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z scores for 1940, 1230, 2220 & 1400
Homework: Chapter 5.1 - Intro to Normal/Standard Dist....
A standardized exam's scores are normally distributed. In a recent year, the mean test score was...
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1466 and the standard deviation was 310. The test scores of four students selected at random are 1860 1200 2160 and 1360. Find the z-scores that correspond to each value and determine whether any of the values are unusual.
A standardized exam's scores are normally distributed. In a recent year
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 21.3 and the standard deviation was 56. The test scores of four students selected at random are 14, 23, 8, and 35. Find the z-scores that correspond to each value and determine whether any of the values are unusual Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice
A standardized exam's scores are normally distributed. In a recent year, the mean test score was...
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1479 and the standard deviation was 316. The test scores of four students selected at random are 1880, 1220, 2180, and 1380. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1880 is Round to two decimal places as needed.) The z-score for 1220 is (Round to two decimal places as needed) The...
This Question: 1 pt was 57. The tost scores of four students selected at random are...
This Question: 1 pt was 57. The tost scores of four students selected at random are 15, 22, 8, and 37. A standardized exam's scores are normaly distributed. In a recent year, the mean lost score was 20.9 and Find the scores that correspond to each value and determine whether any of the values are unusual The 2-score for 150 (Round to two decimal places as needed) The score for 22 is (Round to two decimal places as needed.) The...
Homework: 5.1 Score: 0 of 1 pt 5.1.41 Save 12 of 15 (11 complete) Hw Score:...
Homework: 5.1 Score: 0 of 1 pt 5.1.41 Save 12 of 15 (11 complete) Hw Score: 73.33%.1 1 of 15 pts E Question Help The systolic blood pressures of a sample of adults are normally distributed, with a mean pressure of 115 millimeters of mercury and a standard deviation of 3.6 milimeters of mercury. The systolic blood pressures of four adults selected at random are 121 millmeters of mercury, 113 millimeters of mercury, 107 millimeters of mercury, and 128 millimeters...
A standardized exam's scores are normally distributed In a recent year, the mean test score was...
A standardized exam's scores are normally distributed In a recent year, the mean test score was 1495 and the standard deviation was 315. The test scores of four students selected at random are 1900, 1240, 2230, and 1400 Find the z-scores that correspond to each value and determine whether any of the values are unusual The z-score for 1900 is (Round to two decimal places as needed) The Z-score for 1240 is (Round to two decimal places as needed.) The...
hi there, having trouble with stats homework In a random sample of 22 people, the mean...
hi there, having trouble with stats homework
In a random sample of 22 people, the mean commute time to work was 31.5 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval fo the population mean u. What is the margin of error of u? Interpret the results. The confidence interval for the population mean u is ( 29.4, 33.6) (Round to one decimal place as...
STA2221 examples on CI & Testing of Hypothesis Name MULTIPLE CHOICE. Choose the one alternative that...
STA2221 examples on CI & Testing of Hypothesis Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answer the question Provide an appropriate response. 1) Find the critical value,te for 0.99 and n-10. A) 3.250 B) 3.169 1.833 D) 2.262 2) Find the critical value to forc=0.95 and n=16. A) 2.947 B) 2.602 2120 D) 2.131 3) Find the value of E, the margin of error, for A) 1.69 B) 0.42 0.99, n=16 and s=2.6. C)...
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 21.3 and the standard deviation was 56. The test scores of four students selected at random are 14, 23, 8, and 35. Find the z-scores that correspond to each value and determine whether any of the values are unusual Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1479 and the standard deviation was 316. The test scores of four students selected at random are 1880, 1220, 2180, and 1380. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1880 is Round to two decimal places as needed.) The z-score for 1220 is (Round to two decimal places as needed) The...
This Question: 1 pt was 57. The tost scores of four students selected at random are 15, 22, 8, and 37. A standardized exam's scores are normaly distributed. In a recent year, the mean lost score was 20.9 and Find the scores that correspond to each value and determine whether any of the values are unusual The 2-score for 150 (Round to two decimal places as needed) The score for 22 is (Round to two decimal places as needed.) The...
Homework: 5.1 Score: 0 of 1 pt 5.1.41 Save 12 of 15 (11 complete) Hw Score: 73.33%.1 1 of 15 pts E Question Help The systolic blood pressures of a sample of adults are normally distributed, with a mean pressure of 115 millimeters of mercury and a standard deviation of 3.6 milimeters of mercury. The systolic blood pressures of four adults selected at random are 121 millmeters of mercury, 113 millimeters of mercury, 107 millimeters of mercury, and 128 millimeters...
A standardized exam's scores are normally distributed In a recent year, the mean test score was 1495 and the standard deviation was 315. The test scores of four students selected at random are 1900, 1240, 2230, and 1400 Find the z-scores that correspond to each value and determine whether any of the values are unusual The z-score for 1900 is (Round to two decimal places as needed) The Z-score for 1240 is (Round to two decimal places as needed.) The...
hi there, having trouble with stats homework
In a random sample of 22 people, the mean commute time to work was 31.5 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval fo the population mean u. What is the margin of error of u? Interpret the results. The confidence interval for the population mean u is ( 29.4, 33.6) (Round to one decimal place as...
STA2221 examples on CI & Testing of Hypothesis Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answer the question Provide an appropriate response. 1) Find the critical value,te for 0.99 and n-10. A) 3.250 B) 3.169 1.833 D) 2.262 2) Find the critical value to forc=0.95 and n=16. A) 2.947 B) 2.602 2120 D) 2.131 3) Find the value of E, the margin of error, for A) 1.69 B) 0.42 0.99, n=16 and s=2.6. C)...
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