Please show work step by step. and round answers to 4 decimal places. thank you!
Please show work step by step. and round answers to 4 decimal places. thank you! 13-14....
7. A 99% confidence interval (in inches) for the mean height of a population is 65.89 <u< 67.51. This result is based on a sample of size 144. If the confidence interval 66.11<u<67.29 is obtained from the same sample data, what is the degree of confidence?
#6. A 90% confidence interval for the mean height of a population is 65.7<u <67.3. This result is based on a sample of size 169. Construct a 99% confidence interval.
#4. A 95% confidence interval for the lives in minutes) of Kodak AA batteries is 4304 <470. Assume that the result is based on a sample of size 100. a) What is the value of sample mean? b) What is the population standard deviation o? c) Construct the 99%confidence interval: d) If the confidence interval 432 < u < 468 is obtained from the same sample data, what is the level of confidence? #5. A 95% confidence interval is 48...
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PLEASE SHOW IT ON TI84.
If n= 150 and p' (p-prime) = 0.92, construct a 95% confidence interval. Give your answers to three decimals. Sp< The video uses p (p-hat) in place of p'.
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...
Q12. a) Suppose the given confidence interval estimates the true population mean as 3.5 < u < 13.1 with a 95% level of confidence when o is known. (1) Find the point estimates for the unknown population mean. (ii) Find the margin of error. (iii) Give the interpretation of the confidence interval. (iv) Name two ways of decreasing the width of the confidence interval. b) State the assumptions necessary for linear regression model Y = A + Bx + E...
2. 22 random samples were selected from a population that has a normal distribution. The sample (1 point) has a mean of 99 and a standard deviation of 5 . Construct a 95% confidence interval for the population standard deviation 76 < σ < 141 3.What are the critical values 2? and 2 that correspond to a 99% confidence level and a (lpom) sample size of 30? 13.121, 52.336 13.787, 53.672 14.257, 49.588 19.768, 39.087
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please round to two decimal places as needed!
FX=73, o = 10, and n=65, construct a 99% confidence interval estimate of the population mean, sps (Round to two decimal places as needed.) Enter your answer in each of the answer boxes
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know what to do on ti 83 and the steps
Here are summary statistics for randomly selected weights of newborn girls: n 237, x-27.5 hg, s 7.9 hg. Construct a confidence interval estimate of the mean. Use a 99% confidence level. Are these results very different from the confidence interval 24.1 hg <μ < 30.1 hg with only 14 sample values, X-27.1 hg, and s-3.7 hg? What...
The following sample observations were randomly selected: (Round the final answers to 4 decimal places.) X: 16 14 9 17 12 11 20 18 Y: 14 21 1 13 11 16 14 15 a. Determine the 95% confidence interval for the mean predicted when X = 6. b. Determine the 95% prediction interval for an individual predicted when X = 6.