It is 2075 and Stella, an amateur astronomer, recently was watching rocket launches on a Saturday and Sunday at the newly completed spaceport in Arizona. She knows that the mean burn time for launches on Saturday is 94 seconds with a standard deviation of 35 seconds and for Sunday the launches have a mean of 110 seconds with a standard deviation of 26 seconds. The distributions of both days are normally distributed. Round answers to 4 places.What type of data is Stella measuring? Categorical, NominalCategorical, OrdinalNumerical, ContinuousNumerical, Discrete The first launch of the day on Saturday had a burn time of 130. Calculate the z-score of this launch. The first launch of the day on Sunday had a burn time of 33. Calculate the z-score of this launch. Which launch would be considered more unusual? Saturday's Launch and Sunday's Launch are Equally UnlikelySunday LaunchSaturday Launch At the end of the day on Sunday, Stella saw several launches with a burn time 6-8 standard deviations greater than what is normally seen on that day and she knew it would skew the distribution. Which direction would this skew be? NeitherRightLeft

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Answered: It is 2075 and Stella, an amateur…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 22PFA

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It is 2075 and Stella, an amateur astronomer, recently was watching rocket launches on a Saturday and Sunday at the newly completed spaceport in Arizona. She knows that the mean burn time for launches on Saturday is 94 seconds with a standard deviation of 35 seconds and for Sunday the launches have a mean of 110 seconds with a standard deviation of 26 seconds. The distributions of both days are normally distributed. Round answers to 4 places.

What type of data is Stella measuring?
- Categorical, Nominal
- Categorical, Ordinal
- Numerical, Continuous
- Numerical, Discrete
The first launch of the day on Saturday had a burn time of 130. Calculate the z-score of this launch.

The first launch of the day on Sunday had a burn time of 33. Calculate the z-score of this launch.

Which launch would be considered more unusual?
- Saturday's Launch and Sunday's Launch are Equally Unlikely
- Sunday Launch
- Saturday Launch
At the end of the day on Sunday, Stella saw several launches with a burn time 6-8 standard deviations greater than what is normally seen on that day and she knew it would skew the distribution. Which direction would this skew be?
- Neither
- Right
- Left

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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