A popular restaurant advertises that it delivers its orders within 30 minutes. Suppose the average delivery time for one store is 27 minutes with a standard deviation of three minutes. One particular order delivery has a z -score of negative 2 point 1 5 Which of the following statements is not a correct interpretation?
A basketball player averages 22 point 5 points scored per game with a standard deviation of 6 point 2 points. In one game, the number of points the athlete scored was 1 point 2 standard deviations below the mean. Which of the following is the z -score for the number of points scored?
In a certain breed of cattle, the length of gestation has a mean of 284 days and a standard deviation is 5 point 5 days. What is the z -score for a gestation period that lasts 290 days?
In a statistics class, students were asked how many siblings they have. Their responses are shown. 2 , 3 , 1 , 3 , 5 , 3 , 3 , 3 , 6 , 3 , 5 , 0 , 3 What is the z -score for the student with two siblings?
A basketball player averages 22 point 5 points scored per game with a standard deviation of 6 point 2 points. In one game, the athlete scored 10 points. What is the z -score for the points scored in this game?
On a unit test in a statistics class, the teacher determines that the mean test grade was 77 point 5 with a standard deviation of 5 point 2 One test grade has a z -score of 2 point 4 Which of the following statements gives the best interpretation of this z -score?
In a certain breed of cattle, the length of gestation has a mean of 284 days and a standard deviation is 5 point 5 days. One length of gestation had a z -score of negative 1 point 7 0 Which of the following sentences best interprets this z -score?
A sample of 10 packs of a brand of chewing gum was taken. Each pack was weighed and their weights, in grams, are shown. 43 point 0 , 43 point 7 , 49 point 6 , 46 point 9 , 47 point 6 , 45 point 4 , 51 point 2 , 48 point 0 , 40 point 5 , 49 point 1 What is the z -score for the pack of gum weighing 43 grams?
Currently, professional men’s basketball players score an average of 18 point 2 points per game with a standard deviation of 4 point 5 points. The current top-scoring professional basketball player scores an average of 36 point 2 points per game. In one season in the 1990s, professional basketball players averaged 13 point 2 points per game with a standard deviation of 3 point 7 points. The top-scoring professional basketball player averaged 30 point 1 points per game. Which player did better relative to his peers?
At age six, Kylie is 50 inches tall. Her height has a z -score of 1 point 8 At age four, Hannah is 48 inches tall. Her height has a z -score of 2 point 1 Who is taller?
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