A normal curve of quiz scores, in points, is shown with a shaded central region. What percent of scores lies in the shaded region?

The figure shows a normal curve of tomato masses, in grams, with a symmetric shaded region around the mean. About what percent of tomatoes is in that region?

A normal curve of bus arrival times, in minutes after 7:00, is shown with the right tail shaded. What percent of arrivals is shaded?

The normal curve shows plant heights, in centimeters, with the left tail shaded. What percent of plants is shaded?

A normal curve of laptop battery lives, in hours, has a shaded region that begins at the mean and extends to the right. What percent of battery lives lies there?

A normal curve of running times, in seconds, has a shaded region that ends at the mean and extends to the left. What percent of running times lies there?

The figure gives a normal curve of water bottle fills, in milliliters, with the middle band shaded. What percent is shaded?

A normal curve of package masses, in kilograms, is shown with both outside tails shaded. What percent of packages is shaded?

A normal curve of test completion times, in minutes, shows a shaded region centered on the mean. About what percent of times is shaded?

The normal curve represents fish lengths, in centimeters, and the region to the left of the marked cutoff is shaded. What percent of fish lengths is shaded?

A normal curve of cereal box masses, in grams, has the region to the right of the marked cutoff shaded. What percent of boxes is shaded?

The figure shows a normal curve of backpack masses, in kilograms, with a band to the right of the mean shaded. What percent of backpack masses lies there?

A normal curve of adult pulse rates, in beats per minute, is shown with everything to the left of a marked cutoff shaded. At what percentile is that cutoff?

The normal curve shows math contest scores, in points, with everything to the left of a marked cutoff shaded. At what percentile is that cutoff?

A normal curve of seedling heights, in centimeters, has everything to the left of the marked cutoff shaded. At what percentile is that cutoff?

A normal curve of commute distances, in kilometers, has everything to the left of the marked cutoff shaded. At what percentile is that cutoff?

A normal curve of milk carton fills, in milliliters, has the area to the left of the labeled cutoff shaded. At what percentile is that cutoff?

The figure gives a normal curve of reaction times, in seconds, with everything to the left of the cutoff shaded. At what percentile is the cutoff?

A normal curve of exam scores, in points, shows everything to the left of the marked cutoff shaded. At what percentile is that cutoff?

The normal curve represents soccer sprint speeds, in meters per second, and everything to the left of a labeled cutoff is shaded. What percentile is that cutoff?

A normal curve of rainfall totals, in millimeters, is shown with everything to the left of the marked cutoff shaded. At what percentile is that cutoff?

The figure shows a normal curve of tablet screen brightness, in nits, with the area to the left of the marked cutoff shaded. What percentile is that cutoff?

The normal curve shows light bulb lifetimes, in hours. Which region holds the middle 68 percent of lifetimes?

The normal curve shows orange diameters, in centimeters. Which region holds the lowest 16 percent of diameters?

The normal curve shows delivery times, in minutes. Which region holds the middle 95 percent of delivery times?

The normal curve shows steel rod lengths, in centimeters. Which region holds the highest 2.5 percent of rod lengths?

The normal curve shows chemistry lab temperatures, in degrees Celsius. Which region holds the values within 3 standard deviations of the mean?

The normal curve shows textbook masses, in kilograms. Which region holds the middle 95 percent of textbook masses?

The normal curve shows puppy weights, in kilograms. Which region holds the weights above the 84th percentile?

The normal curve shows phone call lengths, in minutes. Which region holds the call lengths below the 2.5th percentile?

The normal curve shows apple masses, in grams. Which region holds the central 99.7 percent of apple masses?

A standard normal curve has the region between $z=-0.8$ and $z=1.3$ shaded. The left-tail areas are 0.2119 and 0.9032. What is the shaded area, to four decimals?

A standard normal curve has the region between $z=-1.2$ and $z=0.6$ shaded. The left-tail areas are 0.1151 and 0.7257. What is the shaded area, to four decimals?

A standard normal curve has the region between $z=-0.5$ and $z=1.5$ shaded. The left-tail areas are 0.3085 and 0.9332. What is the shaded area, to four decimals?

A standard normal curve has the region between $z=-2.0$ and $z=0.4$ shaded. The left-tail areas are 0.0228 and 0.6554. What is the shaded area, to four decimals?

A standard normal curve has the region between $z=0.2$ and $z=1.1$ shaded. The left-tail areas are 0.5793 and 0.8643. What is the shaded area, to four decimals?

A standard normal curve has the region between $z=-1.5$ and $z=-0.3$ shaded. The left-tail areas are 0.0668 and 0.3821. What is the shaded area, to four decimals?

A standard normal curve has the region between $z=-0.2$ and $z=2.1$ shaded. The left-tail areas are 0.4207 and 0.9821. What is the shaded area, to four decimals?

A standard normal curve has the region between $z=-1.8$ and $z=0.9$ shaded. The left-tail areas are 0.0359 and 0.8159. What is the shaded area, to four decimals?

A standard normal curve has the region between $z=-0.9$ and $z=0.9$ shaded. The left-tail areas are 0.1841 and 0.8159. What is the shaded area, to four decimals?