Week 6.docx - Assignment Submission Scoring Assignment...

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Assignment Submission & Scoring Assignment Submission For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer. Assignment Scoring Your best submission for each question part is used for your score. 1. BBBasicStat8Acc 8.1.001. question True or false? The value z c is a value from the standard normal distribution such that P (− z c < z < z c ) = c . False. By definition, critical values z c are such that 100 c % of the area under the standard normal curve falls in the tails, to the left of − z c and to the right of z c . False. By definition, critical values z c are such that 100 c % of the area under the standard normal curve falls between − z c and z c . True. By definition, critical values z c are such that 100 c % of the area under the standard normal curve falls in the tails, to the left of − z c and to the right of z c . True. By definition, critical values z c are such that 100 c % of the area under the standard normal curve falls between − z c and z c . 2. BBBasicStat8Acc 8.1.002. question True or false? The point estimate for the population mean μ of an x distribution is , computed from a random sample of the x distribution.
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False. The mean of the distribution does not equal the mean of the x distribution and the standard error of the distribution decreases as n increases. False. The mean of the distribution does not equal the mean of the x distribution and the standard error of the distribution increases as n increases. True. The mean of the distribution equals the mean of the x distribution and the standard error of the distribution decreases as n increases. True. The mean of the distribution equals the mean of the x distribution and the standard error of the distribution increases as n increases. 3. BBBasicStat8Acc 8.1.010. question Sam computed a 90% confidence interval for μ from a specific random sample of size n . He claims that at the 90% confidence level, his confidence interval contains μ . Is this claim correct? Explain. Yes. 90% of all confidence intervals will contain μ . No. The probability that this interval contains μ is either 0 or 1. No. The proportion of all confidence intervals based on random samples of size n that contain μ is 0.10. Yes. The proportion of all confidence intervals based on random samples of size n that contain μ is 0.90. 4. BBBasicStat8Acc 8.1.018.MI.
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question What price do farmers get for their watermelon crops? In the third week of July, a random sample of 43 farming regions gave a sample mean of = $6.88 per 100 pounds of watermelon. Assume that σ is known to be $1.96 per 100 pounds.
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