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Using standard deviation. Normally distributed

find the 90% confidence interval for the variance and standard deviation of a sample of 16 and a standard deviation of 2.1
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2. asked by Anon
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If a random variable X is normally distributed with mean μ and standard deviation σ, we use the notation: X~N(μ,σ).For
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2. 63 views
9 points) In a normally distributed data set, find the value of the standard deviation if the following information is given.a.
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2. asked by Sarah Nichols
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find the 90% confidence interval for the variance and standard deviation of the ages of seniors at Oak Park College if a sample
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2. asked by Diandra
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A factory makes steel rods and steel tubes. The diameter of a steel rod is normally distributed with mean 3.55cm and standard
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2. asked by Bob
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Eldon received 72 on his first calculus test. The marks were normally distributed with a mean of 60 and a standard deviation of
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2. asked by josh
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Suppose scores on the mathematics section of the SAT follow a normal distribution with mean 540 and standard deviation 120. ACT
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2. asked by Anonymous
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Suppose scores on the mathematics section of the SAT follow a normal distribution with mean 540 and standard deviation 120. ACT
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2. asked by Anonymous
3. 2,109 views
80 U2 songs (in seconds) were selected at random. Assume that the data is normally distributed and that the bands entire
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2. asked by Jenny
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Two samples each of size 25 are taken from independent populations assumed to be normally distributed with equal variances. The
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2. asked by joanne
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