The mean midday temperature recorded in june in a city in south california is 36ºc, and the standard deviation is 3ºc. assuming the data is normally distributed, the number of days in june when the midday temperature was between 39ºc and 42ºc is .

mean = 36

sd = 3

P( 39 < x < 42) = P(( 39 - 36) / 3 < Z < ( 42 - 36) / 3)

P(3/3 <z<6/3)
 P( 1 < Z < 2) = P( x < 2) - P( x < 1) = 0.9772 - 0.8413 = 0.1359
(need to use the normal probability table to get the decimal numbers) 

June has 30 days

 0.1359*30 = 4.0777 days, round to 4 days

fahrenheit

step-by-step explanation:

fahrenheit is more precise than celsius. the ambient temperature on most of the inhabited world ranges from -20 degrees fahrenheit to 110 degrees fahrenheit—a 130-degree range. on the celsius scale, that range is from -28.8 degrees to 43.3 degrees—a 72.1-degree range. this means that you can get a more exact measurement of the air temperature using fahrenheit because it uses almost twice the scale.

dalila is incorrect. the whisker on the left is very long, going all the way out to 5. the whisker goes from 5 to 30, so it has a spread of 25. the rest of the box plot values are closer together, so 5 is an outlier