The diameters of ball bearings are distributed normally. The mean diameter is 67 millimeters and the standard deviation is 3 millimeters. Find the probability that the diameter of a selected bearing is greater than 63 millimeters. Round to four decimal places.
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The diameters of ball bearings are distributed normally. The
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- Find the mean hourly cost when the cell phone described above is used for 240 minutes.The average thickness of books on a library shelf is 8.3 centimeters. The standered deviation is .6 centimeters. If 20 percent of the books are undersized books on the library shelf. Round your awnser to three decimal in places, and assume the variable is normally distributed.Assume that the Richter scale magnitudes of earthquakes are normally distributed with a mean of 1.157 and a standard deviation of 0.532. Complete parts a through c below.
- Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to P90, the 90th percentile. This is the temperature reading separating the bottom 90% from the top 10%. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents Pan? Choose the correct graph below. O A. OB. OC. OD. The temperature for Pgo is approximately ° (Round to two decimal places as needed.)Print 2. Refrigerator manufacturers design their freezer units to maintain temperatures within a certain range. Suppose a major refrigerator manufacturer wants the temperature of a particular model to have a standard deviation equal to 5°F. The company tested the freezer under normal operation conditions. The table to the right shows the freezer temperature readings in degrees Fahrenheit. Use these readings to complete parts a and b. - 1.5 - 4.2 - 5.6 - 5.4 - 2.6 - 4.1 - 5.4 5.0 0.2 5.5 2.1 1.8 2.1 - 2.9 - 6.5 a. Using a = 0.10, test to determine if the company has achieved its goal. Identify the null and alternative hypotheses. Ho: (1) H1:0° (2) (Type integers or decimals.) Calculate the appropriate test statistic. The test statistic is (Round to two decimal places as needed.) Determine the appropriate critical value(s). The critical value(s) is(are) (Round to three decimal places as needed. Use a comma to separate answers as needed.) State your conclusion. Since the test statistic is…A D Square footage Lower Limit Uper Limit Frequency 499 2 0-499 3 500-999 500 999 17 4 1000-1499 1000 1499 33 5 1500-1999 6 2000-2499 7 2500-2999 8 3000-3499 9 3500-3999 1500 1999 121 2000 2499 119 83 45 2500 2999 3000 3499 3500 3999 41 10 4000-4499 4000 4499 26 11 4500-4999 4500 4999 10 12 13 14 15 16
- Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. Assume 2.7% of the thermometers are rejected because they have readings that are too high and another 2.7% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents the region in which thermometers are rejected? Choose the correct graph below. В. D. The cutoff values are degrees. (Use a comma to separate answers as needed. Round to two decimal places as needed.)Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. Assume 2.7% of the thermometers are rejected because they have readings that are too high and another 2.7% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents the region in which thermometers are rejected? Choose the correct graph below. O A. В. D.Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. Assume 2.4% of the thermometers are rejected because they have readings that are too high and another 2.4% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others. Click to view page 1 of the table. LOADING... Click to view page 2 of the table. LOADING... Question content area bottom Part 1 Which graph represents the region in which thermometers are rejected? Choose the correct graph below. A. xy A graph with a bell-shaped curve, divided into 3 regions by 2 lines from top to bottom, one near the left edge and one near the right edge. Moving from left to right, the region to the left of the first line is shaded and the region to the right of the second line is shaded. B.…
- Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. Assume 2.4% of the thermometers are rejected because they have readings that are too high and another 2.4% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others. Click to view page 1 of the table. LOADING... Click to view page 2 of the table. LOADING... Question content area bottom Part 1 Which graph represents the region in which thermometers are rejected? Choose the correct graph below. A. xy A graph with a bell-shaped curve, divided into 3 regions by 2 lines from top to bottom, one near the left edge and one near the right edge. Moving from left to right, the region to the left of the first line is shaded and the region to the right of the second line is shaded. Your answer is…Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. Assume 3.3% of the thermometers are rejected because they have readings that are too high and another 3.3% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents the region in which thermometers are rejected? Choose the correct graph below. O A. i Q B. Q ( Q O c. The cutoff values are degrees. (Use a comma to separate answers as needed. Round to two decimal places as needed.) Q Q D.Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. Assume 3.4% of the thermometers are rejected because they have readings that are too high and another 3.4% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents the region in which thermometers are rejected? Choose the correct graph below. O A. O C. O B. C Q 18 1 The cutoff values are degrees. (Use a comma to separate answers as needed. Round to two decimal places as needed.) O D.
