Suppose that a garage samples 21 customers. They find the average time for there oil change is 4,305 miles. Find a 90% confidence interval of the true mean, if the population standard deviation is 1,151.
Q: verage will decline if the patient is immediately told the truth about the injury. The EMT randomly…
A: As per Bartleby guideline expert have to answer first three subparts only dear student please upload…
Q: It takes an average of 14.5 minutes for blood to begin clotting after an injury. An EMT wants to see…
A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…
Q: Assume that a set of test scores is normally distributed with a mean of 110 and a standard deviation…
A: Empirical rule of probability:- Approx. 99.7% of the data lies between ± 3 SD limit of mean μ ±3 σ…
Q: It takes an average of 9.4 minutes for blood to begin clotting after an injury. An EMT wants to see…
A: As per guideline éxpert have to answer first 3 subparts only.
Q: It takes an average of 13.6 minutes for blood to begin clotting after an injury. An EMT wants to see…
A: Given,sample size(n)=43sample mean(x¯)=15.2standard deviation(s)=3.16α=0.01
Q: Assume that the number of pieces per bag has a mean of 264 with a standard deviation of 3. use the…
A: Given : the number of pieces per bag has a mean of , μ=264 a standard deviation of , σ =3 We…
Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…
A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…
Q: A 95% confidence interval for a population mean was reported to be 134 to 142. If the population…
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Q: if a sample n = 16, mean = 10.3,standard deviation is 2.6. calculate a 95% confidence interval.
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Q: to begin otting after an injury. average will change if the patient is immediately told the truth…
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Q: It takes an average of 11.2 minutes for blood to begin clotting after an injury. average will…
A: Note: As per the guidelines, we are only allowed to solve three subparts, please post the other…
Q: It takes an average of 8.8 minutes for blood to begin clotting after an injury. An EMT wants to see…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: It takes an average of 8.2 minutes for blood to begin clotting after an injury. An EMT wants to see…
A: Given Information : It takes an average of 8.2 minutes for blood to begin clotting after an injury.…
Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…
A: Givensample size(n)=51Mean(x)=18.6standard deviation(s)=3.1significance level(α)=0.05
Q: A sample of 90 items has mean 55 and standard deviation 3. A second sample of 110 items has mean 60…
A:
Q: what percent of the students scored higher than 68?
A: It is given thatMean, μ = 70Standard deviation, σ = 3Z-Score, Z = ( X - μ )/σwhere, Z be the…
Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…
A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…
Q: Assume that adults have IQ scores that are normally distributed with a mean of 102 and a standard…
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Q: samples of n = 100 from
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Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…
A: Givenaverage length of trout caught in Pyramid Lake is μ = 20 inches.Sample size = 37sample mean =…
Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…
A: Given that μ=19x¯=18.4s=2.6n=46 Test statistic: ttest=x¯-μsn =18.4-192.646 =-1.565
Q: It takes an average of 10.4 minutes for blood to begin clotting after an injury. An EMT wants to see…
A: Givensample size(n)=67Mean(x)=10.8standard deviation(s)=2.94α=0.05claim is to see if the average…
Q: for a population with a standard deviation of 5 and mean of 48, draw a bell shaped curve, marking…
A: Given data, Mean=48 sd=5 Draw a bell shaped curve?
Q: he director of research and development is testing a new medicine. She wants to know if there is…
A: Here it is given that- Total number of samples(n) = 34 Mean(x)¯ = 320 Standard deviation(δ) = 24
Q: It takes an average of 12.8 minutes for blood to begin clotting after an injury. An EMT wants to see…
A: From part (c) we have test statistic t = 2.072
Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…
A: Given Information: Population mean (μ) = 19 inches; Sample mean (x¯)= 18.6 inches; Sample standard…
Q: It takes an average of 9.9 minutes for blood to begin clotting after an injury. An EMT wants to see…
A: The level of significance is 0.01.
Q: A normal distribution has a mean of 100 and a standard deviation of 2. If 69,146% of the data are…
A:
Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…
A: Givenaverage length of trout caught in Pyramid Lake is μ = 19 inches.Sample size = 45sample mean = x…
Q: It takes an average of 8 minutes for blood to begin clotting after an injury. An EMT wants to see if…
A:
Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…
A:
Q: It takes an average of 11.6 minutes for blood to begin clotting after an injury. An EMT wants to see…
A: The sample size n is 40.
Q: It takes an average of 12.7 minutes for blood to begin clotting after an injury. An EMT wants to see…
A: According to policy we supposed to answer only first three part for remaining please repost the…
Q: It takes an average of 14.6 minutes for blood to begin clotting after an injury. An EMT wants to see…
A:
Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…
A: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…
Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days…
A:
Q: r blood to begin clotting after an injury. An EMT wants to see if the immediately told the truth…
A: According to guidelines we solve first three subparts when given multiple subparts.
Q: Assume that adults have IQ scores that are normally distributed with a mean of 107 and a standard…
A:
Q: Assume that a set of test scores is normally distributed with a mean of 110 and a standard deviation…
A: Given: A set of test scores is normally distributed with a mean of 110 and a standard deviation of…
Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…
A: "Since you have posted a question with multiple sub-parts, we'll solve the first three sub-parts for…
Q: Assume that an intelligence test scores are distributed normallt with a mean of 100 and a standard…
A: Standard normal distribution: The standard normal distribution is a special case of normal…
Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…
A: Note: As per our guidelines we are supposed to answer only 3 subparts of any questions so i am…
Q: Find the 90% confidence interval for the standard deviation of the lengths of pipes if a sample of…
A: given data s = 10.2 n = 22 90% CI for σ = ? α = 1 - 0.90 = 0.10df = n - 1 = 21χ2L = χ21-α2,n-1…
Suppose that a garage samples 21 customers. They find the average time for there oil change is 4,305 miles. Find a 90% confidence interval of the true
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- Dr. Shoals predicts that people who walk a mile in moderately high heels and very high heels will differ in their levels of reported back pain. 27 participants walk in 4-inch heels and then 2.5-inch heels. He calculates the standard deviation of the difference scores and finds sD = 3.37. What is the standard error of the difference for difference scores?If the true mean is 9590 with the standard deviation of 0.0080 within what interval will 98% of sample means fallThe lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days and a standard deviation of 13 days.In what range would you expect to find the middle 50% of most pregnancies? Between and.
- For a sample of 23 operating rooms taken in a hospital study, the mean noise level was 37.9 decibels, and the standard deviation was 7.6. Find the 95% confidence interval of the true mean of the noise levels in the operating rooms. Assume the variable is normally distributed. Use a graphing calculator and round the answers to at least one decimal place.A particular fruit's weights are normally distributed, with a mean of 342 grams and a standard deviation of 14 grams.The heaviest 2% of fruits weigh more than how many grams?Give your answer to the nearest gram.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 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 Hj: ? 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 ? va 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 different from 12.8 at a =…
- An instructor at a private college claim that the students enrolled in her school have an IQ of average intelligence. If there are a total of 40 students’ IQ scores as sample and have a mean of 106. Is the instructor’s claim true? Mean population IQ is 97 with a standard deviation of 12. Use alpha level of 0.05.Find the 90% confidence interval for the variance and standard deviation of the ages of students at Arcanum high school if a sample of 24 students has a standard deviation of 2.3 years. Assume the variable is normally distributed.It takes an average of 10.2 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will decline 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 10.1 minutes for their blood to begin clotting after their injury. Their standard deviation was 1.62 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 altemative hypotheses would be: Họ: Select an answer H1: ? Select an answer c. The test statistic (please show your answer to 3 decimal places.) d. The p-value = e. The p-value is (? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that .. (Please show your answer to 4 decimal places.) O The data suggest the population mean is not significantly less than 10.2 at a = 0.01, so there is…
- A survey of 30 adults found that the mean age of a person's vehicle is 3.6 years. Assuming the population distribution is normal and the standard deviation is 2 years, find the 94% confidence interval for the population mean. What is the meaning of this confidence interval?Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout. Suppose a friend tells you that the average length of trout caught in Pyramid Lake isμ=19 inches. However, a survey reported that of a simple random sample of 38 fish caught, the mean length was 19.9 inches, with estimated standard deviation of 3.1 inches. Do these data indicate that the average length of a trout caught in Pyramid Lake is different from μ=19inches? Use α=0.001. What is the value of the test statistic? (Round your answer to two decimal places.)Find the P-value. (Round your answer to four decimal places.)It takes an average of 10.4 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 67 injured patients to immediately tell the truth about the injury and noticed that they averaged 10.8 minutes for their blood to begin clotting after their injury. Their standard deviation was 2.94 minutes. What can be concluded at the the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: 10.4 H1: 1.5 c. The test statistic t 1.114 (please show your answer to 3 decimal places.) d. The p-value = 0.0500 (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should accept g. Thus, the final conclusion is that ... v the null hypothesis. O The data suggest that the population mean is not significantly greater than 10.4 at a = 0.05, so there is statistically…
