7.2 t-distribution. The figure on the right shows three unimodal and symmetric curves: the standard normal (z) distribution, the t-distribution with 5 degrees of freedom, and the t-distribution with 1 degree of freedom. Determine which is which, and explain your reasoning. solid dashed *...... dotted -4

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: Mean(µ) = 0Standard deviations (σ) = 1X ~ N (µ, σ )= N(0, 1)

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A: 6163643245269744111031024596206229301551310280361246815917

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Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

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A: We have given the following statement about the t - distribution.

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A: Given data: Weight(s) Count <500 5980 500-999 22015 1000-1499 29846 1500-1999 63427…

Q: Explanation and steps

A:

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A: Given Information: The average exam score for statistics course is 77% Sample size (n) = 14 To check…

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A: From the provided information, Mean (µ) = 3.3 Standard deviation (σ) = 0.95 X~N (3.3, 0.95)

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A: In this case, we need to identify the shape of the distribution.

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A:

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A: We have given that The probability of at least 44 boys

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A: We have given the statements about the  shape of the distribution.

Q: Which one of these graphs does not represent a normal distribution?

A:

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A: Number of commercials 2 5 1 3 4 1 5 3 4 2 Sales volume($100) 50 57 41 54 54 38 63 48 59 46

Q: Pls help ASAP. Pls do all of them.

A: Measurement is an important consideration is statistical analysis.

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A:

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A:

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A: Find your answer below

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A: In this case, we need to identify the correct option.

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A: As per guideline expert have to answer first 3 subparts only.

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A: ClassesDayAbsent1Mon52Wed33Fri74Mon55Wed46Fri97Mon68Wed49Fri11

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A:

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A: From histogram X f fX 1 1 1 2 2 4 3 4 12 4 2 8 5 1 5

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Q: 4. Upper 38% 5. Lower 55%

A:

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: Required probability is P(Z<-1.38)

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A: GivenMean(μ)=225standard deviation(s)=10

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A:

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A: here use standard normal distribution properties

Q: Which one of these graphs does not represent a normal distribution?

A: Which one of these graphs  does not represent a normal distribution

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A: