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determined the number of days after complete vaccination that antibodies appeared. The following are the number of days for each of the patients in our sample: 22, 18, 17, 4, 30, 22, 21, 17, 12, 14, 22, 26, 14, 18, 29 It is reasonable to treat these measurements as coming from a normal distribution with unknown mean μ and unknown standard deviation a) Calculate the sample mean of this data. 19.06667 b) Calculate the sample variance of this data. 45.3524 c) Use the R, IQR() function to find the interquartile range of this data. 8 d) Find the sample standard deviation of the above data 6.7344 e) Find the sample median of the above data. 18

determined the number of days after complete vaccination that antibodies appeared. The following are the number of days for each of the patients in our sample: 22, 18, 17, 4, 30, 22, 21, 17, 12, 14, 22, 26, 14, 18, 29 It is reasonable to treat these measurements as coming from a normal distribution with unknown mean μ and unknown standard deviation a) Calculate the sample mean of this data. 19.06667 b) Calculate the sample variance of this data. 45.3524 c) Use the R, IQR() function to find the interquartile range of this data. 8 d) Find the sample standard deviation of the above data 6.7344 e) Find the sample median of the above data. 18

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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i need ans of last two parts which are unsolved 

Strong Covid-19 antibodies typically appear about 3 to 5 weeks after complete vaccination. A researcher took a random sample of 15 Covid-19 patients and, for each of these, determined the number of days after complete vaccination that antibodies appeared. The following are the number of days for each of the patients in our sample: 22, 18, 17, 4, 30, 22, 21, 17, 12, 14, 22, 26, 14, 18, 29 It is reasonable to treat these measurements as coming from a normal distribution with unknown mean μ and unknown standard deviation o a) Calculate the sample mean of this data. 19.06667 b) Calculate the sample variance of this data. 45.3524 c) Use the R, IQR() function to find the interquartile range of this data. 8 d) Find the sample standard deviation of the above data 6.7344 e) Find the sample median of the above data. 18 f) Create a 94% confidence interval for u. ( g) What critical value did you use to calculate the 94% confidence interval in part f)? h) Create a 94% prediction interval for μ. (
Transcribed Image Text:Strong Covid-19 antibodies typically appear about 3 to 5 weeks after complete vaccination. A researcher took a random sample of 15 Covid-19 patients and, for each of these, determined the number of days after complete vaccination that antibodies appeared. The following are the number of days for each of the patients in our sample: 22, 18, 17, 4, 30, 22, 21, 17, 12, 14, 22, 26, 14, 18, 29 It is reasonable to treat these measurements as coming from a normal distribution with unknown mean μ and unknown standard deviation o a) Calculate the sample mean of this data. 19.06667 b) Calculate the sample variance of this data. 45.3524 c) Use the R, IQR() function to find the interquartile range of this data. 8 d) Find the sample standard deviation of the above data 6.7344 e) Find the sample median of the above data. 18 f) Create a 94% confidence interval for u. ( g) What critical value did you use to calculate the 94% confidence interval in part f)? h) Create a 94% prediction interval for μ. (
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i need just last part ans

Strong Covid-19 antibodies typically appear about 3 to 5 weeks after complete vaccination. A researcher took a random sample of 15 Covid-19 patients and, for each of these, determined the number of days after complete vaccination that antibodies appeared. The following are the number of days for each of the patients in our sample: 22, 18, 17, 4, 30, 22, 21, 17, 12, 14, 22, 26, 14, 18, 29 It is reasonable to treat these measurements as coming from a normal distribution with unknown mean μ and unknown standard deviation o a) Calculate the sample mean of this data. 19.06667 b) Calculate the sample variance of this data. 45.3524 c) Use the R, IQR() function to find the interquartile range of this data. 8 d) Find the sample standard deviation of the above data 6.7344 e) Find the sample median of the above data. 18 f)Create a 94% confidence interval for u. (15.5087 22.6246 g) What critical value did you use to calculate the 94% confidence interval in part f)? 2.0462 h)Create a 94% prediction interval for u. (
Transcribed Image Text:Strong Covid-19 antibodies typically appear about 3 to 5 weeks after complete vaccination. A researcher took a random sample of 15 Covid-19 patients and, for each of these, determined the number of days after complete vaccination that antibodies appeared. The following are the number of days for each of the patients in our sample: 22, 18, 17, 4, 30, 22, 21, 17, 12, 14, 22, 26, 14, 18, 29 It is reasonable to treat these measurements as coming from a normal distribution with unknown mean μ and unknown standard deviation o a) Calculate the sample mean of this data. 19.06667 b) Calculate the sample variance of this data. 45.3524 c) Use the R, IQR() function to find the interquartile range of this data. 8 d) Find the sample standard deviation of the above data 6.7344 e) Find the sample median of the above data. 18 f)Create a 94% confidence interval for u. (15.5087 22.6246 g) What critical value did you use to calculate the 94% confidence interval in part f)? 2.0462 h)Create a 94% prediction interval for u. (
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