The mean lifetime of a tire is 41 months with a variance of 64.
If 100 tires are sampled, what is the probability that the mean of the sample would be greater than 41.88 months? Round your answer to four decimal places.
The mean lifetime of a tire is 41 months with a variance of 64. If 100...
The mean lifetime of a tire is 37 months with a standard deviation of 8 months. If 127 tires are sampled, what is the probability that the mean of the sample would be less than 38.85 months? Round your answer to four decimal places.
The mean lifetime of a tire is 43 months with a standard deviation of 10 months. If 105 tires are sampled, what is the probability that the mean of the sample would differ from the population mean by less than 0.41 months? Round your answer to four decimal places.
1) Suppose cattle in a large herd have a mean weight of 1169lbs and a variance of 17,161. What is the probability that the mean weight of the sample of cows would differ from the population mean by greater than 12lbs if 145 cows are sampled at random from the herd? Round your answer to four decimal places. 2) The mean lifetime of a tire is 36 months with a variance of 49. If 126 tires are sampled, what is...
The lifetime of a certain type of automobile tire (in thousands of miles) is normally distributed with mean =μ39 and standard deviation =σ5. (a) What is the probability that a randomly chosen tire has a lifetime greater than 47 thousand miles? (b) What proportion of tires have lifetimes between 38 and 43 thousand miles? (c) What proportion of tires have lifetimes less than 44 thousand miles? Round the answers to at least four decimal places.
The operation manager at a tire manufacturing company believes that the mean mileage of a tire is 49,36049,360 miles, with a variance of 6,568,9696,568,969. What is the probability that the sample mean would differ from the population mean by less than 231231 miles in a sample of 247247 tires if the manager is correct? Round your answer to four decimal places. CAN YOU PLEASE SHOW ME HOW TO DO THIS IN CALCULATOR TI-83 PLUS SPECFICALLY
Suppose the horses in a large stable have a mean weight of 807lbs, and a variance of 5776. What is the probability that the mean weight of the sample of horses would differ from the population mean by greater than 18lbs if 41 horses are sampled at random from the stable? Round your answer to four decimal places.
The operation manager at a tire manufacturing company believes that the mean mileage of a tire is 37,014 miles, with a standard deviation of of4617 miles. What is the probability that the sample mean would be less than 36,435 miles in a sample of 56 tires if the manager is correct? Round your answer to four decimal places.
The mean life of a television set is 138138 months with a variance of 324324. If a sample of 8383 televisions is randomly selected, what is the probability that the sample mean would be less than 143.4143.4 months? Round your answer to four decimal places.
Suppose cattle in a large herd have a mean weight of 1228lbs and a variance of 8100. What is the probability that the mean weight of the sample of cows would be greater than 1240lbs if 115 cows are sampled at random from the herd? Round your answer to four decimal places.
The cost of 5 gallons of ice cream has a variance of 64 with a mean of 34 dollars during the summer. What is the probability that the sample mean would differ from the true mean by more than 1.1 dollars if a sample of 38 5-gallon pails is randomly selected? Round your answer to four decimal places.