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** Show all work to earn full credit ** Notes, Hwk...
Please show work. Thank you. 6. Find the minimum sample size required in to construct an...
Please show work. Thank
you.
6. Find the minimum sample size required in to construct an 85% confidence interval about the population proportion p of college students who have a tattoo. The wanted error needs to be within 3% of the population proportion. Use the fact that 4 years ago, 11.2% of college students had a tattoo.
no calculators please! need to know how to work it out the long way, thank you!...
no calculators please! need to
know how to work it out the long way, thank you!
A simple random sample of 50 items from a population with σ-6 resulted in a sample mean of 32. a. Provide a 90% confidence interval for the population mean. b. Provide a 95% confidence interval for the population mean c. Provide a 99% confidence interval for the population mean. 2,
Please Show Work. Thank you. 7. Conduct a hypothesis test showing all of your steps. Females...
Please Show Work. Thank
you.
7. Conduct a hypothesis test showing all of your steps. Females under the age of 51 years old are supposed to get, on average, 18 mg of iron daily. In a random sample of 44 women, their daily mean intake was 16.77 mg of iron with a standard deviation of 3.02 mg. An agency claims that women get less than the recommended daily iron intake. Test this claim with a 4% level of significance. a)...
Please show work step by step. and round answers to 4 decimal places. thank you! 13-14....
Please show work step by step. and round answers to 4 decimal
places. thank you!
13-14. A 99% confidence interval (in inches) for the mean height of a population is 65.7<<67.3. This result is based on a sample of size 144. Construct the 95% confidence interval.
Please answer the following questions and show your work neatly. a). Explain the difference between a...
Please answer the following questions and show your work neatly. a). Explain the difference between a 95% confidence interval and a 99% confidence interval in terms of probability b). To construct a 95% confidence interval for a population mean µ, what is the correct critical value z*? c) To construct a 99% confidence interval for a population mean µ, what is the correct critical value z*?
please show all the work. if you use excel please show the screenshots. Thank you !...
please show all the work. if you use excel please show the
screenshots. Thank you !
Question 4 (25pts) A hospital would like to develop a regression model to predict the total hospital bill for a patient based on the age of the patient (x1), his or her length of stay (x2), and the number of days in the hospital's intensive care unit(ICU) (x3). Data for these variables can be found in Q4data.xlsx. Complete parts a through e below. a)...
Please show all work step by step in detail. thank you! round final answers to 4...
Please show all work step by step in detail. thank you! round
final answers to 4 decimal places.
19-20. Data Set “IQ and Lead” lists full IQ scores for a random sample of subjects with high lead levels in their blood. The statistics are summarized below: Low Blood Lead Level n = 78, * = 92.88462, s = 15.34451 a) Use a 0.05 significance level to test the claim that the mean IQ score of people High Blood Lead Level...
Please show work if possible. Thank you. In a test of the effectiveness of garlic for...
Please show work if possible. Thank
you.
In a test of the effectiveness of garlic for lowering cholesterol, 45 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (before-after) in their levels of LDL cholesterol (in mg/dL) have a mean of 3.3 and a standard deviation of 16.7. Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does...
Show ALL THE FORMULAS or equations that you use and your plugging of numbers. Please, work...
Show ALL THE FORMULAS or equations that you use and your
plugging of numbers.
Please, work the solution in an
-->organized way<--,
showing as much details as
possible.
Answer the question completely. Thank you
:)
1. A very large population of bipolar transistors has a current gain with a mean value of 120 and a standard deviation of 10. The values of current gain may be assumed to be independent Gaussian random variables. (a) Find the confidence interval for a...
Please Show Work. Thank you. 2. Conduct a hypothesis test showing all of your steps. A...
Please Show Work. Thank
you.
2. Conduct a hypothesis test showing all of your steps. A Gallup Poll reports that 65% of American adults support labor unions. In order to test this claim, 988 adults in the U.S. were surveyed, of which 617 approved of labor unions. Do 65% of Americans support them? Test this claim with a 6% level of significance. a) State the hypotheses and label the claim. b) Is it left-tailed, right-tailed, or two-tailed (circle one)? c)...
Please show work. Thank
you.
6. Find the minimum sample size required in to construct an 85% confidence interval about the population proportion p of college students who have a tattoo. The wanted error needs to be within 3% of the population proportion. Use the fact that 4 years ago, 11.2% of college students had a tattoo.
no calculators please! need to
know how to work it out the long way, thank you!
A simple random sample of 50 items from a population with σ-6 resulted in a sample mean of 32. a. Provide a 90% confidence interval for the population mean. b. Provide a 95% confidence interval for the population mean c. Provide a 99% confidence interval for the population mean. 2,
Please Show Work. Thank
you.
7. Conduct a hypothesis test showing all of your steps. Females under the age of 51 years old are supposed to get, on average, 18 mg of iron daily. In a random sample of 44 women, their daily mean intake was 16.77 mg of iron with a standard deviation of 3.02 mg. An agency claims that women get less than the recommended daily iron intake. Test this claim with a 4% level of significance. a)...
Please show work step by step. and round answers to 4 decimal
places. thank you!
13-14. A 99% confidence interval (in inches) for the mean height of a population is 65.7<<67.3. This result is based on a sample of size 144. Construct the 95% confidence interval.
please show all the work. if you use excel please show the
screenshots. Thank you !
Question 4 (25pts) A hospital would like to develop a regression model to predict the total hospital bill for a patient based on the age of the patient (x1), his or her length of stay (x2), and the number of days in the hospital's intensive care unit(ICU) (x3). Data for these variables can be found in Q4data.xlsx. Complete parts a through e below. a)...
Please show all work step by step in detail. thank you! round
final answers to 4 decimal places.
19-20. Data Set “IQ and Lead” lists full IQ scores for a random sample of subjects with high lead levels in their blood. The statistics are summarized below: Low Blood Lead Level n = 78, * = 92.88462, s = 15.34451 a) Use a 0.05 significance level to test the claim that the mean IQ score of people High Blood Lead Level...
Please show work if possible. Thank
you.
In a test of the effectiveness of garlic for lowering cholesterol, 45 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (before-after) in their levels of LDL cholesterol (in mg/dL) have a mean of 3.3 and a standard deviation of 16.7. Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does...
Show ALL THE FORMULAS or equations that you use and your
plugging of numbers.
Please, work the solution in an
-->organized way<--,
showing as much details as
possible.
Answer the question completely. Thank you
:)
1. A very large population of bipolar transistors has a current gain with a mean value of 120 and a standard deviation of 10. The values of current gain may be assumed to be independent Gaussian random variables. (a) Find the confidence interval for a...
Please Show Work. Thank
you.
2. Conduct a hypothesis test showing all of your steps. A Gallup Poll reports that 65% of American adults support labor unions. In order to test this claim, 988 adults in the U.S. were surveyed, of which 617 approved of labor unions. Do 65% of Americans support them? Test this claim with a 6% level of significance. a) State the hypotheses and label the claim. b) Is it left-tailed, right-tailed, or two-tailed (circle one)? c)...
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