Crossett Trucking Company claims that the mean weight of its delivery trucks whe

Question

Crossett Trucking Company claims that the mean weight of its delivery trucks when they are fully loaded is 6,526 pounds and the standard deviation is 102 pounds. Assume that the population follows the normal distribution. Forty eight trucks are randomly selected and weighed. Within what limits will 95% of the sample means occur? (Round your answers to the nearest whole number.)

Crossett Trucking Company claims that the mean weight of its delivery trucks when they are fully loaded is 6,526 pounds and the standard deviation is 102 pounds. Assume that the population follows the normal distribution. Forty eight trucks are randomly selected and weighed. Within what limits will 95% of the sample means occur? (Round your answers to the nearest whole number.)

Explanation / Answer

alpha / 2 = 0.025 z = 1.96

6526 +/- 1.96 * 102 / srqt (48)

6526 +/- 28.856

6497.144 < miu < 6554.856

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