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- Confidence Intervals for HW Score: 41.78%, 6.27 of 15 points O Points: 0 of 1 Save K In a sample of 13 randomly selected high school seniors, the mean score on a standardized test was 1197 and the standard deviation was 161.7. Further research suggests that the population mean score on this test for high school seniors is 1028. Does the t-value for the original sample fall between - to go and to. 90? Assume that the population of test scores for high school seniors is normally distributed. The t-value of t- fall between - to.90 and to.90 because to. 90 = (Round to two decima does not does Activate Windows View an example Get more help - Clear all to a Check answer 4:21 PM 157'F Mostly sunny 3/10/2023 o search XPS FII F12 insert Delete ArtSEr F6 F7 FB F9 FIO F.B K D/I F2 BackspConfidence Intervals for Question 5, 6.2.11-T HW Score: 41.78%, 6.27 of 15 points x Points: 0 of 1 Save Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed. c=0.90, x= 14.4, s=0.65, n=14 (Round to one decimal place as needed.) Activate Windows iew an example Get more help - Clear all Check anav Player/Player.aspx? cultureld=& theme=math&style=highered&disableStandbyIndicator=true&assignmentHandlesLoc 4:20 PM 57.F Mostly sunny 3/10/2023 ch XPS Insert FII Flafidence Intervals for Question 15, 6.2.42-T HW Score: 41.78%, 6.27 of 15 points Points: 0 of 1 Save A company manufactures light bulbs. The company wants the bulbs to have a mean life span of 996 hours. This average is maintained by periodically testing random samples of 16 light bulbs. If the t-value falls between - to go and to go, then the company will be satisfied that it is manufacturing acceptable light bulbs. For a random sample, the mean life span of Explain. the sample is 1005 hours and the standard deviation is 26 hours. Assume that life spans are approximately normally distributed. Is the company making acceptable light bulbs? The company Round to two making acceptable light bulbs because the t-value for the sample is t= and to.go - needed.) is not IS Activate Windows y an example Get more help - Clear all to a Check answer 4:21 PM O 57'F Mostly sunny 3/10/2023 XPS Insert Delet F12 F9 FIO FII Petser F7 FB F6 DDI 14 BacksV - Confidence Intervals for Question 14, 6.2.41-T Part 1 of 3 HW Score: 41.78%, 6.27 of 15 points Points: 0 of 1 Save K A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from a height of 100 inches, the company wants the mean height the balls bounce upward to be 55.4 inches. This average is maintained by periodically testing random samples of 25 tennis balls. If the t-value falls between - togg and to.98, then the company will be satisfied that it is manufacturing acceptable tennis balls. A sample of 25 balls is randomly selected and tested. The mean bounce height of the sample is 56.5 inches and the standard deviation is 0.25 inch. Assume the bounce heights are approximately normally distributed. Is the company making acceptable tennis balls? Find - to.98 and to.98 to.98= to.98 - Round to three decimal places as needed.) Please help with all steps Clear all Check answer is View an example Get more help . 4:21 PM 57'F Mostly sunny 3/10/2023 O to search XPS nsert Delet FIO FII F12 Preser FB F9 F6 F.B F5 F7 14 F4 Back