A binomial distribution happens such that q=4C2/100 and n=6C1.Find the square root of std deviation.
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A binomial distribution happens such that q=4C2/100 and n=6C1.Find the square root of std deviation.
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- Assume the readings on thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. Find the probability that a randomly selected thermometer reads between -0.61 and 1.91. An electrical firm manufactures light bulbs that have a length of life that is normally distributed with mean equal to 800 hours and a standard deviation of 40 hours. Find the probability that a bulb burns between 778 and 834 hours. 5.An electrical firm manufactures light bulbs that have a length of life that is normally distributed with mean equal to 818 hours and a standard deviation of 43 hours. Find the probability that a bulb burns between 782 and 871 hours. (Write your final answer in decimal form, and round off to 4 decimal places.)
- Assume that readings on thermometers are normally distributed with a mean of 0 and a standard deviation of 1. A thermometer is selected at random. Find the probability that the reading is less than -2.08In a recent study, the Centers for disease Control and prevention reported that diastolic blood pressurers of adult women in the U.S. are approximately normally distributed with mean 80 and standard deviation 10.now let x be diastolic blood pressures of adult women in the U.S. find the probability that the diastolic blood pressure of a randomly chosed adult women in U.S. equals 80. a. P(X-80)= b. find the value k, so that the probability that the diastolic blood pressure of randomly chosen adult woman in the U.S. is greater than or equal to the value k. becomes 0.7777 c. find the value m, so that the probablity that the diastolic blood pressure of a randomly chosen adult woman in the U.S. is less than the value, m, becomes 0.2223The length of time it takes to find a parking space is normally distributed with a mean of eight minutes and a standard deviation of two minutes. Find the probability that it takes at most five minutes to find a parking space?
- The standard deviation of the chi-square distribution is twice the mean. True Falseof error, Claim: The standard deviation of pulse rates of adult males is more than 11 bpm. Fora random sample of 148 adult males, the pulse rates have a standard deviation of 11.6 bpm. Find the value of the test statistic. r7 *.* The value of the test statistic is (Round to two decimal places as needed.)The amount of time taken by a bank teller to serve a randomly selected customer has a normal distribution with a mean of 2 minutes and a standard deviation of 0.5 minutes. Find the probability that both of two randomly selected customers will take less than 3.5 minutes each to be served. Round to 4 decimal places
- The average speed on a highway is 68 mph with a standard deviation of 4 mph. A vehicle is selected at random. We need to find the probability that it violates the 70 mph speed limit. Find the area to the right of the z-score (speeding).The probability that a patient recover from a rare blood disease is 0.6. It is known that 100 people have contracted this disease. It is desired to find the probability that less than one half survive. For easier computations, normal distribution is used to approximate this binomial distribution. Find the value of the standard deviation to be used in the computation.
