Answer:
The value of the test statistic z for this hypothesis test is -2.79
Step-by-step explanation:
Consider the provided information.
To calculate the test statistic use the formula:
Where, z is Test statistics, n is Sample size, p₀ = Null hypothesized value and 
= Observed proportion.
p₀ = 0.50
Thus 1-p₀= 0.50
42% responded that if they had a cell phone, thus 
The sample size is 305.
Substitute the respective values in the above formula.
Hence, the value of the test statistic z for this hypothesis test is -2.79
Answer:
Step-by-step explanation:
Hope this helps u !!
Answer:
Step-by-step explanation:
Hard to say what your draw down menus will offer.
I would guess "...function will be reduced by a factor of 0.8"
or maybe flattened 20%
Answer:
Infinitely many
Step-by-step explanation:
for example,
a triangle of 1 - 1 - 
is 45 - 45 - 90 based on the 45-45-90 triangle theorem
if I multiply the three side lengths listed above by the same number, I will still have a 45 -45 -90 because of the definition of similar triangles
