Raul received a score of 75 on a history test for which the class mean was 70 with a standard deviation of 8. He received a score of 80 on a biology test for which the class mean was 70 with standard deviation 5. On which test did he do better relative to the rest of the class

Raul did better in biology test relative to the rest of the class.

Step-by-step explanation:

We are given two situations;

Now, we have to find on which test did he do better relative to the rest of the class. For this we will calculate z score for both the situations;

The z score value is given by, Z = ; where, = mean

                                                                                = standard deviation

For 1st situation; z score = = 0.625

For 2nd situation; z score = = 2

So, it is clear that 2nd situation is better as it has higher z score.

Therefore, Raul did better in biology test relative to the rest of the class.

76%

step-by-step explanation:

24% are dogs and the remaining is 76% because 100-24=76

"it's not the heat, it's the humidity".   that's a partly valid phrase you may have heard in the summer, but it's actually both.   the heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature.   this has important considerations for the human body's comfort.   when the body gets too hot, it begins to perspire or sweat to cool itself off.   if the perspiration is not able to evaporate, the body cannot regulate its temperature.   evaporation is a cooling process.   when perspiration is evaporated off the body, it effectively reduces the body's temperature.   when the atmospheric moisture content (i.e. relative humidity) is high, the rate of perspiration from the body decreases.   in other words, the human body feels warmer in humid conditions.   the opposite is true when the relative humidity decreases because the rate of perspiration increases.   the body actually feels cooler in arid conditions.   there is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).

step-by-step explanation: