trong Covid-19 antibodies typically appear about 2 to 4 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 antibod ppeared. The following are the number of days for each of the patients in our sample: 2, 18, 17, 4, 30, 22, 21, 17, 19, 14, 22, 26, 14, 18, 29 is reasonable to treat these measurements as coming from a normal distribution with unknowwn mean a and unknovn standard deviation o Calculate the sample mean of this data. Calculate the sample variance of this data. Use the R, IQR( ) function to find the interquartile range of this data.

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Strong Covid-19 antibodies typically appear about 2 to 4 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, 19, 14, 22, 26, 14, 18, 29
It is reasonable to treat these measurements as coming from a normal distribution with unknown mean u and unknown standard deviation o
Calculate the sample mean of this data.
Calculate the sample variance of this data.
Use the R, IQR( ) function to find the interquartile range of this data.
Transcribed Image Text:Strong Covid-19 antibodies typically appear about 2 to 4 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, 19, 14, 22, 26, 14, 18, 29 It is reasonable to treat these measurements as coming from a normal distribution with unknown mean u and unknown standard deviation o Calculate the sample mean of this data. Calculate the sample variance of this data. Use the R, IQR( ) function to find the interquartile range of this data.
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