I WILL GIVE BRAINLIEST, PLZ ANSWER,Olivia walked 2 2/5 km in 2/3 hour while Ryan walked 4 1/2 km in 1 1/ 2 hours. Who walked fas
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There are many ways to do this depending on the property you have to use:
If you use the distributive property, you need to distribute 3/4 to -10 and 2/5. Distribute means you will multiply it so your resulting equation will be this:
Before you can add, you need to first make them like terms because you cannot add unlike fractions. Get the LCD and form your new equation:
Now you can just add them together to get:
and then simplify your fraction:
or - 
The whole fraction becomes negative because when you divide integers and of them is negative, the final answer will be negative.
If you use the distributive property, you need to distribute 3/4 to -10 and 2/5. Distribute means you will multiply it so your resulting equation will be this:
Before you can add, you need to first make them like terms because you cannot add unlike fractions. Get the LCD and form your new equation:
Now you can just add them together to get:
and then simplify your fraction:
The whole fraction becomes negative because when you divide integers and of them is negative, the final answer will be negative.
The final answer is the probability that the boat is overloaded because the mean weight of the 70 passengers is greater than 143lb is 1.0000.
A normal distribution is a continuous data distribution with a bell-shaped curve. The normally distributed random variable X has mean and standard deviation
.
In addition, the standard normal distribution represents a normal curve with a mean of zero and a standard deviation of one.
The number of standard deviations an element deviates from the mean is indicated by a standardized Z-score.
What is the theorem of the central limit?
- If the sample size from the population is sufficiently large and has a finite variance, the mean of all samples taken will be approximately the same as the population mean. And the variance would be the population variance divided by the sample size. In addition, the sampling distribution would be roughly normal.
- The formula for sampling distribution of the sample mean is
- The formula for standard deviation of the sample mean is,
- Here,
is the population standard deviation and n is the sample size.
- The formula for standard z-score is,
- From the given information,Population mean,
,Population standard deviation,
,Sample size, n=70
- Compute the probability that the boat is overloaded because the mean weight of the 70 passengers is greater than
.
To learn more about standard deviation visit:
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