Aspacecraft is flying toward the moon. the moonís gravitational pull on the spacecraft will

a.
increase

b.
decrease

c.
remain the same

d.
repel the spacecraft

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error