If the area to the left of a z-score is less than 0.5, the z-score must be negative.

A container of Humm! hummus weighs 9 ounces on average, according to the label, with a standard deviation of 0.12 ounces.  To prepare for a Halloween party, you purchase 8 containers of Humm! hummus with an average weight of 9.1 ounces.  How likely is it that, the average for any sample of 8 containers, company overfills their containers by 9.1 ounces or more?

The area that lies to the left of z = 1.13 is

48% of all adults meet the 2008 Physical Activity Guidelines.  In a random sample of 80 adults, find the probability that more than 60 of the adults meet the 2008 Physical Activity Guidelines.

12.9% of adults 18 yrs and up are considered infrequent drinkers.  Suppose x is a binomial random variable that counts the number of adults who are considered infrequent drinkers in a random sample of 100 adults from the community.  Which of the following is a correct interpretation of ?

If the area under the standard normal curve to the left of z = – 1.72 is 0.0427, then the area under the standard normal curve to the right of z = 1.72 is – 0.0427.

48% of all adults meet the 2008 Physical Activity Guidelines.  In a random sample of 80 adults, find the probability that exactly 50 of the adults meet the 2008 Physical Activity Guidelines.

Refer to the following table that shows the results from a survey of 1200 high school teachers when asked what his or her major was in college. What is the probability that a randomly selected teacher was male given they majored in Other?   Men Women Totals Mathematics 20 14 34 Biology 12 15 27 Business 5 4 9 Chemistry 10 10 20 Engineering 8 3 11 Education 336 382 718 Other 181 200 381 Totals 572 628  

Refer to the following table that shows the results from a survey of 1200 high school teachers when asked what his or her major was in college. What is the probability that a randomly selected teacher is female and majored in education?   Men Women Totals Mathematics 20 14 34 Biology 12 15 27 Business 5 4 9 Chemistry 10 10 20 Engineering 8 3 11 Education 336 382 718 Other 181 200 381 Totals 572 628  

Irreligious business owners opposed the Temperance movement because a happy worker is a good worker.