Astigmatism is measured in diopters. A perfect eye with no astigmatism has 0 diopters while people with a measurement of 1.5 or more typically need contacts or eyeglasses to have clear vision. A sample of 50 students with glasses determined their level of diopters. The sample mean is found to be 1.795 diopters with a sample standard deviation of 0.356. Determine if this is significantly more than as compared to the typical measurement of 1.5 diopters.

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…

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A:

Q: The weights of newborn baby boys are normally distributed with a mean of 3.33 kg and a standard…

A: GivenMean(μ)=3.33standard deviation(σ)=0.40

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A:

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: It takes an average of 11.5 minutes for blood to begin clotting after an injury.  An EMT wants to…

A: Sample size n=59 Sample mean=12.3 Population standard deviation =2.35 NOTE:- According to bartleby…

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A: Given: data data values  Xi: 5,11,18,25,41  Then to find standard deviations using mutual difference…

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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: 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: It takes an average of 8.6 minutes for blood to begin clotting after an injury. An EMT wants to see…

A: From the provided information, Sample size (n) = 65 Sample mean (x̅) = 8.7 Standard deviation (σ) =…

Q: ble and highest possibel marks assuming normal distributiion .

A: P(X<5)=Pz<5-589=0

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A: The z-score denotes how many standard deviations an individual raw score is away from the mean The…

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A: From the provided information,

Q: On a standardized exam, the scores are normally distributed with a mean of 550 and a standard…

A:

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Given that, Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for…

Q: the mean weight of a group of boys is 145 lb, with a standard deviation of 4lb. if the weights 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 = 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: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…

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Q: The mean of a test score was 21.2 and the standard deviation was 5.1 . Identify the rest scores that…

A: Given Data Mean µ= 21.2. Standard Deviation σ= 5.1. Assuming that the given data is obtained from a…

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A: The sample size is .The sample mean is .The sample standard deviation is .The significance level is…

Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A: Given that  α=0.10That is,α=10%Level of significance =10%

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A:

Q: It takes an average of 12.8 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: 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: e diameters of Douglas firs grown at a Christmas Tree Farm are normally distributed with a mean of 4…

A: GIVEN DATA, normal distributionμ=4σ=1.5we have to find out the given probabilities.

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…

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A:

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 270 days…

A: Let "X" be the lengths of pregnancies in a small rural village in days.

Q: A study was conducted on shoe sizes of students, reported in European sizes. For the men, the mean…

A: Answer:- Given, In European sizes , the mean size = 43.96  standard deviation = 2.24  Also given…

Q: The mean test score for a history test is 63 with a standard deviation of 9. The mean test score for…

A: It is given that the mean test score and standard deviation for history test are 63 and 9, the mean…

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A: Range rule of thumb: The values are significant if it is lies within 2 standard deviations away from…

Q: A process is in statistical control with a mean of 79.5 mm and a standard deviation of 1.85. The…

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A:

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: On a standardized exam, the scores are normally distributed with a mean of 350 and a standard…

A:

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: State the hypotheses. That is, there is no evidence to conclude that average length of a trout…

Q: Dr. Shoals predicts that people who walk a mile in moderately high heels and very high heels will…

A: given data n = 27sd = 3.37standard error for difference in score = ?