in class of 40 students report that english is their favorite class 40 percent of the students report that keyboard is there fav
1 answer:
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Answer:
The slope is
Step-by-step explanation:
Take the general equation of a straight line
Here is the slope of the line.
So let's get the equation of the line in the question in the same form.
Add to both sides:
Add to both sides:
Divide by to get it into the general equation:
Now compare it to the general equation to find the value of . The value of
is the coefficient of
which we can see is
Answer:
The probability of success for this case would be:
representing the proportion of homes that are own homes
Let X the random variable of interest, on this case we now that:
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
And we want this probability:
And uing the probability mass function we got:
Step-by-step explanation:
Adduming the following info: In a list of 15 households, 9 own homes and 6 do not own homes. Five households are randomly selected from these 15 households. Find the probability that the number of households in these 5 own homes is exactly 3.
Round your answer to four decimal places
P (exactly 3)=
Previous concepts
The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".
Solution to the problem
The probability of success for this case would be:
representing the proportion of homes that are own homes
Let X the random variable of interest, on this case we now that:
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
And we want this probability:
And uing the probability mass function we got: