If the mean of a population is 250 and its variance is 400, approximately what proportion...
If the mean of a population is 250 and its variance is 400, approximately what proportion of observations is in the interval between 210 and 290?
Select one:
a. At most 0.75
b. At least one-half
c. At least three-fourth
d. None of the suggested answers are correct
e. At least 8/9
Homework Answers
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If the mean of a population is 250 and its variance is 400,
approximately what proportion...
A random sample of 49 observations is used to estimate the population variance. The sample mean a...
A random sample of 49 observations is used to estimate the population variance. The sample mean and sample standard deviation are calculated as 59 and 3.1, respectively. Assume that the population is normally distributed. (You may find it useful to reference the appropriate table: chi-square table or F table) a. Construct the 90% interval estimate for the population variance. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) Confidence interval b. Construct the...
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A normal population has mean = 9 and standard deviation -5. (a) What proportion of the...
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calculate the range, population variance, and population deviation for the following set of data. 5,11,12,12,13,14,16,16,16,17 the...
calculate the range, population variance, and population deviation
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5,11,12,12,13,14,16,16,16,17
the
caption at the top is not supposed to be there— sorry for the
confusion
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24. If the population mean is 0 and the population variance o, 1 (10 points) What...
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According to a Field Poll, 400 out of 506 surveyed California adults feel that “education and...
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A random sample of 49 observations is used to estimate the population variance. The sample mean and sample standard deviation are calculated as 59 and 3.1, respectively. Assume that the population is normally distributed. (You may find it useful to reference the appropriate table: chi-square table or F table) a. Construct the 90% interval estimate for the population variance. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) Confidence interval b. Construct the...
A random sample of 43 observations is used to estimate the population variance. The sample mean and sample standard deviation are calculated as 68.5 and 3.1, respectively. Assume that the population is normally distributed. (You may find it useful to reference the appropriate table: chi-square table or F table) a. Construct the 95% interval estimate for the population variance. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) Confidence interval to b. Construct...
A normal population has mean = 9 and standard deviation -5. (a) What proportion of the population is less than 19? (b) What is the probability that a randomly chosen value will be greater than 4? Round the answers to four decimal places. Part 1 of 2 The proportion of the population less than 19 is Part 2 of 2 The probability that a randomly chosen value will be greater than 4 is : A normal population has mean =...
calculate the range, population variance, and population deviation
for the following set of data.
5,11,12,12,13,14,16,16,16,17
the
caption at the top is not supposed to be there— sorry for the
confusion
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