Under the leadership of Prince Henry the Navigator, the Portuguese emerged as an early sea power. Which of these inventions contributed to Portuguese sea-faring?

John Brown’s Raid of 1859

DESMOS.COM The results of a certain medical test are normally distributed with a mean of  122 and a standard deviation of 16. Convert the given results into​ z-scores, and then use the table above to find the percentage of people with readings between 140 and 146. Round your solution to 2 decimal places.    

DESMOS.COM Find the mean for the data items in the given frequency distribution. Round solution to the hundredths place.  Score, x 1 2 3 4 5 6 7 Frequency, f 3 6 4 4 1 7 4

DESMOS.COM Fill in the blank. Find the median and mode for the data items in the given frequency distribution. Score, x 1 2 3 4 5 6 7 8 Frequency, f 5 6 1 3 3 3 2 7    The median is [median]  The mode is [mode]

The regression equation below shows the value y, of an investment (in dollars) x years after 2013. y=647.62x+1872 Interpret the slope of the equation within the context of the problem. 

UPLOAD YOUR SCRATCHWORK TO CANVAS! Failure to do so will result in a 5-point deduction in addition to other points that might be taken off of the exam. 

Do the variables below have a positive correlation, negative correlation, or no correlation?   a. Circumference of head and IQ (Intelligence Quotient) has [nocorrelation].   b. Water intake and dehydration a [negativecorrelation].

Solenoid valve

Removable connection