Mathematics, 01.07.2021 01:00 camilaird

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Mathematics, 21.06.2019 18:30, PineaPPle663

Which one ? is the answer and how to find this answer

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Mathematics, 22.06.2019 01:20, blackboy21

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed

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Mathematics, 22.06.2019 03:50, jescanarias22

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.

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Mathematics, 22.06.2019 04:00, hobbs4ever1

What is the measure of ba (the minor arc) in the diagram below?

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