29. Hospital Emergency Waiting Times The mean of the waiting times in an emergency room is 80.2 minutes with a standard deviation of 10.5 minutes for people who are admitted for additional treatment. The mean waiting time for patients who are discharged after receiving treatment is 120.6 minutes with a standard deviation of 18.3 minutes. Which times are more variable?

Q: Assume that the hourly costs of operating a commercial aircraft are normally distributed with a mean…

A:

Q: 3. The weight of a regular bag of new powdered milk are normally distributed with mean 500 grams and…

A: We have given that.   X~N( μ , ?^2 )   μ =500, ? =?   Z-score =( x - μ )/?

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A: Using t distribution

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A:

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A:

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A:

Q: According to the U.S. Census​ Bureau, the mean of the commute time to work for a resident of New…

A: Mean = 25.8 Standard deviation = 4.8

Q: statistics professor reported that the mean score in a recent quiz is 72 and the standard deviation…

A: Solution

Q: What is the 80th percentile if the mean is 3 and the standard deviation is 0.6

A: It is given that µ= 3, σ= 0.6.

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A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

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A: X: Useful life of computer Given:

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A:

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A: Given, For piano, cost =3000, mean cost= 4000, sd=2500 For guitar, cost= 550, mean cost = 500, sd…

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A:

Q: An economist wants to find out if there is difference in the monthly expenses of families from…

A: Given that

Q: An economist wants to find out if there is difference in the monthly expenses of families from…

A:

Q: Suppose the exam average in a class is 48% with a standard deviation of 15. What proportion of…

A:

Q: according to the US census bureau,the mean of the commute time to work for a resdient of…

A: It is an important part of statistics. It is widely used.

Q: 6.) The daily water usage per person in Davao City is normally distributed with a mean of 18 gallons…

A: 6.) The daily water usage per person in Davao City is normally distributed with a mean of 18 gallons…

Q: 16. In a standardized test with a normal distribution of scores, the mean is 63 and the standard…

A: here use normal curve property and value near to center in curve have more chance to occur

Q: 2. Calculate the standard deviation for the data set below: 1, 3, 4. 5, 6, 9, 12, 16 (X-Mean)…

A:

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A: Given standard deviation=41.9 mean=74

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A:

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A:

Q: A Statistics instructor wanted to compare the scores on the same final exam given to students at a…

A: We have given that  Sample sizes n1= 36 , n2= 45 ,xbar1=84 ,xbar2= 79 , s1= 3.4 ,s2=2.6  Confidence…

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A:

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A: GivenMean(μ)=400standard deviation(σ)=80

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A:

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A: Given that  Hypothesized Population Mean (\mu)(μ) = 5050 Population Standard Deviation…

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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: Score of student(x)=77Population meanμ=84.5Population standard deviationσ=5.1

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A: Hypothesis test used estimate whether there is any mean significant difference between the sample…

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A: “Since you have mentioned the question number 4 and 5, we will solve that question for you. If you…

Q: 7. A set of data has a variance of 81. What is the standard deviation?

A:

Q: The question is attached in an image.

A: We have given that  Sample sizes n1= 36 , n2=45 , xbar1= 84 , xbar2 =79 ,s1=3.4 , s2= 2.6

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Q: The daily water usage per person in Davao City is normally distributed with a mean of 18 gallons and…

A: Mean = 18 Standard deviation = 4

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A: The time it take Claudia to drive to work is normally distributed with a mean 46 and standard…

Q: Calculate the standard deviation for the data set below: 1, 3, 4. 5, 6, 9, 12, 16 (X-Mean) (X-Mean)?…

A: According to the problem,we have

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A: Given : population mean ,u = 7.2  population standard deviation,σ = 2.3

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A: (1)   Use EXCEL Procedure for finding the value of mean price in Tagum city.   Follow the…

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A: Given information: x¯=0.992σ=0.02μ=1n=50

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A: There are two independent samples which are Makati and Quezon City. We have to find the computed…

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A: