4. The weekly medical discharges in a small hospital follows a normal distribution with mean 5...
4. The weekly medical discharges in a small hospital follows a normal distribution with mean 5 and standard deviation 2. Find the probability that, in at most 1 out of the 8 randomly chosen weeks, the medical discharges will be less than 3.
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4. The weekly medical discharges in a small hospital follows a
normal distribution with mean 5...
The net weekly sales for a small business follows a normal distribution with a mean of...
The net weekly sales for a small business follows a normal distribution with a mean of 586 dollars and standard deviation of 115 dollars. Calculate each of the following. In each case, round your response to at least 4 decimal places. a) What is the probability that in a randomly selected day, the business will do no more than 604 dollars in net sales? b) Suppose 18 days are randomly selected. What is the probability that the average net sales...
1A) The net weekly sales for a small business follows a normal distribution with a mean...
1A) The net weekly sales for a small business follows a normal distribution with a mean of 536 dollars and standard deviation of 108 dollars. Calculate each of the following. In each case, round your response to at least 4 decimal places. a) What is the probability that in a randomly selected day, the business will do no more than 607 dollars in net sales? b) What is the probability that in a randomly selected day, the business will do...
The average weekly work hours of full-time U.S. workers have approximately a normal distribution with mean...
The average weekly work hours of full-time U.S. workers have approximately a normal distribution with mean 37 hours and standard deviation 10 hours. Suppose 200 U.S. citizens are randomly chosen. Find an approximate probability that less than 10 of them are working more than 50 hours a week on average (round off to third decimal place).
The average weekly work hours of full-time U.S. workers have approximately a normal distribution with mean...
The average weekly work hours of full-time U.S. workers have approximately a normal distribution with mean 37 hours and standard deviation 10 hours. Suppose 200 U.S. citizens are randomly chosen. Find an approximate probability that less than 10 of them are working more than 50 hours a week on average (round off to third decimal place).
The weight, in kg, of fish in a lake follows a normal distribution with mean 2...
The weight, in kg, of fish in a lake follows a normal distribution with mean 2 and standard deviation 0.5 a) What is the probability that a randomly selected fish weights less than lkg? b) Find the value, w, of the weight of a fish such that 95% of the fish weigh ess than w.
1) In a population survey of patients in a rehabilitation hospital, the mean length of stay...
1) In a population survey of patients in a rehabilitation hospital, the mean length of stay in the hospital was 12.0 weeks with a standard deviation equal to 1.0 week. The population distribution was normal. a. Out of 100 patients how many would you expect to stay longer than 13 weeks? b. What is the percentile rank of a stay of 11.3 weeks? c. What percentage of patients would you expect to stay between 11.5 weeks and 13.0 weeks? 2)On...
The average time taken to complete an exam, X, follows a normal probability distribution with mean...
The average time taken to complete an exam, X, follows a normal probability distribution with mean = 60 minutes and standard deviation 30 minutes. What is the probability that a randomly chosen student will take more than 45 minutes to complete the exam?
A random variable follows the normal probability distribution with a mean of 80 and a standard...
A random variable follows the normal probability distribution with a mean of 80 and a standard deviation of 20. What is the probability that a randomly selected value from this population a) is less than 90? b) is less than 65? please spell the steps involved in calculations. Show all work
A random variable follows the normal probability distribution with a mean of 80 and a standard...
A random variable follows the normal probability distribution with a mean of 80 and a standard deviation of 20. Determine the probability for a randomly selected value from this population in parts a through d below. a. is less than 90 b. is less than 65 c. is more than 110 d. is more than 40.
Problem 4. The lifetime of a certain battery follows a normal distribution with a mean of...
Problem 4. The lifetime of a certain battery follows a normal distribution with a mean of 276 and standard deviation of 20 minutes. (a) What proportion of the batteries have a lifetime more than 270 minutes? (b) Find the 90th percentile of the lifetime of these batteries. (c) We took a random sample of 100 batteries. What is the probability that the sample mean of lifetimes will be less than 270 minutes?
The weight, in kg, of fish in a lake follows a normal distribution with mean 2 and standard deviation 0.5 a) What is the probability that a randomly selected fish weights less than lkg? b) Find the value, w, of the weight of a fish such that 95% of the fish weigh ess than w.
Problem 4. The lifetime of a certain battery follows a normal distribution with a mean of 276 and standard deviation of 20 minutes. (a) What proportion of the batteries have a lifetime more than 270 minutes? (b) Find the 90th percentile of the lifetime of these batteries. (c) We took a random sample of 100 batteries. What is the probability that the sample mean of lifetimes will be less than 270 minutes?
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