Answer:
(b) H0: p = 0.5; Ha: p > 0.5
Step-by-step explanation:
p represents the population proportion.
A null hypothesis is a statement from the population parameter which is either rejected or accepted (fail to reject) upon testing. It is expressed using the equality sign.
An alternate hypothesis is also a statement from the population parameter which negates the null hypothesis and is accepted if the null hypothesis is rejected. It is expressed using any of the inequality signs.
Answer:

Step-by-step explanation:
Since we know -7x=y we use the substitution method and plug it in the top equation.



or x=-2/3
Then plug it back in the the bottom equation

y=14/3
3.6 / 1.2 = 3.0
and
10^8 / 10^3 = 10^5
Answer is 3.0 * 10^5
Well I'm still trying to solve the first question so I'll tell you the other answers
the answer for the second question is :

and for the third question :
Answer:
33.75
Step-by-step explanation:
45x0.75=33.75