rayvingrant16
24.01.2022 •
Mathematics
Y=x+4. How to graph y=x+4 on a visual graph ? And getting 2 coordinates x and y
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Ответ:
There is a answer to the question
Ответ:
See graph.
Step-by-step explanation:
The slope is 1 and the intercept is (0,4). Plot (0,4) first then go up 1 and over 1 to get your graph. From there just look at the points plotted to get a coordinate. One point is (5,9) and another is (2,6).
Ответ:
There is a 2.28% probability that the average weight of these 64 adult males is over 205 pounds.
Step-by-step explanation:
To solve this question, we have to understand the normal probability distribution and the central limit theorem.
Normal probability distribution
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.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a random variable X, with mean and standard deviation , a large sample size can be approximated to a normal distribution with mean and standard deviation
In this problem, we have that:
What is the probability that the average weight of these 64 adult males is over 205 pounds?
This is 1 subtracted by the pvalue of Z when X = 205.
So
has a pvalue of 0.9772
1 - 0.9772 = 0.0228
There is a 2.28% probability that the average weight of these 64 adult males is over 205 pounds.