Why do we reject the null hypothesis when the p-value is small? A p-value less than 0.05 (typically ≤ 0.05) is statistically significant. It indicates strong evidence against the null hypothesis, as there is less than a 5% probability the null is correct (and the results are random). Therefore, we reject the null hypothesis, and […]
What causes extremely hard brake pedal?
What causes extremely hard brake pedal? Vacuum – or really lack of vacuum pressure – is the most common cause of a hard brake pedal, and therefore the first thing to look at when a hard pedal is present. Any brake booster (whether from Master Power or any other supplier) needs a vacuum source to […]
Which noble gas has the smallest atomic radius?
Which noble gas has the smallest atomic radius? Helium Why do noble gasses have no electronegativity? Electronegativity is the atom’s ability to attract electrons within a bond. Since noble gases already have a full valence shell of electrons and are stable, they have no need for attracting electrons so no, they do not have electronegativity. […]
Why do farmers plow in circles around a hill instead of up and down?
Why do farmers plow in circles around a hill instead of up and down? Use contour farming on cropland to conserve water and protect soil on sloping fields. When farmers carry out their farming activities (plowing, planting, cultivating, and harvesting) across the slope instead of up and down the slope, they are using contour farming […]
What technology is on the moon?
What technology is on the moon? Other technologies like breathing apparatuses, fabric structures, communications and protective coatings that made man’s step on the Moon possible soon led to giant leaps in technology on Earth. What technology has NASA given us? Health and medicine Infrared ear thermometers. Ventricular assist device. LASIK. Cochlear implants. Artificial limbs. Light-emitting […]
Does foil insulation need an air gap?
Does foil insulation need an air gap? Radiant barrier foil has a 97% reflectivity, basically it’s only letting about 3% of that heat pass through. You MUST have an air gap in order to get either the emissivity quality or the reflectivity quality that you’re looking for, otherwise the foil will not work as a […]
Can you overcharge an e-bike battery?
Can you overcharge an e-bike battery? Ebike batteries should not be overcharged. Doing so can shorten the battery’s lifespan and can cause it to overheat, which may eventually make it unusable. We’ll also briefly look at how to properly care for your ebike’s battery. How often should I charge my ebike? Also, avoid leaving your […]
What biome is Eureka in?
What biome is Eureka in? moist forest biome What is the köppen classification for Fresno? Fresno, California has a mid-latitude steppe/ semi-arid cool climate (Köppen-Geiger classification: BSk). Does Fresno have snow? Fresno gets some kind of precipitation, on average, 48 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground….Climate […]
What is the difference between the two theories of relativity?
What is the difference between the two theories of relativity? The “General Theory of Relativity’ is related to gravity. It describes gravitational force as continuous non-spatial whole of space and time. The difference between the two theories is that the theory of general relativity throws light on the force of gravity with respect to curving […]
How did Pangea split?
How did Pangea split? Scientists believe that Pangea broke apart for the same reason that the plates are moving today. The movement is caused by the convection currents that roll over in the upper zone of the mantle. About 200 million years ago Pangaea broke into two new continents Laurasia and Gondwanaland. Which era did […]