One study, based on responses from 1,017 randomly selected teenagers, concluded that 39% of teenagers cite grades as their great
1 answer:
Answer:
The hypothesis formulae will be
H0 : p = 0.5
Ha : p < 0.5
we will reject H0.
Step-by-step explanation:
Number of responses ( n ) = 1017
percentage( p ) = 39% = 0.39
significance level ( ∝ ) = 0.05
P0 = 50% = 0.5
<u>Test the claim that fewer than half of all teenagers feel the pressure </u>
The hypothesis formulae will be
H0 : p = 0.5
Ha : p < 0.5
Perform the test statistic
Test statistic ( Z ) = -6.957
P-value < 0.05 we will reject H0.
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Your sums start at , so in order to apply these formulas directly, you need to compensate for the missing first two terms:
Answer:
$1.40 more
Step-by-step explanation:
Let's say:
A costs $z
and
B costs $y
A is more expensive than B. That means z is greater than y. When we will be asked to find HOW MUCH MORE A costs than B, we will have to subtract the smaller dollar value (which is y) FROM the larger dollar value (which is z).
So, we would say A costs more than B by ($z - $y).
Similarly, in this problem, see attached image, the HAM AND CHEESE costs MORE ($4.95) than the CHEESE ONLY ($3.55). How much more??
To find this, we subtract smaller value (3.55) from the larger value (4.95). Thus we have:
Ham and cheese omelet costs $1.40 more than cheese omelet.
