Upload a file with your answers to this question. Your upload MUST be ONE FILE. 1) (1 point)
In a normal distribution, what proportion of scores fall between z= -1.25 and z= 2.75. (Sketch the
distribution to show your work).
2) (1 point)
Intelligence quotient (IQ) scores are normally distributed with a mean of 100 and a standard
deviation of 15. If everyone I meet claims that their IQ is above 145, should I feel skeptical about the
likelihood that most people have IQs at this level?
Explain your answer by drawing the sketch and describing the proportion of people with IQs
above 145.
3) (1 point)
In her math class, Kim received a 75 on her test (mean for the class was 80 and standard deviation
was 3). Her friend Pat took a test on the same day in her english class and earned a 60 (mean for the
class was 55 and standard deviation was 2). Kim is bragging that she did better relative to her
classmates than Pat because her score was higher. Is she correct?
Explain your answer by providing sketches and z-scores.

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

At 40 âc the solution has at 40 â c the solution has blank g of k n o 3 per 100 g of water and it can contain up to blank g of k n o 3 per 100 g of water. at 0 â c the solubility is ~ blank g k n o 3 per 100 g of water, so ~ blank g k n o 3 per 100 g of water will precipitate out of solution.g of kno3 per 100 g of water and it can contain up to at 40 â c the solution has blank g of k n o 3 per 100 g of water and it can contain up to blank g of k n o 3 per 100 g of water. at 0 â c the solubility is ~ blank g k n o 3 per 100 g of water, so ~ blank g k n o 3 per 100 g of water will precipitate out of solution.g of kno3 per 100 g of water. at 0 âc the solubility is ~ at 40 â c the solution has blank g of k n o 3 per 100 g of water and it can contain up to blank g of k n o 3 per 100 g of water. at 0 â c the solubility is ~ blank g k n o 3 per 100 g of water, so ~ blank g k n o 3 per 100 g of water will precipitate out of solution.kno3 per 100 g of water, so ~ at 40 â c the solution has blank g of k n o 3 per 100 g of water and it can contain up to blank g of k n o 3 per 100 g of water. at 0 â c the solubility is ~ blank g k n o 3 per 100 g of water, so ~ blank g k n o 3 per 100 g of water will precipitate out of solution.gkno3 per 100 g of water will precipitate out of solution. a kno3 solution containing 55 g of kno3 per 100.0 g of water is cooled from 40 ∘c to 0 ∘c. what will happen during cooling?

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer