A sample of 33 households from a survey generates the following frequency table of household income (in thousands). Find the mean and standard deviation. X= Interval Frequency 0-29 30-59 60-89 90-119 120-149 150-179 180-209 thousand dollars. (Round to one decimal place as needed.) 2+2NO3 13 4 10 0 1

Q: The gas mileages​ (in miles per​ gallon) for 30 cars are shown in the frequency distribution.…

A: The given data shows the gas mileages for 30 cars. The formula to compute the mean is,

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A: Given that  The following table :  Low Temperature frequency  40-44 3 45-49 5 50-54 11…

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Q: When a Calculus professor is determining the curve for her final exam, she finds that the mean score…

A: Z= x-μσ~N(0,1)

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A: Given: The pie chart of the age distribution.

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Q: da standard deviation of 47. Find the

A: Given : = 211 s = 47 Formula :

Q: A group of adult males has foot lengths with a mean of 27.99 cm and a standard deviation of 1.16 cm.…

A: Given The data is as follows: Population mean, μ=27.99 Population sd, σ=1.16

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A: it suggest that if our sample size is greater than or 30, then we can apply normal approximation to…

Q: Mean = %3D (Round to the nearest hundredth.) Standard deviation (Round to the nearest hundredth.)

A: Given : Class Frequency 50 - 59 2 60 - 69 4 70 - 79 5 80 - 89 10 90 - 99 6

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Q: B/ Classify the following data into a frequency table (take number of classes = 6). Then, sketch the…

A: Introduction :  Frequency polygon:    For an ungrouped data type the frequency polygon can be…

Q: 3565 6781 5656 9101 10024 11366 9286 6657 7290 15558 10376 20795 4027 19100 16223 14502 2830 5785…

A: (D) Use the Excel formula, the mean of the data set is calculated as, Therefore, the mean of the…

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A: Let X be the said random variable with a mean of 264 seconds and a standard deviation of 75 seconds.…

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A: Note: " Since you have posted many sub-parts. we will solve the first three sub-parts for you. To…

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A: Given information Mean = 100 Standard deviation = 15 P(X > x) = 0.65 P(X < x) = 1 – 0.65 =…

Q: The mean of the sample means equals The population standard deviation. The population mean. The…

A: As per central limit theorem Mean of sample means  is x̅ = μ x̅ = sample mean μ = Population mean

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A: In this case, x defines the number of courses taught per semester and f is the number of professor…

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A: Given the grouped frequency distribution table on square footage of 500 houses that are owner…

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A: Mean and the standard deviation is a descriptive statistic. To find the average value we use mean…

Q: Question A9 Eight readings are shown below in ascending order (smallest to largest). -1, 0, 2, х,…

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A: Given: 9.4 17 7.3 7 16.1 5.4 6.9 8.5 4.2 9.2

Q: "he accompanying frequency distribution represents the square footage of a random sample of 500…

A: The following is the formulae for Mean(x) and Standard deviation (s) of frequency distribution…

Q: The indicated IQ score, x, is (R

A: here mean = 100 standard deviation  = 15  X = IQ score

Q: Find the median for the data items in the given frequency distribution. Score, x Frequency, f 4 6. 7…

A: We have given that,  x      f 1     42     13     34     25     26     37     58     2 Then,  We…

Q: Find the standard deviation of the data summarized in the given frequency distribution. The manager…

A: Answer:- Given frequency distribution table is, Waiting time (minutes) (x) Number of customer (f)…

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Q: Variables Mn SD t value critical Decision SMA-LAGUNA SMA-QC SMA-BULACAN Interpretation: Write your…

A: Tool used : MS excel

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Q: A statistics professor gives a survey to each of the 100 students in an introductory statistics…

A: Obtain the population standard deviation:

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A: Here, first lower case and upper case limits are 0 and 499. Then, the midpoint of the class is 249.5…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

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