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astraxan [27]
3 years ago
8

What is a way to write a number that shows the place value of each digit?

Mathematics
2 answers:
valentina_108 [34]3 years ago
7 0
Eg: 24936
Place value of 4 is 4x10 raised to the power of 3 or 4000
Sever21 [200]3 years ago
4 0
Let's take 23154

4 is in the ones place
5 in the tenth plave     50
1 in the hundredth place   100
3 in the thousandth place   3000
2 in the ten thousand place 20000
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Which of the following is NOT a requirement of testing a claim about two population means when 1 and 2 are unknown and not assum
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3 years ago
GreenBeam Ltd. claims that its compact fluorescent bulbs average no more than 3.24 mg of mercury. A sample of 25 bulbs shows a m
amm1812

Answer:

Null hypothesis:\mu \leq 3.24  

Alternative hypothesis:\mu > 3.24  

Step-by-step explanation:

1) Previous concepts  and data given

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

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A right tailed test (sometimes called an upper test) is when the alternative hypothesis statement contains a greater than (>) symbol.

\bar X=3.29 represent the sample mean  

s represent the sample standard deviation

n represent the sample selected

\alpha significance level  

State the null and alternative hypotheses.  

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Null hypothesis:\mu \leq 3.24  

Alternative hypothesis:\mu > 3.24  

IIf we know the population deviation we can apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}  (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

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