The diameters of bolts produced in a machine shop are normally distributed with a mean of 5.66 millimeters and a standard deviation of 0.03 millimeters. Find the two diameters that separate the top 9% and the bottom 9%. These diameters could serve as limits used to identify which bolts should be rejected. Round your answer to the nearest hundredth, if necessary.

Solve the problem.The diameter of ball bearings produced in a manufacturing process can be explained using a uniform distribution over the interval 6.5 to 8.5 millimeters. What is the mean diameter produced in this manufacturing process? Select one: A. 8.0 millimeters B. 7.5 millimeters C. 8.5 millimeters D. 7.0 millimeters

c. Identify the mean and standard deviation of x. Choose the correct answer below. O A. µ and О В. н аnd o C. and O D. and o 이들

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 −2.25 and −1.65 and draw a sketch of the region.   Click to view page 1 of the table. LOADING... Click to view page 2 of the table. LOADING...       Question content area bottom Part 1 Sketch the region. Choose the correct graph below.     A.             -1.65-2.25         A graph with a bell-shaped curve, divided into 3 regions by 2 lines from top to bottom, both on the left side. Moving from left to right, the region left of the first line is shaded. The z-axis below this line is labeled negative 2.25. The z-axis below the second line is labeled negative 1.65.   B.             -1.65-2.25         A graph with a bell-shaped curve, divided into 3 regions by 2 lines from top to bottom, both on the left side. The region between the 2 lines is shaded. Moving from…

A manufacturer of bolts has a quality-control policy that requires it to destroy any bolts that are more than 4 standard deviations from the mean. The quality control engineer knows that the bolts coming off the assembly line have mean length of 13 cm with a standard deviation of 0.05 cm. For what lengths will a bolt be destroyed? Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to one decimal place as needed.) OA. A bolt will be destroyed if the length is less than OB. A bolt will be destroyed if the length is greater than cm. OC. A bolt will be destroyed if the length is between OD. A bolt will be destroyed if the length is less than cm. KOTE cm and cm. cm or greater than cm.

c. Find the 95th percentile. (Round to three decimal places as needed.)

A forest ranger has data on the heights of a large growth of young pine trees. The mean height is 3.2 feet and the standard deviation 0.6 feet. A histogram shows that the distribution of heights is approximately normal. Approximately what proportion of the trees should we expect to be between 4.0 and 4.4 feet tall? A) 0.02  B) 0.07   C) 0.91  D) 0.98

Please answer a and b

The ratings of applicants for credit are normally distributed with a mean of 200 and a standard deviation of 50. Find the 60th. percentile, the rating score that separates the lower 60% from the top 40%.  Round to the nearest integer.       a. 208   b. 187   c. 211   d. 213

The Ahmadi Corporation wants to increase the productivity of its line workers. Four different programs have been suggested to help increase productivity. Twenty employees, making up a sample, have been randomly assigned to one of the four programs and their output for a day's work has been recorded. You are given the results below. At 95% confidence, conduct the ANOVA test to determine whether there is a significant difference in the mean output under the four programs. Program A Program B Program C Program D 150 150 185 175 130 120 120 135 180 160 145 110 Part of the ANOVA table is shown below. Source of Variation Sum of Squares 8,750 Between Groups Within Groups 16,350 Total 220 190 180 175 d.f. 19 150 120 130 175 Mean Square