Answer:
<h2>x = 5</h2>Step-by-step explanation:
PLEASE HELP AM SO DESPERATE FOR HELP
1 answer:
Answer:
15. a 7.9 miles
b. NO .
Step-by-step explanation:
From the table, on
Monday = 3 2/5
Wednesday = 4 1/2
Write the distance in improper fractions as;
Monday = 17/5
Wednesday = 9/2
Find the sum as
where the L.C.M is 10
Answer is 7.9 miles
b.
Distance covered on Thursday and Saturday will be
2 2/6 + 3 3/4
14/6 + 15/4 ------the L.C.M is 12
(28+45)/12
73/12
The distance 73/12 miles for Thursday + Saturday is less than that of Monday + Wednesday 79/10 miles. The answer is NO.
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Answer:
Step-by-step explanation:
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Simplify to obtain:
Answer:
5.96% probability that exactly 3 people in the sample are afraid of being alone at night.
Step-by-step explanation:
For each person, there are only two possible outcomes. Either they are afraid of being alone at night, or they are not. The probability of a person being afraid of being alone at night is independent of any other person. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
In which is the number of different combinations of x objects from a set of n elements, given by the following formula.
And p is the probability of X happening.
5% of Americans are afraid of being alone in a house at night.
This means that
If a random sample of 20 Americans is selected, what is the probability that exactly 3 people in the sample are afraid of being alone at night.
This is P(X = 3) when n = 20. So
5.96% probability that exactly 3 people in the sample are afraid of being alone at night.