Past experience tells us that the mean grade on an exam is 70 and the standard d

Question

Past experience tells us that the mean grade on an exam is 70 and the standard deviation is 11. No other information is known about the distribution of grades. What percentage of scores will lessthanorequalto in the range 55 to 85? A little over 23%. At least 46.2%. About 50%. About 68%. The following boxplot is of birth weights (in ounces) of a sample of 160 infants born in a local hospital Using the boxplot, we can infer that about 40 of the birth weights were below: 92 ounces. 103 ounces. 110 ounces. 123 ounces.

Explanation / Answer

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the following boxplot is birth weight of a sample of 160 infants born in alocal hospital
Using the boxplot we can infer that about 40 of the birth weight were below

Ans:103 ounces

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