The ratio of neon fish to all the fish in the aquarium is 3 : 4 .
In the question ,
it is given that
in Mrs. Jone's class room there are angel fish and neon fish
number of angel fish in the aquarium = 14 fish
number of neon fish in the aquarium is = 42 fish
So, the total number of fish in the aquarium = number of angel fish + number neon fish
total number of fish = 14 + 42
= 56
the ratio of neon fish to all the fish in the aquarium is
= number of neon fish : total number of fish
= 42 : 56
since the ratio is written in simplest form ,
we get
= 6 : 8
= 3 : 4
Therefore , The ratio of neon fish to all the fish in the aquarium is 3 : 4 .
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Answer:
Step-by-step explanation:
Given
Required
This is calculated as:
So, we have:
Expand
Factorize
Factor out x + 2
Cancel out x + 2
Answer:
Claim is False that the incidence of fatigue is greater among those who use Clarinex.
Step-by-step explanation:
Let and be the probabilities of the the incidence of fatigue of those using Clarinex. and placebos respectively
2% of the 1650 treated subjects experienced fatigue who are using Drug Clarinex.
= 1650
Among the 1600 subjects given placebos, 1% experienced fatigue.
= 1600
Claim : The incidence of fatigue is greater among those who use Clarinex.
We will use Comparing Two Proportions
Formula of test statistic :
Substitute the values
test statistic :
test statistic :2.344
refer z table for p value
p value = 0.9904
α = 0.05
Since p value >α
So, we accept the null hypothesis
So, the claim is wrong that the incidence of fatigue is greater among those who use Clarinex.
Answer:
2x/5
Step-by-step explanation: