The mean and standard deviation of 20 items was found to be 10 and 2 respectively. Later it was found the item 12 was misread as &, Calculate the correct mean and standard deviation,
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A: Note: As per the guidelines, we are only allowed to solve three subparts, please post the other…
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A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
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A: Given Information : It takes an average of 8.2 minutes for blood to begin clotting after an injury.…
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A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…
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A: Given that Jenny's z score= -0.56, Nicole's z score=1.13
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- What is the Differences Between Predicted and Observed ValuesIt takes an average of 12.8 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will change if the patient is immediately told the truth about the injury. The EMT randomly selected 51 injured patients to immediately tell the truth about the injury and noticed that they averaged 14.1 minutes for their blood to begin clotting after their injury. Their standard deviation was 4.48 minutes. What can be concluded at the the a = 0.01 level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Но: 12.8 Н: 12.8 c. The test statistic =| 2.072 (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is [? f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the populaton mean is significantly different from 12.8 at a = 0.01, so there is…If the standard deviation of a data is 14.50 and if each value of the data isdecreased by 5, then find the new standard deviation.
- It takes an average of 12.8 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will change if the patient is immediately told the truth about the injury. The EMT randomly selected 51 injured patients to immediately tell the truth about the injury and noticed that they averaged 14.1 minutes for their blood to begin clotting after their injury. Their standard deviation was 4.48 minutes. What can be concluded at the the a = 0.01 level significance? a. For this study, we should use [t-test for a population mean b. The null and alternative hypotheses would be: Но: 12.8 H1 : 12.8 c. The test statistic V =| 2.072 (please show your answer to 3 decimal places.) d. The p-value = | (Please show your answer to 4 decimal places.) e. The p-value is [? f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... a the null hypothesis. O The data suggest the populaton mean is significantly different from 12.8 at a = 0.01, so there is…It takes an average of 8 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will increase if the patient is immediately told the truth about the injury. The EMT randomly selected 60 injured patients to immediately tell the truth about the injury and noticed that they averaged 8.5 minutes for their blood to begin clotting after their injury. Their standard deviation was 1.3 minutes. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? v Select an answer v H1: ? v Select an answer v c. The test statistic ? v = (please show your answer to 3 decimal places.) d. The p-value (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that .. O The data suggest the populaton mean is significantly greater than 8 at a = 0.10, so…It takes an average of 9.9 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will change if the patient is immediately told the truth about the injury. The EMT randomly selected 55 injured patients to immediately tell the truth about the injury and noticed that they averaged 9.7 minutes for their blood to begin clotting after their injury. Their standard deviation was 1.29 minutes. What can be concluded at the the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: Select an answer H1: Select an answer v c. The test statistic ? = (please show your answer to 3 decimal places.) d. The p-value - (Please show your answer to 4 decimal places.) e. The p-value is ?a f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... е. the null hypothesis. O The data suggest the populaton mean is significantly different from 9.9 at a = 0.01, so there is…
- If 3 standard deviations to the left of the mean gives you a value of 30 on the normal curve and 4 standard deviations to the right of the mean gives you a value of 93, the mean =It takes an average of 8 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will increase if the patient is immediately told the truth about the injury. The EMT randomly selected 62 injured patients to immediately tell the truth about the injury and noticed that they averaged 8.5 minutes for their blood to begin clotting after their injury. Their standard deviation was 3.1 minutes. What can be concluded at the the a = 0.05 level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Ho: Hv Select an answer v Н: Select an answer v c. The test statistic t v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is >v f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest that the population mean is not significantly greater than 8 at a =…It takes an average of 11.6 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will change if the patient is immediately told the truth about the injury. The EMT randomly selected 40 injured patients to immediately tell the truth about the injury and noticed that they averaged 12.1 minutes for their blood to begin clotting after their injury. Their standard deviation was 1.76 minutes. What can be concluded at the the a = 0.05 level of significance? For this study, we should use Select an answer The null and alternative hypotheses would be: Ho: ? Select an answer H₁: ? Select an answer The test statistic ? ✓ = The p-value = The p-value is ? ✓ a Based on this, we should [Select an answer the null hypothesis. Thus, the final conclusion is that ... (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) O The data suggest the population mean is significantly different from 11.6 at a = 0.05, so there is statistically…
- It takes an average of 12.7 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will increase if the patient is immediately told the truth about the injury. The EMT randomly selected 46 injured patients to immediately tell the truth about the injury and noticed that they averaged 13.5 minutes for their blood to begin clotting after their injury. Their standard deviation was 1.77 minutes. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: ? v Select an answer v H1: ? v Select an answer v c. The test statistic ? v = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... the null hypothesis. O The data suggest that the population mean is not significantly greater than 12.7…The scores on a standardized test are normally distributed with a mean of 85 and standard deviation of 6. What test score is 2.64 standard deviations below the mean?It takes an average of 14.6 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will increase if the patient is immediately told the truth about the injury. The EMT randomly selected 60 injured patients to immediately tell the truth about the injury and noticed that they averaged 15.4 minutes for their blood to begin clotting after their injury. Their standard deviation was 2.66 minutes. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: ? Select an answer ♥ H: ? v| Select an answer v c. The test statistic (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer | the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest that the population mean is not significantly greater than 14.6 at a =…
