Open in Chrome Lody gets a score of 85 in a Biology test and 80 in a Math test. Scores in the Biology test have a mean of 75 and standard deviation of 5. Scores in the Math test have a mean of 76 and standard deviation of 4. In which subject is her standing better assuming that the scores in the two subjects are normally distributed?

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19 Lody gets a score of 85 in a Biology test and 80 in a Math
test. Scores in the Biology test have a mean of 75 and standard
deviation of 5. Scores in the Math test have a mean of 76
and standard deviation of 4. In which subject is her standing
better assuming that the scores in the two subjects are normally
distributed?
21.
Standard-Score
20. The mean score and the standard score in the Statistics test are
respectively equal to 80 and 2.5, whereas in the Mathematics
tests they are respectively equal to 70 and 2.
If Beth got a.
score of 85 in Statistics and a score of 75 in Mathematics, in
which subject is her standing better assuming normality in both
subjects?
Open in Chrome
a. greater than 65?
b. less than 70?
In an English test, the mean is 60 and the standard deviation is
6. Assuming the scores are normally distributed what percent of
the scores is
between 50 and 65?
Transcribed Image Text:19 Lody gets a score of 85 in a Biology test and 80 in a Math test. Scores in the Biology test have a mean of 75 and standard deviation of 5. Scores in the Math test have a mean of 76 and standard deviation of 4. In which subject is her standing better assuming that the scores in the two subjects are normally distributed? 21. Standard-Score 20. The mean score and the standard score in the Statistics test are respectively equal to 80 and 2.5, whereas in the Mathematics tests they are respectively equal to 70 and 2. If Beth got a. score of 85 in Statistics and a score of 75 in Mathematics, in which subject is her standing better assuming normality in both subjects? Open in Chrome a. greater than 65? b. less than 70? In an English test, the mean is 60 and the standard deviation is 6. Assuming the scores are normally distributed what percent of the scores is between 50 and 65?
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