The following data represent the muzzle velocity (in feet per second) of rounds fired from a 155-mm gun. For each round, two measurements of the velocity were recorded using two different measuring devices, resulting in the following data. Complete parts (a) through (d) below. Observation 1 2 3 4 5 6 A 792.6 792.8 791.1 791.9 790.8 790.5 B 796.7 790.5 793.9 790.6 799.7 789.7 (a) Why are these matched-pairs data? A. The same round was fired in every trial. B. All the measurements came from rounds fired from the same gun. C. The measurements (A and B) are taken by the same instrument. D. Two measurements (A and B) are taken on the same round. Your answer is correct. (b) Is there a difference in the measurement of the muzzle velocity between device A and device B at the α=0.01 level of significance? Note: A normal probability plot and boxplot of the data indicate that the differences are approximately normally distributed with no outliers. Let di=Ai−Bi. Identify the null and alternative hypotheses. H0: μd ▼ nothing H1: μd ▼ nothing

The following data represent the muzzle velocity (in feet per second) of rounds fired from a 155-mm gun. For each round, two measurements of the velocity were recorded using two different...

The following data represent the muzzle velocity (in feet per second) of rounds fired from a 155-mm gun. For each round, two measurements of the velocity were recorded using two different measuring devices, resulting in the following data. Complete parts (a) through (d) below.

Observation	1	2	3	4	5	6
A	792.6	792.8	791.1	791.9	790.8	790.5
B	796.7	790.5	793.9	790.6	799.7	789.7

(a) Why are these matched-pairs data?

The same round was fired in every trial.

All the measurements came from rounds fired from the same gun.

The measurements (A and B) are taken by the same instrument.

Two measurements (A and B) are taken on the same round.

Your answer is correct.

(b) Is there a difference in the measurement of the muzzle velocity between device A and device B at the

α=0.01

level of significance? Note: A normal probability plot and boxplot of the data indicate that the differences are approximately normally distributed with no outliers.

Let

di=Ai−Bi.

Identify the null and alternative hypotheses.

H0:

μd

▼

nothing

H1:

μd

▼

nothing

Jun 02, 2022

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The following data represent the muzzle velocity (in feet per second) of rounds fired from a 155-mm gun. For each round, two measurements of the velocity were recorded using two different...

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The following data represent the muzzle velocity​ (in feet per​ second) of rounds fired from a​ 155-mm gun. For each​ round, two measurements of the velocity were recorded using two different...

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The following data represent the muzzle velocity (in feet per second) of rounds fired from a 155-mm gun. For each round, two measurements of the velocity were recorded using two different...