A supposed "lucky coin" is to be tested to see if it is unfair, that is, the proportion of "heads" results is not 50%. It is flipped 100 times and found to land on heads only 41 times. Test the claim that the coin is unfair.

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits