Mathematics

Mathematics, 14.07.2019 21:40, alove1777

If an outcome measure is normally distributed, this means that

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Mathematics, 01.07.2019 20:40, kayleg907436

Annual incomes are known to have a distribution that is skewed to the right instead of being normally distributed. assume that we collect a large (ngreater than30) random sample of annual incomes. can the distribution of incomes in that sample be approximated by a normal distribution because the sample is large? why or why not? choose the correct answer below. a. yes; the sample size is over 30, so the sample of incomes will be normally distributed. b. no; unless more than 30 samples are collected, the sample of incomes will not be normally distributed. c. no; the sample means will be normally distributed, but the sample of incomes will be skewed to the right. d. no; the population of incomes is not normally distributed, so the sample means will not be normally distributed for any sample size.

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Mathematics, 01.07.2019 21:20, Tf0273433

Weights of golden retriever dogs are normally distributed. samples of weights of golden retriever dogs, each of size nequals15, are randomly collected and the sample means are found. is it correct to conclude that the sample means cannot be treated as being from a normal distribution because the sample size is too small? explain. choose the correct answer below. a. yes; the sample size must be over 30 for the sample means to be normally distributed. b. no; the samples are collected randomly, so the sample means will be normally distributed for any sample size. c. no; as long as more than 30 samples are collected, the sample means will be normally distributed. d. no; the original population is normally distributed, so the sample means will be normally distributed for any sample size.

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Mathematics, 01.10.2019 21:30, josediaz1124

Which of the following is not a commonly used practice? choose the correct answer below.a.the distribution of sample means gets closer to a normal distribution as the sample size n gets larger.b.if the original population is not normally distributed and ngreater than30,the distribution of the sample means can be approximated reasonably well by a normal distribution.c.if the distribution of the sample means is normally distributed, and ngreater than30,then the population distribution is normally distributed.d.if the original population is normally distributed, then for any sample size n, the sample means will be normally distributed.

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Mathematics, 11.10.2019 12:10, ethanyayger

Weights of golden retriever dogs are normally distributed. samples of weights of golden retriever dogs, each of size nequals15, are randomly collected and the sample means are found. is it correct to conclude that the sample means cannot be treated as being from a normal distribution because the sample size is too small? explain. choose the correct answer below. a. yes; the sample size must be over 30 for the sample means to be normally distributed. b. no; the original population is normally distributed, so the sample means will be normally distributed for any sample size. c. no; the samples are collected randomly, so the sample means will be normally distributed for any sample size. d. no; as long as more than 30 samples are collected, the sample means will be normally distributed.

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