The position of a particle moving to the right on the x x -axis is given by x(t) x ( t ) , where x(t) x ( t ) is measured in inches and t t is measured in minutes for 0≤t≤100 0 ≤ t ≤ 100 . If y=x(t) y = x ( t ) is a linear function, which of the following would most likely give the best estimate of the speed of the particle, in inches per minute, at time t=20 t = 20 minutes?

Anull hypothesis states that the difference between 8 hours of sleep and 3 hours of sleep has no effect on the number of pictures a student will remember during a picture memory interface test (pmit). examining the mit database, an extremely small t-value of 0.1611 is found. this t-value is much smaller than the smallest t-value on the chart for p-value reference. from this information we can: select one: a. accept the null hypothesis because the p-value obtained shows that the difference between the two groups being tested is not statistically significant b. accept the null hypothesis because the p-value obtained was statistically significant c. reject the null hypothesis because of the p-value obtained d. reject the null hypothesis because the data obtained is statistically significant