The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per minute and a standard deviation of 24 words per minute. what is the probability that a randomly selected sixth-grade student reads less than 100 words per minute?

0.148783124

Step-by-step explanation:

the probability that a randomly selected sixth-grade student reads less than 100 words per minute

P(X < 100)

= P(z < (100 - 125)/24))

= P(z < -1.0417)                                (from the z-table)

= 0.148783124

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step-by-step explanation:

question: use the following table of a school bus during morning pickups to calculate its average speed between 2.8 km and 4.2 km

answer: 42 km/h

explanation: 1.4/0.033 42.42424 = 42 km/h

question answered by

(jacemorris04)