exam Maths Puzzle Numerical Ability

A coin was flipped 60 times and came up heads 38 times. (a) at the .10 level of significance, is the coin biased toward heards? Show your decision rule and calculations. (b) Calculate a p-value and interpret it.

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exam Other Question

16^x-4=3^3-x Sarah needs to borrow $1500 for her school tutition. She borrows the money on a six monthe short term note that charges simple interest. After 6 months, she owes $90.00 in interest. What is the simple interest rate being charged on this note?