Tony's pizza guarantees all pizza deliveries within 30 minutes of the placement of orders. an agency wants to estimate the propo
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The equation in the reduced form of the equation is .
Given that,
Equation;
We have to reduce the equation.
According to the question,
To reduce the equation means we need to subtract one equation from the other.
To determine the reduced form of the equation following all the steps given below.
Equation;
Subtraction equation 1 from equation 2,
Hence, The equation in the reduced form of the equation is .
For more details refer to the link given below.
Answer:
22.29% probability that both of them scored above a 1520
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
The first step to solve the question is find the probability that a student has of scoring above 1520, which is 1 subtracted by the pvalue of Z when X = 1520.
So
has a pvalue of 0.5279
1 - 0.5279 = 0.4721
Each students has a 0.4721 probability of scoring above 1520.
What is the probability that both of them scored above a 1520?
Each students has a 0.4721 probability of scoring above 1520. So
22.29% probability that both of them scored above a 1520