The Underground Railroad was a complex network of secret routes that slaves traveled to get to freedom. Along the way, there were houses known as "safe houses". They were operated by free people, abolitionists, and Quakers. Without these people, the Umderground Railroad would habe never worked and slaves wouldn't have found freedom.
The seven oh seven or aka 707 was a military plane used to transport goods and troops to any battles short distance of course because they didn't know how well the plane would do long distance til it became the first plane to carry 1,011 people across the pacific ocean and is now seen as commercial airplanes also as tanker planes. hope this helps!
Answer:
i think option B is correct
hope my answer is helpful to you
plz mark me as brainlist
The correct answer is <span>the values are measures for the sampling distribution of the mean
For example, in the </span>μm it is used to<span> represent the mean of the distribution of sample </span>means, while in the σm it is indicated that this value is a standard deviation, and just the M means that it is the standard deviation for the distribution of sample <span>means</span>
