its applied engineering data analysis course
its applied engineering data analysis course Q4 X is the diameter (in mm) of tires, normally...
its applied engineering data analysis course
Q3 A signal frequency measurement shows that frequency, X, is normally distributed with a mean of 100 and a variance of 5 ie X N (100, 5). SKETCH THE AREA and calculate the following probabilities: a. P(90 s X S125) b. P(X298) c. Find the x such that P(X Sx)-0.1 d. Find the range that contains the MIDDLE 90% of the observations: ie. find 'a, such that x is in [100-a, 100 + a]...
4 . A machine makes spherical balls. Diameters X are normally distributed with mean 240.0 mm and standard deviation 3.0 mm. Another machine, working independently, makes sockets with diameters Y that are normally distributed with mean 249.0 mm and standard deviation 4.0 mm. A ball will fit into the socket only if ; otherwise the ball is too big for the socket. Define the “gap” to be the difference between the socket diameter and the ball diameter. Therefore a ball...
its applied engineering data analysis course
Q2 A standard normal variable has a mean of zero and a variance of 1 ie. Z* N(0, 1). SKETCH THE AREA and find the following z that fulfills the probability: 1. P(Zsz) -0.1 2. P(Z2z or Zs-z) -0.1 3. At what value of z, the area to the right is 2.5%? 4. At what value of z, the area between-z and z is 68%?
its applied engineering data analysis course
Q1 A standard normal variable has a mean of zero and a variance of 1 ie. Z N(0, 1). SKETCH THE AREA and find the following probabilities: 1. P(Z 1.25) 2. P(Z s-1.25) 3. P(-.38 3 Z 3.25)
Q4- The mean value of the weight of product X is normally distributed with average (0.297 kg) a are below 0.274 kg (Note: Z table is attached)? (20 points) Answer nd Standard deviation (0.024 kg). Find the percentage of product that their weights
uestion A1A Tires claims that its tires last longer than tires manufactured by its main competitor, YYZ Tires. A consumer group studied the lifespans of tires manufactured by each manufacturer. The lifespans of a random sample of 10 tires from each manufacturer, in thousands of miles, are recorded. Assume that the population standard deviation of the lifespan for tires manufactured by A1A Tires is 3 thousand miles, while the population standard deviation of the lifespan for tires manufactured by YYZ...
1) We know that z has a standard normal distribution with a mean of 0 and standard deviation of 1. The probability that z is less than 1.15 is . Use your z-table and report your answer to four decimal places. 2)A sample of 15 grades from a recent Stats exam has a mean of 69.3 points (out of a possible 100 points) and a standard deviation of 16.5 points. Calculate the z-score for the student who scored 74.1 points on...
A1A Tires claims that its tires last longer than tires manufactured by its main competitor, YYZ Tires. A consumer group studied the lifespans of tires manufactured by each manufacturer. The lifespans of a random sample of 10 tires from each manufacturer, in thousands of miles, are recorded. Assume that the population standard deviation of the lifespan for tires manufactured by A1A Tires is 3 thousand miles, while the population standard deviation of the lifespan for tires manufactured by YYZ Tires...
Let x be a continuous random variable that is normally distributed with a mean of 25 and a standard deviation of 6. Find the probability that x assumes a value: a) between 29 and 36 b) between 22 and 35 Let x be a continuous random variable that is normally distributed with a mean of 80 and a standard deviation of 12. Find the probability that x assumes a value a) greater than 69 b) less than 73 c) greater...
Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 229 feet and a standard deviation of 44 feet. We randomly sample 42 fly balls. Let X¯= average distance in feet for 42 fly balls. Enter numbers as integers or fractions in "p/q" form, or as decimals accurate to nearest 0.01 . (.20) X¯∼ (pick one) PBNE ( , ) . (.20) Use the mean and standard deviation of X¯ to determine the...