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The survival times in days of 72 guinea pigs after they were injected with infectious bacteria...

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Basic Math

The survival times in days of 72 guinea pigs after they wereinjected with infectious bacteria in a medical experiment isdisplayed in the table.

434553565657586667737479
808081818182838384888991
919292979999100100101102102102
103104107108109113114118121123126128
137138139144145147156162174178179184
191198211214243249329380403511522598

To access the complete data set, click the link for yourpreferred software format:

Excel  Minitab  JMP  SPSSTI  R  Mac-TXT   PC-TXT  CSVCrunchIt!

(a) Use the software of your choice to graph the distributionand describe its main features. Select the best description fromthe given choices.

The distribution is strongly left‑skewed, with the center around100 days and a range from about 0 days to about 600 days.

The distribution is strongly right‑skewed, with the centeraround 100 days and a range from about 0 days to about 600days.

The distribution is bimodal, with the center around 100 days anda range from about 0 days to about 600 days.

The distribution is Normal, with the center around 300 days anda range from about 0 days to about 600 days.

(b) Use the software of your choice to calculate the five‑numbersummary for these data. (Enter your answers rounded to one decimalplace.)

Min=

days

?1=

days

Median=

days

?3=

days

Max=

days

Calculate the mean for these data. (Enter your answer rounded toone decimal place.)

mean=

days

Summarize your findings. Choose the best statement.

The median is closer to ?1 than to ?3

The mean and the median are almost equal.

The median is closer to ?3 than to ?1

The mean is closer to ?1 than to ?3

Answer & Explanation Solved by verified expert
3.9 Ratings (550 Votes)
We will use excel to do the analysisa We can see that the minimum value is 43 and the maximum of598 We will create 12 classes of width 50 each starting from 050to ending at 550600We create the following bin ranges in excelNext we create a histogram using datadataanalysishistogramget the following    See Answer
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