In a probability experiment, Karen flipped a coin 58 times. The coin landed on heads 33 times. What percentage of the coin flips
1 answer:
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Answer:
The confidence interval is
Step-by-step explanation:
From the question we are told that
The sample mean is
The standard deviation is
The sample size is
given that the confidence level is 85% then the level of significance is mathematically represented as
Next we obtain the critical value of from the normal distribution table the value is
Generally the margin of error is mathematically represented as
=>
=>
The 85% confidence interval is mathematically represented as
=>
=>
Answer:
using the pythagoras theorem the answer is a=3
Step-by-step explanation:
basically in a right angled triangle a² + b² equals c². in this equation c is the number on the hypotenuse (the line opposite the right angle)
and 4 could be a or b it doesnt make a difference so I'll call it b.
because we have c² and b² we work backwards like this:
because 9 is a², we must find the square root to find <em>a</em>
so a equals 3