Write the equation of the line fully simplified slope-intercept form.
1 answer:
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Answer:
P(Y ≥ 15) = 0.763
Step-by-step explanation:
Given that:
Mean =135
standard deviation = 12
sample size n = 50
sample mean = 140
Suppose X is the random variable that follows a normal distribution which represents the weekly supermarket expenses
Then,
The probability that X is greater than 140 is :
P(X>140) = 1 - P(X ≤ 140)
From z tables,
Similarly, let consider Y to be the variable that follows a binomial distribution of the no of household whose expense is greater than $140
Then;
∴
P(Y ≥ 15) = 1- P(Y< 15)
P(Y ≥ 15) = 1 - ( P(Y=0) + P(Y=1) + P(Y=2) + ... + P(Y=14) )
P(Y ≥ 15) = 0.763
<span>To complete
the steps to demonstrate why you multiply by the reciprocal when
dividing fractions.
To find
Step 1:
Rewrite it as
.
Step 2:
Multiply the numerator and the denominator by the reciprocal of
.</span><span>
</span><span>
Step 3:
Simplify the denominator
Step 4:
Simplify the fraction
</span><span>
.
We complete the solution as follows:
</span><span><span>
</span></span>
To find
Step 1:
Rewrite it as
Step 2:
Multiply the numerator and the denominator by the reciprocal of
</span><span>
Step 3:
Simplify the denominator
Step 4:
Simplify the fraction
</span><span>
We complete the solution as follows:
</span><span><span>