At lawson middle school mr. hernandez as 90 randomly selected students from each grade level for their favorite subject and 28 chose social studies as their favorite he use this data to draw the inference that out of 250 middle school students about 20% prefer social studies did he make a reasonable inference

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation