A random sample of 1000 oranges showed that the mean amount of juice per orange was 7.8 fluid ounces, with a standard deviation of 1.3 fluid ounces. (a) Determine the z-score, to the nearest hundredth, of an orange that produced 6.6 fluid ounces of juice. (b) The z-score for one orange was 3.11. How much juice was produced by this orange? Round to the nearest tenth of a fluid ounce.

Solve for C)

A test involving 340 men ages 20 to 24 found that their blood cholesterol levels had a mean of 188 mg/dl and a standard deviation of 44.3 mg/dl. (a) Determine the z-score, to the nearest hundredth, for one of the men who had a blood cholesterol level of 215 mg/dl.   (b) The z-score for one man was  −1.57.  What was his blood cholesterol level? Round to the nearest hundredth.

Assume that the mean height of men in the United States is 70 inches, with a standard deviation of 3 inches.  A particular man is 80 inches tall.  Find the z-score of his height.  (Round to two decimal places.)

A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1025 h with a standard deviation of 83 h.Find the z-scores for lightbulbs which last 850 and 900 h. (Round your answers to two decimal places.) 850 h: z = 900 h: z =

The mean height of females in a certain country is 66 inches with a standard deviation of 4 inches. Find the height that correspond to a z score of 0.8. Round your answer to one decimal place, if needed.

The systolic blood pressure (given in millimeters) of males has an approximately normal distribution with mean u = 125 and standard deviation o = 18. (a) Calculate the z-scores for the male systolic blood pressures 120 and 130 millimeters. (Round your answers to two decimal places.) 120 mm z = 130 mm Z = (b) If a male friend of yours said he thought his systolic blood pressure was 2.5 standard deviations below the mean, but that he believed his blood pressure was between 120 and 130 millimeters, what would you say to him? (Enter your numerical answer to the nearest whole number.) He is ---Select- v because 2.5 standard deviations below the mean would give him a blood pressure reading of ---Select--- v the range of 120 to 130 millimeters. millimeters, which is