deviation $400. In a simple random sam- ple of 30 individuals, what is the probability that the total amount of asset income will exceed $18,000? 9.16 An investor has three independent sources of income: wages, rents, and interest. Wages are normally distributed, with mean $15,000 and standard deviation $2000. Rents are nor- mally distributed, with mean $2000 and standard deviation $500. Interest is normally distributed, with...
Suppose IQs are normally distributed with a mean of 100 and a standard deviation of 16....
Suppose IQs are normally distributed with a mean of 100 and a standard deviation of 16. a) If one person is randomly selected, what is the probability that the person’s IQ is higher than 90 but lower than 115? b) If eight people are randomly selected, what is the probability that the sample mean IQ is higher than 90 but lower than 115?
143 lb and a standard deviation given by 25 Suppose that the weights of women marathon...
143 lb and a standard deviation given by 25 Suppose that the weights of women marathon runners are normally distributed with a mean given by You may round your answers to the following questions to two decimal places. (a) If I woman is randomly selected, what is the probability that her weight is above 1577 (h) 14 women are randomly selected, what is the probability that they have a mean weight above 1577 (c) If 75 women are randomly selected,...
The weights of employees in a large company are normally distributed with a mean of 88 kg and a standard deviation of 21 kg. What is the probability that the weight of a randomly selected employee is 89kg?
The average hourly pay for a company is $20 with a standard deviation of $3. Furthermore, it is known that the hourly pay rates are normally distributed. (a) [2] What is the probability that a randomly selected employee will have an hourly wage of at least $26? (b) [4] What are the minimum and the maximum hourly wages of the middle 90% of employees? (c) [4] If 15 of the employees have hourly pay rates less than $17, how many...
The mean daily rainfall in Los Angeles in December is 0.05 inches with a standard deviation of 0.02 inches. What is the probability that the total rainfall in Los Angeles for 35 randomly selected December days (possibly over several years) will exceed 2 inches? Carry your intermediate computations to at least four decimal places. Report your result to at least three decimal places.
9.12 Asset income across individuals has a mean (per year of $500 with standard deviation $400. In a simple random sam- ple of 30 individuals, what is the probability that the total amount of asset income will exceed $18,000? 9.16 An investor has three independent sources of income: wages, rents, and interest. Wages are normally distributed, with mean $15,000 and standard deviation $2000. Rents are nor- mally distributed, with mean $2000 and standard deviation $500. Interest is normally distributed, with...
143 lb and a standard deviation given by 25 Suppose that the weights of women marathon runners are normally distributed with a mean given by You may round your answers to the following questions to two decimal places. (a) If I woman is randomly selected, what is the probability that her weight is above 1577 (h) 14 women are randomly selected, what is the probability that they have a mean weight above 1577 (c) If 75 women are randomly selected,...
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