A grapefruit has a w
eight on Earth of 4.9 N. What is the grapefruit’s mass

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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

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest