A representative sample of trees in a forest shows the trees to have a mean circumference of 19.7 inches and a standard deviation of 1.3 inches. Assuming the circumferences are normally distributed, what is the z-score for a tree with a circumference of 22 inches? a -1.77 b -6.85 c 6.85 d 1.77

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Q: Find the sample standard deviation. The top five scores on last semesters midterms were 90 97 100 90…

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Q: 0.2743 d.)

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Q: On a standardized exam, the scores are normally distributed with a mean of 120 and a standard…

A: Mean(μ)=120 Standard deviation(σ)=10 Raw score(X)=115

Q: Assume that adults have IQ scores that are normally distributed with a mean of 96.4 and a standard…

A: Given,Mean, μ = 96.4Standard deviation, σ = 18Using formula,

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Q: people where sampled and their heights were recorded, it was discovered mean height was 5 feet and…

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A: The provided data is,

Q: display of data to find the standar

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Q: In a county male height is normally distributed with a mean of 175 cm and a standard deviation of 6…

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Q: The SAT Math scores have a bell-shaped distribution with a Mean of 567 and a Standard Deviation of…

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Q: X. IQ Scores Medium Lead Level O High Lead Level 72 n2 11 84 92 X2% D 88.555 85 87 S2 = 10.083 %3D…

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Q: Assume that the readings on the thermometers are normally distributed with a mean of 0 degrees   and…

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Q: The mean time taken by all participants to run a road race was found to be 155 minutes with a…

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Q: The instructor takes a random sample of size from the population data and obtains the following…

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Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

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Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.