The average price for an acre of land is $20,000 with a standard deviation of $2500. What is the probability that a randomly selected plot of land will sell for more than $23,000?
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The average price for an acre of land is $20,000 with a standard deviation of $2500. What is the
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- The average amount customer spend yearly at a local grocery store is $635.55 .  Assume the variable is normally distributed.  If the standard deviation is $94.41 find the probability that a randomly selected  customer spends between $569.46 and $758.28 The weights of steers in a herd are distributed normally. The standard deviation is 200lbs and the mean steer weight is 1300lbs. Find the probability that the weight of a randomly selected steer is between 1000 and 1437lbs. Round your answer to four decimal places.A dice is rolled three times a. Find the probability of getting exactly 2 fours b. Find the mean, variance, and standard deviation
- Leave all probabilities as percentages. Define x on all problems with data. The number of patients coming into a dental clinic each day were 74, 52, and 83. a. Find the sample mean. b. Find the sample standard deviation. c. Find the population variance.The weights of steers in a herd are distributed normally. The standard deviation is 200lbs and the mean steer weight is 1400lbs. Find the probability that the weight of a randomly selected steer is between 1539 and 1679lbs. Round your answer to four decimal places.Mr. Dela Cruz works for a New York theatrical agency whose employees had an average income last year of $28,000 with a standard deviation of $3,000. How much did Mr. dela Cruz earn last year if his z score is -0.8?O $25,600O -$30,400O $11,400O $45,600O $30,400
- Insurance companies make bets. They bet that you’re going to live a long life. An insurance company offers a “death and disability” policy that pays average of $10,000 when you die with a standard deviation of $1,000 or pays average $5000 if you are permanently disabled with standard deviation of $1,000. Assuming the distribution of the policy payout is normal. What percentage of pay will lie between payout of $7,000 and $9,000 when you die? What percentage of the payout will lie below $7,500 if you are permanently disabled? What percentage of the policy will lie above $8,100 when you die?One year, the distribution of salaries for professional sports players had mean $1.6 million and standard deviation $0.81 million. Suppose a sample of 100 major league players was taken. Find the approximate probability that the average salary of the 100 players that year exceeded $1.7 million. Round your answer to nearest ten-thousandth.Mario's weekly poker winnings have a mean of $353 and a standard deviation of $67. Last week he won $185. How many standard deviations from the mean is that?
- Suppose you pay $500 per year to insure your car worth $10,000. The probability that you get in an accident, totaling the car, in any year is 0.001. Find your standard deviation for the insurance. Round your answer to the nearest dollar.Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the standard deviation is 5. What is the probability of selecting a person with a score greater than Cody’s?A successful basketball player has a height of 6 feet 11 inches, or 211 cm. Based on statistics from a data set, his height converts to the z score of 5.17. How many standard deviations is his height above the mean?
